10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

 (Mark One)

☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2016

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ____________ to ____________

Commission file number: 000-26427

Stamps.com Inc.

(Exact name of registrant as specified in its charter)

Delaware	77-0454966
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

1990 E. Grand Avenue

El Segundo, California 90245

(Address of principal executive offices, including zip code)

(310) 482-5800

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☑   No ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes ☑   No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b‑2 of the Exchange Act. (Check one):

Large accelerated filer  ☑	Accelerated filer  ☐
Non-accelerated filer  ☐ (Do not check if a smaller reporting company)	Smaller reporting company  ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐   No ☑

· As of October 31, 2016, there were 17,052,401 shares of the Registrant’s Common Stock issued and outstanding.

STAMPS.COM INC. AND SUBSIDIARIES

FORM 10-Q QUARTERLY REPORT FOR THE QUARTER ENDED SEPTEMBER 30, 2016

TABLE OF CONTENTS

			Page
PART I - FINANCIAL INFORMATION			1
	ITEM 1.	FINANCIAL STATEMENTS	1
	ITEM 2.	MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	24
	ITEM 3.	QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	37
	ITEM 4.	CONTROLS AND PROCEDURES	37
PART II – OTHER INFORMATION			38
	ITEM 1.	LEGAL PROCEEDINGS	38
	ITEM 1A.	RISK FACTORS	38
	ITEM 2.	UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS	38
	ITEM 3.	DEFAULTS UPON SENIOR SECURITIES	38
	ITEM 4.	MINE SAFETY DISCLOSURES	38
	ITEM 5.	OTHER INFORMATION	39
	ITEM 6.	EXHIBITS	39

PART I - FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

STAMPS.COM INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(In thousands, except per share data)

	September 30, 2016			December 31, 2015
	(unaudited)
Assets
Current assets:
Cash and cash equivalents	$	81,144		$	65,126
Short-term investments		3,029			8,553
Accounts receivable, net		60,089			55,052
Other current assets		9,595			8,345
Total current assets		153,857			137,076
Property and equipment, net		32,032			31,707
Goodwill		239,532			197,807
Intangible assets, net		101,046			95,950
Long-term investments		—			1,529
Deferred income taxes, net.		38,841			57,224
Other assets		7,829			7,321
Total assets	$	573,137		$	528,614
Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable and accrued expenses	$	70,710		$	60,816
Deferred revenue		6,175			4,000
Current portion of debt, net of debt issuance costs		5,814			4,267
Contingent consideration		—			63,209
Total current liabilities		82,699			132,292
Long-term debt, net of debt issuance costs		142,993			157,353
Total liabilities		225,692			289,645
Commitments and contingencies
Stockholders’ equity:
Common stock, $.001 par value per share
Authorized shares: 47,500 in 2016 and 2015
Issued shares: 30,425 in 2016 and 29,463 in 2015
Outstanding shares: 17,131in 2016 and 16,697 in 2015		53			52
Additional paid-in capital		825,941			716,253
Treasury stock, at cost, 13,294 shares in 2016 and 12,766 in 2015		(219,821	)		(172,410	)
Accumulated deficit		(258,743	)		(304,944	)
Accumulated other comprehensive income		15			18
Total stockholders’ equity		347,445			238,969
Total liabilities and stockholders’ equity	$	573,137		$	528,614

The accompanying notes are an integral part of these consolidated financial statements.

1

STAMPS.COM INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share data)

(Unaudited)

	Three Months Ended September 30,					Nine Months Ended September 30,
	2016			2015		2016			2015
Revenues:
Service	$	78,871		$	42,470	$	220,567		$	118,497
Product		4,703			4,193		15,109			13,206
Insurance		4,050			2,513		12,643			7,806
Customized postage		4,912			2,484		10,016			4,545
Other		23			9		74			27
Total revenues		92,559			51,669		258,409			144,081
Cost of revenues (exclusive of amortization of intangible assets, which is included in general and administrative expense):
Service		9,903			6,809		28,054			19,775
Product		1,579			1,364		5,019			4,400
Insurance		1,291			896		3,920			2,746
Customized postage		3,954			2,120		8,076			3,831
Total cost of revenues		16,727			11,189		45,069			30,752
Gross profit		75,832			40,480		213,340			113,329
Operating expenses:
Sales and marketing		18,229			11,341		59,708			37,898
Research and development		9,111			4,758		25,579			13,720
General and administrative		16,901			9,470		49,276			30,004
Contingent consideration charges		—			1,920		—			26,027
Litigation settlement		—			—		—			10,000
Total operating expenses		44,241			27,489		134,563			117,649
Income (loss) from operations		31,591			12,991		78,777			(4,320	)
Interest expense		(828	)		—		(2,648	)		—
Interest and other income (loss), net		24			48		98			103
Income (loss) before income taxes		30,787			13,039		76,227			(4,217	)
Income tax expense (benefit)		12,115			5,765		30,026			(90	)
Net income (loss)	$	18,672		$	7,274	$	46,201		$	(4,127	)
Net income (loss) per share
Basic	$	1.08		$	0.44	$	2.67		$	(0.25	)
Diluted	$	1.03		$	0.42	$	2.52		$	(0.25	)
Weighted average shares outstanding
Basic		17,218			16,538		17,319			16,367
Diluted		18,120			17,517		18,325			16,367	(1)

⁽¹⁾ Common equivalent shares are excluded from the diluted loss per share calculation as their effect is anti-dilutive.

The accompanying notes are an integral part of these consolidated financial statements.

2

STAMPS.COM INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(In thousands)

(Unaudited)

	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
Net income (loss)	$	18,672		$	7,274		$	46,201		$	(4,127	)
Other comprehensive loss, net of tax:
Unrealized loss on investments		(7	)		(1	)		(3	)		(15	)
Comprehensive income (loss)	$	18,665		$	7, 273		$	46,198		$	(4,142	)

The accompanying notes are an integral part of these consolidated financial statements.

3

STAMPS.COM INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

(Unaudited)

	Nine Months Ended September 30,
	2016			2015
Operating activities:
Net income (loss)	$	46,201		$	(4,127	)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization		13,922			5,169
Stock-based compensation expense		24,755			9,104
Deferred income tax expense (benefit)		26,724			(872	)
Stock option windfall tax benefit		(9,771	)		—
Accretion of debt issuance costs		279			—
Contingent consideration		—			26,027
Changes in operating assets and liabilities, net of assets and liabilities acquired:
Accounts receivable		(3,843	)		(2,970	)
Other current assets		(1,275	)		(1,934	)
Other assets		(508	)		(767	)
Deferred revenue		2,122			162
Accounts payable and accrued expenses		5,350			5,171
Net cash provided by operating activities		103,956			34,963
Investing activities:
Sale of short-term investments		6,988			3,918
Purchase of short-term investments		—			(977	)
Sale of long-term investments		77			1,064
Purchase of long-term investments		(15	)		—
Acquisition of Endicia		(573	)		—
Acquisition of ShippingEasy, net of cash acquired		(55,447	)		—
Acquisition of property and equipment		(2,903	)		(1,652	)
Net cash (used in) provided by investing activities		(51,873	)		2,353
Financing activities:
Proceeds from short term financing obligation, net of repayments		2,713			1,815
Principal payments on term loan		(3,092	)		—
Payment on revolving credit facility		(10,000	)		—
Proceeds from exercise of stock options		9,773			7,940
Issuance of common stock under Employee Stock Purchase Plan		2,181			1,555
Repurchase of common stock		(47,411	)		—
Stock option windfall tax benefit		9,771			—
Net cash (used in) provided by financing activities		(36,065	)		11,310
Net increase in cash and cash equivalents		16,018			48,626
Cash and cash equivalents at beginning of period		65,126			40,933
Cash and cash equivalents at end of period	$	81,144		$	89,559
Supplemental Information:
Capital expenditures accrued but not paid at period end	$	122		$	6
Tenant improvement allowance	$	676		$	—
Income taxes paid	$	2,723		$	835
Issuance of 2015 and 2014 earn-out shares (see Note -2 “Acquisitions”)	$	63,209		$	9,225
Non cash adjustment of purchase price for Endicia acquisition	$	372		$	—

The accompanying notes are an integral part of these consolidated financial statements.

4

STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

1. Summary of Significant Accounting Policies

Basis of Presentation

We prepared the consolidated financial statements included herein pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with United States (“U.S.”) generally accepted accounting principles (“GAAP”) have been condensed or omitted pursuant to such rules and regulations. We believe that the disclosures are adequate to make the information presented not misleading. We recommend that these financial statements be read in conjunction with the audited financial statements and the notes thereto included in our latest annual report on Form 10-K for the fiscal year ended December 31, 2015, filed with the SEC on February 29, 2016.

In our opinion, these unaudited financial statements contain all adjustments (consisting of normal recurring adjustments) necessary to present fairly our financial position as of September 30, 2016, our results of operations for the three and nine months ended September 30, 2016 and our cash flows for the nine months ended September 30, 2016.  The results of operations for the interim period are not necessarily indicative of the results that may be expected for the year ending December 31, 2016.

Principles of Consolidation

The consolidated financial statements include the accounts of Stamps.com Inc., Auctane LLC, Interapptive, Inc., PSI Systems Inc., ShippingEasy Group, Inc., and PhotoStamps Inc.  In June 2014, we completed our acquisition of 100% of the outstanding equity of Auctane LLC, the Texas limited liability company that operates ShipStation (“Auctane LLC” or “ShipStation”) in a cash and contingent stock transaction.  ShipStation, based in Austin, Texas, offers monthly subscription based e-commerce shipping software primarily under the brands ShipStation and Auctane.  In August 2014, we completed our acquisition of 100% of the outstanding equity of Interapptive, Inc., a Missouri corporation, that operates ShipWorks (“Interapptive, Inc.” or “ShipWorks”) in a cash transaction.  ShipWorks, based in St. Louis, Missouri, offers monthly subscription based e-commerce shipping software.  In November 2015, we completed our acquisition of 100% of the outstanding shares of PSI Systems, Inc. (“Endicia”).  Endicia, based in Palo Alto, California, is a leading provider of high volume shipping technologies and solutions for shipping with the United States Postal Service (“USPS”). In July 2016, we completed our acquisition of 100% of the outstanding shares of ShippingEasy Group, Inc. (“ShippingEasy”).  ShippingEasy, based in Austin, Texas, offers web-based multi-carrier shipping software that allows online retailers and e-commerce merchants to organize, process, fulfill and ship their orders quickly and easily. See Note 2– “Acquisitions” for further discussion of our acquisitions.

Because 100% of the voting control of Auctane LLC, Interapptive, Inc. PSI Systems, Inc., and ShippingEasy Group, Inc. is held by us, we have consolidated ShipStation, ShipWorks, Endicia and ShippingEasy from the date we obtained control in the accompanying consolidated financial statements. Similarly, due to our 100% control of PhotoStamps, Inc., PhotoStamps Inc. is also consolidated in the accompanying consolidated financial statements from the date of its inception. All significant intercompany accounts and transactions have been eliminated.

Use of Estimates and Risk Management

The preparation of financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the amounts reported in the financial statements and the accompanying notes.  Actual results could differ from those estimates, and such differences may be material to the financial statements. Examples include estimates of loss contingencies, promotional coupon redemptions, the number of PhotoStamps retail boxes that will not be redeemed, realizability of deferred income taxes, the estimates and assumptions used to calculate stock-based compensation, the estimates and assumptions used to calculate the allocation of the purchase price related to our acquisitions, including related contingent consideration, and estimates regarding the useful lives of our building, patents and other amortizable intangible assets, and goodwill.

5

STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Contingencies and Litigation

We are subject to various routine litigation matters as a claimant and a defendant. We record any amounts recovered in these matters when received. We establish loss provisions for claims against us when the loss is both probable and can be reasonably estimated.  If either or both of the criteria are not met, we assess whether there is at least a reasonable possibility that a loss, or additional losses, may have been incurred. If there is a reasonable possibility that a loss or additional loss may have been incurred for such proceedings, we disclose the estimate of the amount of loss or possible range of loss, or disclose that an estimate of loss cannot be made, as applicable.

Fair Value of Financial Instruments

Carrying amounts of certain of our financial instruments, including cash, cash equivalents, accounts receivable and accounts payable, approximate fair value due to their short maturities. The fair values of investments are determined using quoted market prices for those securities or similar financial instruments.  The fair value of our debt approximates book value.

In 2015 the fair value of the contingent consideration related to our acquisition of ShipStation was determined based on a probability weighted method, which incorporated management’s forecasts of financial measures related to ShipStation and the likelihood of the financial measure targets related to such acquisition being achieved using a series of options that replicated the pay-off structure of the earn-out, and the value of each of these options was determined using the Black-Scholes-Merton option pricing framework.  Changes in the fair value of the contingent consideration obligations resulted from changes in the assumed timing and amount of revenue and expense estimates, changes in the probability of payment scenarios, changes in stock values, as well as changes in capital market conditions, which impacted the discount rate used in the fair valuation. Significant judgment was employed in determining the appropriateness of these assumptions as of the acquisition date and for each subsequent reporting period during 2015. See Note 2 – “Acquisitions” for a further description of the contingent consideration relating to ShipStation.

Property and Equipment

We account for property and equipment at cost less accumulated depreciation and amortization. We compute depreciation using the straight-line method over the estimated useful life of the asset, generally three to five years for furniture, fixtures and equipment and ten to forty years for building and building improvements. We have a policy of capitalizing expenditures that materially increase assets’ useful lives and charging ordinary maintenance and repairs to operations as incurred. When property or equipment is disposed of, the cost and related accumulated depreciation and amortization are removed, and any gain or loss is included in operations.

Business Combinations

The acquisition method of accounting is used for business combinations. The results of operations of acquired businesses are included in our consolidated financial statements prospectively from the date of acquisition. The fair value of purchase consideration is allocated to the assets acquired and liabilities assumed from the acquired entity and is generally based on their fair value at the acquisition date. The excess of the fair value of purchase consideration over the fair value of the assets acquired and liabilities assumed is recorded as goodwill. Historically the primary items that have generated goodwill include anticipated synergies between the acquired business and the Company and the acquired assembled workforce, neither of which qualifies for recognition as an intangible asset. Acquisition-related expenses are recognized in our consolidated financial statements as incurred.

Goodwill

Goodwill represents the excess of the fair value of consideration given over the fair value of the tangible assets, identifiable intangible assets and liabilities assumed in a business combination.  We are required to test goodwill for impairment annually and whenever events or circumstances indicate the fair value of a reporting unit may be below its carrying value.  Goodwill is reviewed for impairment annually on October 1. A reporting unit is the operating segment or a business that is one level below that operating segment. Reporting units are aggregated as a single reporting unit if they have similar economic characteristics. As of September 30, 2016, we are not aware of any indicators of impairment that would require an impairment analysis other than our annual impairment analysis.

6

STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Trademarks, Patents and Intangible Assets

Acquired trademarks, patents and other intangibles include both amortizable and non-amortizable assets and are included in intangible assets, net in the accompanying consolidated balance sheets. Intangible assets are carried at cost less accumulated amortization. Cost associated with internally developed intangible assets is typically expensed as incurred as research and development costs.  Amortization of amortizable intangible assets is calculated on a straight-line basis, which is consistent with expected future cash flows.

Impairment of Long-Lived Assets and Intangible Assets

Long-lived assets including intangible assets with finite useful lives are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to future net cash flows expected to be generated by the asset.  If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets.  Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell.

Intangible assets that have indefinite useful lives are not amortized but, instead, tested at least annually for impairment while intangible assets that have finite useful lives continue to be amortized over their respective useful lives.

Deferred Revenue

Our deferred revenue relates mainly to service revenue and PhotoStamps retail boxes.  Deferred revenue related to our service revenue generally arises due to the timing of payment versus the provision of services for certain customers billed in advance.  We previously sold PhotoStamps retail boxes to our customers through our website and selected third parties.  Proceeds from the sale of our PhotoStamps retail boxes were initially recorded as a liability when received. We recorded the liability for outstanding PhotoStamps retail boxes in deferred revenue. We no longer sell PhotoStamps retail boxes.

Revenue Recognition

We recognize revenue from product sales or services rendered, as well as commissions from advertising or sale of products by third party vendors to our customer base when the following four revenue recognition criteria are met: persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the selling price is fixed or determinable, and collectability is reasonably assured.

Service revenue is primarily derived from monthly service fees and transaction related revenues from our USPS mailing and shipping services, our multi-carrier shipping services and our mailing and shipping integrations, and is recognized in the period that services are provided. Product sales, net of return allowances, are recorded when the products are shipped and title passes to customers. Sales of items, including customized postage, sold to customers are made pursuant to a sales contract that provides for transfer of both title and risk of loss upon our delivery to the carrier. Return allowances for expected product returns, which reduce product revenue, are estimated using historical experience. Commissions from the advertising or sale of products by a third party vendor to our customer base are recognized when the revenue is earned and collection is deemed probable.

Customers purchase postage through our mailing and shipping solutions.  If the postage purchase funds are transferred directly from the customers to the USPS, we do not recognize revenue for this postage, as it is purchased by our customers directly from the USPS.

Customized postage revenue, which includes the face value of postage, from the sale of PhotoStamps and PictureItPostage sheets and rolls is made pursuant to a sales contract that provides for transfer of both title and risk of loss upon our delivery to the carrier and revenue is recognized at that time. Sale of PhotoStamps retail boxes are initially recorded as deferred revenue.  PhotoStamps revenue related to the sale of these PhotoStamps retail boxes is subsequently recognized when either: 1) the PhotoStamps retail box is redeemed; or 2) the likelihood of the PhotoStamps retail box being redeemed is deemed remote (“breakage”) and there is no legal obligation to remit the value of the unredeemed PhotoStamps retail boxes.

7

STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

On a limited basis, we allow third parties to offer products and promotions to our customer base. These arrangements generally provide payment in the form of a flat fee or revenue sharing arrangements where we receive payment upon customers accessing third party products and services. During the three and nine months ended September 30, 2016 and 2015 revenue from such advertising arrangements was not significant.

We provide our customers with the opportunity to purchase parcel insurance directly through our solutions. Insurance revenue represents the gross amount charged to the customer for purchasing insurance and the related cost represents the amount paid to our insurance brokers. We recognize revenue on insurance purchases upon the ship date of the insured package.

PhotoStamps Retail Boxes

We previously sold PhotoStamps retail boxes that are redeemable for PhotoStamps on our website.  The PhotoStamps retail boxes were sold through various third party retail partners. We no longer sell PhotoStamps retail boxes. Our PhotoStamps retail boxes are not subject to administrative fees on unredeemed boxes and have no expiration date.  PhotoStamps retail box sales were recorded as deferred revenue.  We concluded that sufficient company-specific historical evidence existed to determine the period of time after which the likelihood of the PhotoStamps retail boxes being redeemed was remote.  Based on our analysis of the redemption data, we estimate that period of time to be 60 months after the sale of our PhotoStamps retail boxes.

We recognize breakage revenue related to our PhotoStamps retail boxes utilizing the redemption recognition method. Under the redemption recognition method, we recognize breakage revenue from unredeemed retail boxes in proportion to the revenue recognized from the retail boxes that have been redeemed.  Revenue from our PhotoStamps retail boxes is included in Customized postage revenue. PhotoStamps retail box breakage revenue was not significant during the three and nine months ended September 30, 2016 and 2015.

Income Taxes

We account for income taxes in accordance with Financial Accounting Standards Board (“FASB”) ASC Topic No. 740, Income Taxes (“ASC 740”), which requires that deferred tax assets and liabilities be recognized using enacted tax rates for the effect of temporary differences between the book and tax basis of recorded assets and liabilities. ASC 740 also requires that deferred tax assets be reduced by a valuation allowance if it is more likely than not that some or all of the net deferred tax assets will not be realized. We record a valuation allowance to reduce our gross deferred tax assets, which are primarily comprised of U.S. Federal and State tax loss carry-forwards, to the amount that is more likely than not (a likelihood of more than 50 percent) to be realized.  In order for us to realize our deferred tax assets, we must be able to generate sufficient taxable income. We evaluate the appropriateness of our deferred tax assets and related valuation allowance in accordance with ASC 740 based on all available positive and negative evidence. As of September 30, 2016 and December 31, 2015 we do not have any valuation allowance recorded to reduce our gross deferred tax assets as we believe we have met the more likely than not threshold and we will realize our tax loss carry-forwards in the foreseeable future.

Short-Term Financing Obligation

We utilize short-term financing, which is separate from our debt, to fund certain company operations.  Short-term financing is included in accrued expenses.  As of September 30, 2016 we had $16 million in short-term financing obligations and $120 million of unused credit.  As of December 31, 2015 we had $13.3 million in short-term financing obligations and $34.2 million of unused credit.

8

STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Recent Accounting Pronouncements

In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers ("ASU 2014-09") an updated standard on revenue recognition. This ASU will supersede the revenue recognition requirements in Accounting Standards Codification Topic 605, Revenue Recognition, and most industry-specific guidance.  ASU 2014-09 provides enhancements to the quality and consistency of how revenue is reported while also improving comparability in the financial statements of companies reporting using US GAAP and International Financial Reporting Standards.  The core principle of the new standard is for companies to recognize revenue to depict the transfer of goods or services to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so the companies may be required to use more judgment and make more estimates than under current authoritative guidance. ASU 2014-09 will be effective for the Company in the first quarter of fiscal 2018 and may be applied on a full retrospective or modified retrospective approach. The Company is currently evaluating the impact the adoption of this standard will have on its consolidated financial statements.

In April 2015, the FASB issued guidance to help entities evaluate whether fees paid in a cloud computing arrangement include a software license. Pursuant to this guidance, when a cloud computing arrangement includes a software license, the customer accounts for the software license element of the arrangement consistent with the acquisition of other software licenses. When a cloud computing arrangement does not include a software license element, the customer accounts for the arrangement as a service contract. The prospective adoption of this guidance on January 1, 2016 did not have a material effect on the Consolidated Financial Statements.

In November 2015, the FASB issued guidance that requires deferred tax assets and liabilities to be presented as noncurrent in a classified statement of financial position. The guidance is effective beginning January 1, 2017, with early adoption permitted. The guidance can be applied prospectively or retrospectively. The Company elected to early adopt the requirements and apply them retrospectively as of December 31, 2015.

In February 2016, the FASB issued a new accounting standard for leases. The new standard generally requires the recognition of financing and operating lease liabilities and corresponding right-of-use assets on the balance sheet. For financing leases, a lessee recognizes amortization of the right-of-use asset as an operating expense over the lease term separately from interest on the lease liability. For operating leases, a lessee recognizes its total lease expense as an operating expense over the lease term. The amendments are effective for the Company in the first quarter of 2019 using a modified retrospective approach with early adoption permitted. The Company is currently evaluating the impact the adoption of this standard will have on its consolidated financial statements.

In March 2016, the FASB simplified certain areas of accounting for stock-based compensation, including accounting for the income tax consequences of stock-based compensation, determining the classification of awards as either equity or liabilities, classifying certain items within the statement of cash flows and introducing an accounting policy election to account for forfeitures of non-vested awards as they occur. The simplified guidance is effective for the Company in the first quarter of 2017. Depending on the area simplified, the guidance is effective either prospectively, retrospectively or using a modified retrospective approach. Early adoption is permitted. The Company is evaluating the effect of adoption on its Consolidated Financial Statements.

Subsequent Events

We are not aware of any material subsequent events or transactions that have occurred that would require recognition in the financial statements or disclosure in the notes to the financial statements.

9

STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

2. Acquisitions

We have accounted for all of our acquisitions under the acquisition method of accounting in accordance with the provisions of FASB ASC Topic No. 805 Business Combinations (“ASC 805”).

ShippingEasy Acquisition

On July 1, 2016, we completed our acquisition of ShippingEasy Group, Inc. (“ShippingEasy”) when our wholly owned subsidiary was merged with and into ShippingEasy, resulting in our 100% ownership of ShippingEasy.  The merger agreement provided for us to pay $55.0 million in aggregate merger consideration to the former owners of ShippingEasy, payable in cash. The purchase price was subject to adjustments for changes in ShippingEasy’s net working capital.  The net purchase price including adjustments for net working capital totaled approximately $55.4 million and was funded from current cash and investment balances.

In connection with the acquisition, we issued performance based inducement equity awards to each of the General Manager and Chief Technology Officer of ShippingEasy. These inducement awards cover an aggregate of up to 43,567 common shares each if earnings targets for ShippingEasy are achieved over a two and one-half year period beginning July 1, 2016. The two and one-half year period is divided into three phases consisting of the six months ended December 31, 2016 and each of the twelve months ended December 31, 2017 and 2018. The awards are subject to proration if at least 75% of the applicable target is achieved and are subject to forfeiture or acceleration based on changes in employment circumstances over the performance period. The stock-based compensation expense associated with the performance based inducement equity award will be recognized ratably over each phase based on the estimated probable achievement of each financial target. The awards are a material inducement to the General Manager and Chief Technology Officer entering into employment agreements with Stamps.com in connection with the acquisition of ShippingEasy. We determined the achievement of 100% of the earnings target for the six months ended December 31, 2016 is probable, therefore, we recognized approximately $946,000 of stock-based compensation expense for these inducement equity awards during the three months ended September 30, 2016. The $946,000 stock-based compensation expense recognized represents 50% of the total performance based inducement equity award for the first phase.

We also issued inducement stock option grants for an aggregate of approximately 62,000 shares of Stamps.com common stock to 48 new employees in connection with our acquisition of ShippingEasy. Each option vests 25% on the one year anniversary of the July 1, 2016 grant date with the remaining 75% vesting in approximately equal monthly increments over the immediately succeeding thirty-nine months provided that the option holder is still employed by the Company on the vesting dates. The stock options have a ten year term and an exercise price equal to the closing price of Stamps.com common stock on the grant date of July 1, 2016. The stock options were granted as inducements material to the new employees entering into employment with Stamps.com in connection with the acquisition of ShippingEasy. The related stock-based compensation expense we recognized during the three months ended September 30, 2016 was not material.

The total net purchase price for the ShippingEasy acquisition is allocated to the assets acquired and the liabilities assumed based on their fair values. We have made significant estimates and assumptions in determining the allocation of the purchase price. The preliminary allocation of purchase consideration is subject to change based on finalizing the deferred tax liability and the valuation of the intangible assets as of the date of acquisition. The following table is the allocation of the preliminary purchase price (in thousands, except years):

10

STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

	Fair Value			Fair Value			Useful Life (In Years)		Weighted Average Estimated Useful Life (In Years)
Trade accounts receivable	$	1,194
Other assets		76
Property and equipment		40
Goodwill		40,780
Identifiable intangible assets:
Trade name					$	1,304		8
Developed technology						6,948		5
Customer relationship						6,316		5
Non-compete agreements						1,111		3 to 5
Total identifiable intangible assets		15,679								5
Accrued expenses and other liabilities		(707	)
Deferred revenue		(185	)
Deferred tax liability		(1,430	)
Total purchase price	$	55,447

Goodwill represents the excess of the fair value of consideration given over the fair value of the tangible assets, identifiable intangible assets and liabilities assumed in a business combination and the potential synergy of combining the operations of Stamps.com and ShippingEasy. Such synergies include estimated cost reductions and enhanced sales which are expected to drive increased volume. The identified intangible assets consist of trade names, developed technology, non-compete agreements and customer relationships.  The estimated fair values of the trademark and developed technology were determined using the “relief from royalty” method.  The estimated fair value of the non-compete agreements was determined using the “with and without” method.  The estimated fair value of customer relationship was determined using the “excess earnings” method.  The rate utilized to discount net cash flows to their present values was approximately 23% and was determined after consideration of the overall enterprise rate of return and the relative risk and importance of the assets to the generation of future cash flows.  Trademark, developed technology, non-compete and customer relationship is amortized on a straight-line basis over their estimated useful lives.  The amortization of acquired intangibles will be approximately $761,000 per quarter for the remaining estimated useful lives.  The intangible assets and goodwill recorded in this acquisition are not deductible for tax purposes.

For the three and nine months ended September 30, 2016, the Company incurred approximately $111,000 and $604,000, respectively in acquisition expenses. These costs are included in general and administrative expense on our Consolidated Statements of Operations.

Pro-Forma Financial Information (unaudited)

The pro-forma information presented is for illustrative purposes only and is not necessarily indicative of the results of operations that would have been realized if the acquisition had been completed on the date indicated, nor is it indicative of future operating results. The pro-forma financial information does not include any adjustments for anticipated operating efficiencies or cost savings.

11

The following table presents the pro-forma financial information (in thousands, except per share amounts) and assumes the acquisition of ShippingEasy occurred on January 1, 2015:

STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Revenues	$	92,559	$	53,133	$	264,664	$	147,517
Income from operations		31,702		12,143		80,137		(7,580	)
Net income		18,744		6,705		46,846		(6,192	)
Basic earnings per share	$	1.09	$	0.41	$	2.70	$	(0.38	)
Diluted earnings per share	$	1.03	$	0.38	$	2.56	$	(0.38	)

Endicia Acquisition

On March 22, 2015 we entered into a Stock Purchase Agreement (the “Stock Purchase Agreement”) with Endicia, and Newell Rubbermaid Inc., a Delaware corporation (“Newell”).  The Stock Purchase Agreement provided for our purchase of all of the issued and outstanding shares of common stock of Endicia from a wholly owned indirect subsidiary of Newell for an aggregate purchase price of $215 million in cash (the “Transaction”).  The purchase price was subject to adjustment for changes in Endicia’s net working capital as of the date of the closing of the Transaction and certain transaction expenses and closing cash adjustments. After receiving regulatory clearance, we closed the Transaction on November 18, 2015.

As part of the funding of our acquisition of Endicia, we entered into a credit agreement with a group of banks on November 18, 2015, which provided for a term loan of $82.5 million and a revolving credit facility with a maximum borrowing of $82.5 million (collectively, the “Credit Agreement”) to fund our acquisition of Endicia. The Credit Agreement is secured by substantially all of our assets. We funded our acquisition with cash of $56.5 million and debt from our Credit Agreement of $164.5 million, totaling $221.0 million. The $221.0 million consists of the following: 1) purchase price of $214.2 million; 2) $1.5 million of debt issuance costs; and 3) the transfer of Endicia’s ending cash balance on November 17, 2015 of $5.3 million.  Total debt issuance costs of $1.8 million, which includes $300,000 of costs incurred prior to closing, were recorded as debt discount and are being accreted as interest expense over the life of the Credit Agreement. Our Credit Agreement matures on November 18, 2020.

As of September 30, 2016 our outstanding debt under the Credit Agreement, gross of debt issuance costs, was approximately $78.4 million under the term loan and approximately $72.0 million under the revolving credit facility.  Because we have a letter of credit of approximately $510,000 relating to a facility lease, we have approximately $10.0 million of available and unused borrowings under the revolving credit facility as of September 30, 2016.

12

During the first quarter of 2016, we adjusted the purchase price of Endicia and related goodwill by approximately $945,000 due to certain acquisition date balance sheet adjustments and the settlement of net working capital with Newell. The total estimated purchase price of the acquired company is allocated to the assets acquired and the liabilities assumed based on their fair values. We have made significant estimates and assumptions in determining the allocation of the purchase price. The following table sets forth the final allocation of the purchase price (in thousands, except years):

STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

	Fair Value			Fair Value		Useful Life (In Years)		Weighted Average Estimated Useful Life  (In Years)
Trade accounts receivable	$	10,247
Other assets		771
Property and equipment		2,798
Goodwill		131,860
Identifiable intangible assets:
Trade name				$	10,900		Indefinite
Developed technology					26,100		9
Customer relationship					43,200		6
Total identifiable intangible assets		80,200							7
Accrued expenses and other liabilities		(10,212	)
Deferred revenue		(926	)
Total purchase price	$	214,738

Goodwill represents the excess of the fair value of consideration given over the fair value of the tangible assets, identifiable intangible assets and liabilities assumed in a business combination and the potential synergy of combining the operations of Stamps.com and Endicia.  Such synergies include estimated cost reductions and enhanced sales and customer support which are expected to drive increased volume.  The entire amount of goodwill recorded in this acquisition is being deducted for tax purposes ratably over a 15 year period.  The identified intangible assets consist of trade name, developed technology and customer relationships.  The estimated fair values of the trade name and developed technology were determined using the “relief from royalty” method.  The estimated fair value of customer relationship was determined using the “excess earnings” method.  The rate utilized to discount net cash flows to their present values was approximately 20% and was determined after consideration of the overall enterprise rate of return and the relative risk and importance of the assets to the generation of future cash flows.  Developed technology and customer relationship is being amortized on a straight-line basis over their estimated useful lives.  The amortization of acquired intangibles is being approximately $2.5 million per quarter for the remaining estimated useful lives.

13

STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

ShipWorks Acquisition

On August 29, 2014, we acquired 100% of the outstanding equity of Interapptive Inc., which operates ShipWorks, in a cash transaction.  ShipWorks, based in St. Louis, Missouri, offers monthly subscription based e-commerce shipping software that provides simple, powerful and easy to use solutions for online sellers. ShipWorks solutions integrate with over 50 popular online sales and marketplace systems including eBay, PayPal, Amazon, Yahoo! and others.  ShipWorks offers multi-carrier shipping options and features including sending email notifications to buyers, updating online order status, generating reports and many more. During the fourth quarter of 2014, we adjusted the purchase price of ShipWorks by approximately $69,000.

The total purchase price for ShipWorks was approximately $22.1 million and was comprised of the following (in thousands):

	Fair Value
Cash consideration	$	21,952
Deferred consideration		181
Total purchase price	$	22,133

The total purchase price of the acquired company was allocated to the assets acquired and the liabilities assumed based on their fair values. We have made significant estimates and assumptions in determining the allocation of the purchase price. The following table sets forth the final allocation of the purchase price (in thousands, except years):

	Fair Value			Fair Value		Useful Life (In Years)		Weighted Average Estimated Useful Life  (In Years)
Cash and cash equivalents	$	803
Trade accounts receivable		353
Other assets		21
Property and equipment		1,091
Goodwill		16,349
Identifiable intangible assets:
Trademark				$	200		6
Developed technology					1,700		7
Non-compete agreement					700		4
Customer relationship					2,300		6
Total identifiable intangible assets		4,900							6
Accrued expenses and other liabilities		(1,119	)
Deferred revenue		(265	)
Total purchase price	$	22,133

Goodwill represents the excess of the fair value of consideration given over the fair value of the tangible assets, identifiable intangible assets and liabilities assumed in a business combination and the potential synergy of combining the operations of Stamps.com and ShipWorks.  The entire amount of goodwill recorded in this acquisition is being deducted for tax purposes ratably over a 15 year period.  The identified intangible assets consist of trademarks, developed technology, non-compete agreements and customer relationships.  The estimated fair values of the trademark and developed technology were determined using the “relief from royalty” method.  The estimated fair value of the non-compete was determined using the “with and without” method.  The estimated fair value of customer relationship was determined using the “excess earnings” method.  The rate utilized to discount net cash flows to their present values was approximately 13% and was determined after consideration of the overall enterprise rate of return and the relative risk and importance of the assets to the generation of future cash flows.  Trademark, developed technology, non-compete and customer relationship is amortized on a straight-line basis over their estimated useful lives.  The amortization of acquired intangibles is approximately $200,000 per quarter for the remaining estimated useful lives.

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STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

ShipStation Acquisition and Contingent Consideration

On June 10, 2014, we acquired 100% of the outstanding equity of Auctane LLC, which operates ShipStation, in a cash and contingent stock transaction.  ShipStation, based in Austin, Texas, offers monthly subscription based e-commerce shipping software primarily under the brands ShipStation and Auctane.  ShipStation is a leading web-based shipping software solution that allows online retailers and e-commerce merchants to organize, process, fulfill and ship their orders quickly and easily. ShipStation supports automatic order importing from over 50 shopping carts and marketplaces, including eBay, Amazon, Shopify, BigCommerce, Volusion, Squarespace and others.  ShipStation offers multi-carrier shipping options, and automation features like custom hierarchical rules and product profiles that allow customers to easily and automatically optimize their shipping. Using ShipStation, an online retailer or e-commerce merchant can ship their orders from wherever they sell and however they ship.

The total purchase price for ShipStation was approximately $66.2 million and was comprised of the following (in thousands, except shares):

	Fair Value
Cash consideration	$	50,000
Fair value of performance linked earn-out of up to 768,900 shares of   Stamps.com common stock (contingent consideration)		16,242
Total purchase price	$	66,242

The performance linked earn-out payment of Stamps.com shares (or contingent consideration) to former equity members of Auctane LLC was based on the achievement of certain financial measures within a future time period.  There were two periods in which the earn-out payment was calculated. The first earn-out period was based on the achievement of certain financial measures during the nine months ended December 31, 2014.  The second earn-out period was based on the achievement of certain financial measures during the twelve months ended December 31, 2015.  The range of Stamps.com shares available for the performance linked earn-out for both periods was between 576,675 to 768,900 shares provided that a minimum threshold for the financial measures was achieved. The first earn-out payment totaled 192,225 shares and was made in the first quarter of 2015.  The second earn-out payment totaled 576,675 shares and was made in the first quarter of 2016.  The fair value of the contingent consideration was determined at the acquisition date based on a probability weighted method, which incorporated management’s forecasts of financial measures and the likelihood of the financial measure targets being achieved using a series of options that replicate the pay-off structure of the earn-out, and the value of each of these options was determined using the Black-Scholes-Merton option pricing framework.

The total purchase price of the acquired company was allocated to the assets acquired and the liabilities assumed based on their fair values. We have made significant estimates and assumptions in determining the allocation of the purchase price. The following table sets forth the final allocation of the purchase price (in thousands, except years):

15

STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

	Fair Value			Fair Value		Useful Life (In Years)		Weighted Average Estimated Useful Life (In Years)
Cash and cash equivalents	$	1,117
Trade accounts receivable		254
Other assets		39
Property and equipment		187
Goodwill		50,544
Identifiable intangible assets:
Trademark				$	500		4
Developed technology					5,300		8
Non-compete agreement					400		4
Customer relationship					9,000		8
Total identifiable intangible assets		15,200							8
Accrued expenses and other liabilities		(835	)
Deferred revenue		(264	)
Total purchase price	$	66,242

Goodwill represents the excess of the fair value of consideration given over the fair value of the tangible assets, identifiable intangible assets and liabilities assumed in a business combination and the potential synergy of combining the operations of Stamps.com and ShipStation.  The entire amount of goodwill recorded in this acquisition is being deducted for tax purposes ratably over a 15 year period.  The identified intangible assets consist of trademarks, developed technology, non-compete agreements and customer relationships.  The estimated fair values of the trademark and developed technology were determined using the “relief from royalty” method.  The estimated fair value of the non-compete was determined using the “with and without” method.  The estimated fair value of customer relationship was determined using the “excess earnings” method.  The rate utilized to discount net cash flows to their present values was approximately 15% and was determined after consideration of the overall enterprise rate of return and the relative risk and importance of the assets to the generation of future cash flows.  Trademark, developed technology, non-compete and customer relationship is amortized on a straight-line basis over their estimated useful lives.  The amortization of acquired intangibles is approximately $500,000 per quarter for the remaining estimated useful lives.

Under ASC 805, we are required to re-measure the fair value of the contingent consideration at each reporting period.  During the 2015 periods, the fair value of the contingent consideration was determined based on a probability weighted method, which incorporated management’s forecasts of financial measures and the likelihood of the financial measure targets being achieved using a series of options that replicate the pay-off structure of the earn-out, and the value of each of these options was determined using the Black-Scholes-Merton option pricing framework.   Increases or decreases in the fair value of the contingent consideration can result from changes in the assumed timing and amount of revenue and expense estimates, changes in the probability of payment scenarios, changes in stock values, as well as changes in capital market conditions, which impact the discount rate used in the fair valuation. Significant judgment was employed in determining the appropriateness of these assumptions as of the acquisition date and for each subsequent reporting period.  We recognized $13.6 million and $24.1 million of contingent consideration charges during the three and nine months ended September 30, 2015, respectively.  As of December 31, 2015, the fair value of the contingent consideration was calculated by multiplying the expected earn-out shares to be distributed by our stock price at December 31, 2015. The fair value of the contingent consideration for the ShipStation acquisition was $63.2 million as of December 31, 2015, the final measurement date. No increases or decreases to the fair value of the contingent consideration were made following December 31, 2015 and prior to the second and final earn-out payment in the first quarter of 2016.

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STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

3. Commitments and Contingencies

Legal Proceedings

We are subject to various routine legal proceedings and claims incidental to our business, and we do not believe that these proceedings and claims would reasonably be expected to have a material adverse effect on our financial position, results of operations or cash flows.

Although management at present believes that the ultimate outcome of the various routine proceedings, individually and in the aggregate, will not materially harm our financial position, results of operations, cash flows, or overall trends, legal proceedings are subject to inherent uncertainties, and unfavorable rulings or other events could occur. An unfavorable outcome for an amount in excess of management’s present expectations may result in a material adverse impact on our business, results of operations, financial position, and overall trends.

Commitments

The following table is a schedule of our significant contractual obligations and commercial commitments (other than debt commitments), which consist only of future minimum lease payments under operating leases as of September 30, 2016 (in thousands):

Twelve Month Period Ending September 30,	Operating Lease Obligation
2017	$	3,845
2018		3,985
2019		1,626
2020		1,389
2021		1,204
Thereafter		198
Total	$	12,247

4. Net Income (loss) per Share

Net income (loss) per share represents net income (loss) attributable to common stockholders divided by the weighted average number of common shares outstanding during a reporting period. The diluted net income (loss) per share reflects the potential dilution that could occur if securities or other contracts to issue common stock, including stock options (commonly and hereafter referred to as “common stock equivalents”), were exercised or converted into common stock.  Diluted net income per share is calculated by dividing net income during a reporting period by the sum of the weighted average number of common shares outstanding plus common stock equivalents for the period.

The following table reconciles share amounts utilized to calculate basic and diluted net income (loss) per share (in thousands, except per share data):

17

STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Net income (loss)	$	18,672	$	7,274	$	46,201	$	(4,127	)
Basic - weighted average common shares		17,218		16,538		17,319		16,367
Diluted effect of common stock equivalents		902		979		1,006		—	(1)
Diluted - weighted average common shares		18,120		17,517		18,325		16,367
Earnings (loss) per share:
Basic	$	1.08	$	0.44	$	2.67	$	(0.25	)
Diluted	$	1.03	$	0.42	$	2.52	$	(0.25	)

(1) Common equivalent shares are excluded from the diluted net loss per share calculation as their effect is anti-dilutive.

The calculation of dilutive shares excludes the effect of the following options that are considered anti-dilutive (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Anti-dilutive stock options		514		64		269		2,990

5. Stock-Based Employee Compensation

We estimate the fair value of share-based payment awards on the date of grant using an option-pricing model and recognize stock-based compensation expense during each period based on the value of that portion of share-based payment awards that is ultimately expected to vest during the period, reduced for estimated forfeitures. We estimate forfeitures at the time of grant based on historical data and revise, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Compensation expense recognized for all employee stock options granted is recognized using the straight-line method over their respective vesting periods of up to five years. Starting in the third quarter of 2016, our stock-based compensation expense included performance based inducement equity awards relating to the ShippingEasy acquisition as described in Note 2 - Acquisitions.

The following table sets forth the stock-based compensation expense that we recognized for the periods indicated (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Stock-based compensation expense relating to:
Employee and director stock options	$	8,525	$	2,899	$	23,960	$	8,701
Employee stock purchases		297		162		795		403
Total stock-based compensation expense	$	8,822	$	3,061	$	24,755	$	9,104
Stock-based compensation expense relating to:
Cost of revenues	$	476	$	221	$	1,351	$	589
Sales and marketing		1,734		766		5,322		2,341
Research and development		1,916		641		4,696		1,806
General and administrative		4,696		1,433		13,386		4,368
Total stock-based compensation expense	$	8,822	$	3,061	$	24,755	$	9,104

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STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

We use the Black-Scholes-Merton option valuation model to estimate the fair value of share-based payment awards on the date of grant, which requires us to make a number of highly complex and subjective assumptions, including stock price volatility, expected term, risk-free interest rates and projected employee stock option exercise behaviors. In the case of options we grant, our assumption of expected volatility is based on the historical volatility of our stock price over the term equal to the expected life of the options. We base the risk-free interest rate on U.S. Treasury zero-coupon issues with a remaining term equal to the expected life of the options assumed at the date of grant.  The estimated expected life represents the weighted-average period the stock options are expected to remain outstanding, determined based on an analysis of historical exercise behavior.

The following are the weighted average assumptions used in the Black-Scholes valuation model for the periods indicated:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
Expected dividend yield		—			—			—			—
Risk-free interest rate		1.0	%		1.0	%		1.0	%		1.0	%
Expected volatility		47	%		46	%		48	%		46	%
Expected life (in years)		3.4			3.4			3.4			3.4
Expected forfeiture rate		6	%		6	%		6	%		6	%

6. Goodwill and Intangible Assets

Goodwill represents the excess of the fair value of consideration given over the fair value of the tangible assets, identifiable intangible assets and liabilities assumed in a business combination.

The following table summarizes goodwill as of December 31, 2015 and September 30, 2016 (in thousands):

	2016
Goodwill balance at December 31, 2015	$	197,807
Purchase price adjustment (see Note 2– “Acquisitions”)		945
Acquisition of ShippingEasy (see Note 2– “Acquisitions”)		40,780
Goodwill balance at September 30, 2016	$	239,532

Goodwill is reviewed for impairment annually on October 1^st utilizing a qualitative assessment or a two-step process.  We have an option to make a qualitative assessment of a reporting unit's goodwill for impairment.  If we choose to perform a qualitative assessment and determine the fair value more likely than not exceeds the carrying value, no further evaluation is necessary.  For reporting units where we perform the two-step process, the first step requires us to compare the fair value of each reporting unit, which we primarily determine using an income approach based on the present value of discounted cash flows, to the respective carrying value, which includes goodwill.  If the fair value of the reporting unit exceeds its carrying value, the goodwill is not considered impaired.  If the carrying value is higher than the fair value, there is an indication that impairment may exist and the second step is required.  In step two, the implied fair value of goodwill is calculated as the excess of the fair value of a reporting unit over the fair values assigned to its assets and liabilities.  If the implied fair value of goodwill is less than the carrying value of the reporting unit's goodwill, the difference is recognized as an impairment loss.

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STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

We have amortizable and non-amortizable intangible assets consisting of patents, trademarks, trade names, lease-in-place intangible assets, developed technology, non-compete agreements and customer relationships totaling approximately $125.4 million and $109.7 million in gross carrying amount as of September 30, 2016 and December 31, 2015, respectively.  Non-amortizable assets of $11.4 million consist primarily of trade name relating to the Endicia acquisition.

The following table summarizes our amortizable intangible assets as of September 30, 2016 (in thousands):

	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Patents and Others	$	8,889	$	8,763	$	126
Customer Relationships		60,816		9,696		51,120
Technology		40,048		4,801		35,247
Non-Compete		2,211		652		1,559
Trademark		2,004		398		1,606
Total amortizable intangible assets at September 30, 2016	$	113,968	$	24,310	$	89,658

We recorded amortization of intangible assets totaling approximately $10.5 million and $2.3 million for the nine months ended September 30, 2016 and 2015, respectively, which is included in general and administrative expense in our accompanying consolidated statements of operations.

As of September 30, 2016, the remaining weighted average amortization period for our amortizable intangible assets is approximately 5.8 years. Our estimated amortization expense for the next five years and thereafter is as follows (in thousands):

Twelve Month Period Ending September 30,	Estimated Amortization Expense
2017	$	16,038
2018		15,964
2019		15,623
2020		15,545
2021		14,422
Thereafter		12,066
Total	$	89,658

7. Income Taxes

Our income tax expense was $12.1 million and $30 million for the three and nine months ended September 30, 2016, respectively.  Our tax expense was primarily attributable to our pre-tax income resulting in current tax expense consisting of federal alternative minimum tax and various state taxes and our deferred income tax expense for the utilization of net operating losses and other temporary differences. We had income tax expense of $5.8 million and income tax benefit of $90,000 during the three and nine months ended September 30, 2015, respectively.  Our income tax expense and tax benefit during the three and nine months ended September 30, 2015, respectively, were primarily attributable to our pre-tax income and pre-tax losses during those periods including deferred income taxes.  Our effective tax rate differs from statutory federal rate as a result of several factors including non-temporary differences and state and local income taxes. We evaluated the appropriateness of our deferred tax assets and related valuation allowance in accordance with ASC 740 based on all available positive and negative evidence.  As of September 30, 2016 and December 31, 2015, we do not have any valuation allowance against our deferred tax assets.

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STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

8. Fair Value Measurements

Financial assets measured at fair value on a recurring basis are classified in one of the three following categories, which are described below:

Level 1 - Valuations based on unadjusted quoted prices for identical assets in an active market

Level 2 - Valuations based on quoted prices in markets where trading occurs infrequently or whose values are based on quoted prices of instruments with similar attributes in active markets

Level 3 - Valuations based on inputs that are unobservable and involve management judgment and our own assumptions about market participants and pricing

The following table summarizes our financial assets measured at fair value on a recurring basis as of September 30, 2016 and December 31, 2015 (in thousands):

			Fair Value Measurement at Reporting Date Using
Description	September 30, 2016		Quoted Prices in Active Markets  for Identical Assets (Level 1)		Significant Other Observable  Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	81,144	$	81,144	$	—	$	—
Available-for-sale debt securities		3,029		—		3,029		—
Total	$	84,173	$	81,144	$	3,029	$	—

			Fair Value Measurement at Reporting Date Using
Description	December 31, 2015		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	65,126	$	65,126	$	—	$	—
Available-for-sale debt securities		10,082		—		10,082		—
Total	$	75,208	$	65,126	$	10,082	$	—

The fair value of our available-for-sale debt securities included in the Level 2 category is based on the market values obtained from an independent pricing service that were evaluated using pricing models that vary by asset class and may incorporate available trade, bid and other market information and price quotes from well-established independent pricing vendors and broker-dealers.

As of December 31, 2015 we had $63.2 million of contingent consideration relating to our acquisition of ShipStation that was required to be measured at fair value using quoted prices in active markets (level 1) because the contingencies had been resolved as of that date. As of September 30, 2016, we had no contingent consideration.

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STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

The following table summarizes our contingent consideration measured at fair value on a recurring basis (in thousands):

			Fair Value Measurement at Reporting Date Using
Description	December 31, 2015		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable  Inputs (Level 3)
Contingent consideration – current	$	63,209	$	63,209	$	—	$	—

9. Cash, Cash Equivalents and Investments

Our cash equivalents and investments consist of money market, U.S. government obligations, asset-backed securities, and public corporate debt securities at September 30, 2016 and December 31, 2015. We consider all highly liquid investments with an original or remaining maturity of three months or less at the date of purchase to be cash equivalents. All of our investments are classified as available for sale and are recorded at market value using the specific identification method. Realized gains and losses are reflected in other income, net using the specific identification method.  There was no material realized gain or loss with respect to our investments during the three and nine months ended September 30, 2016. Unrealized gains and losses are included as a separate component of stockholders' equity.  We do not intend to sell investments with an amortized cost basis exceeding fair value and it is not likely that we will be required to sell the investments before recovery of their amortized cost bases. We have 3 securities with a total fair value of $27,000 that have unrealized losses of approximately $2,000 as of September 30, 2016.

On at least a quarterly basis, we evaluate our available for sale securities, and record an “other-than-temporary impairment” (“OTTI”) if we believe their fair value is less than historical cost and it is probable that we will not collect all contractual cash flows. We did not record any OTTI during the three and nine months ended September 30, 2016, after evaluating a number of factors including, but not limited to:

· How much fair value has declined below amortized cost

· The financial condition of the issuers

· Significant rating agency changes on the issuer

· Our intent and ability to hold the security for a period of time sufficient to allow for any anticipated recovery in fair value

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STAMPS.COM INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

The following tables summarize our cash, cash equivalents and investments as of September 30, 2016 and December 31, 2015 (in thousands):

	September 30, 2016
	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Cash and cash equivalents:
Cash	$	77,726		—		—		$	77,726
Money market		3,418		—		—			3,418
Total cash and cash equivalents		81,144		—		—			81,144
Short-term investments:
Corporate bonds and asset backed securities		3,014		18		(3	)		3,029
Total short-term investments		3,014		18		(3	)		3,029
Long-term investments:
Corporate bonds and asset backed securities		—		—		—			—
Total long-term investments		—		—		—			—
Cash, cash equivalents and investments	$	84,158		18		(3	)	$	84,173

	December 31, 2015
	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Cash and cash equivalents:
Cash	$	63,593		—		—		$	63,593
Money market		1,533		—		—			1,533
Total cash and cash equivalents		65,126		—		—			65,126
Short-term investments:
Corporate bonds and asset backed securities		8,549		7		(3	)		8,553
Total short-term investments		8,549		7		(3	)		8,553
Long-term investments:
Corporate bonds and asset backed securities		1,515		17		(3	)		1,529
Total long-term investments		1,515		17		(3	)		1,529
Cash, cash equivalents and investments	$	75,190		24		(6	)	$	75,208

The following table summarizes contractual maturities of our marketable fixed-income securities as of September 30, 2016 (in thousands):

	Amortized Cost		Estimated Fair Value
Due within one year	$	3,014	$	3,029
Due after one year		—		—
Total	$	3,014	$	3,029

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ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

This Quarterly Report on Form 10-Q (this “Report”) contains "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). These statements relate to expectations concerning matters that are not historical facts.   You can find many (but not all) of these statements by looking for words such as “approximates,” “believes,” “expects,” “seeks,” “anticipates,” “estimates,” “intends,” “plans,” “would,” “could,” ”should,” “will,” “may” or other similar expressions in this Report.  We claim the protection of the safe harbor contained in the Private Securities Litigation Reform Act of 1995 with respect to forward-looking statements.  We caution investors that any forward-looking statements presented in this Report, or that we may make orally or in writing from time to time, are based on beliefs and assumptions made by, and information currently available to, us at the respective times they are made.  Such statements are based on assumptions, and the actual outcome will be affected by known and unknown risks, trends and uncertainties and other factors that may be beyond our control or ability to predict. Although we believe that our assumptions are reasonable, they are not guarantees of future performance, and some will inevitably prove to be incorrect. As a result, our actual future results may differ from our expectations, and those differences may be material. We are not undertaking any obligation to update any forward-looking statements. Accordingly, investors should use caution in relying on forward-looking statements, which are based on known results and trends at the time they are made, to anticipate future results or trends.

Please refer to the risk factors under “Item 1A. Risk Factors” of our Form 10-K for the year ended December 31, 2015 as well as those described elsewhere in this Report and in our other public filings.  The risks included are not exhaustive, and additional factors could adversely affect our business and financial performance.  We operate in a very competitive and rapidly changing environment. New risk factors emerge from time to time, and it is not possible for management to predict all such risk factors, nor can it assess the impact of all such risk factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements. This Report and all subsequent written and oral forward-looking statements attributable to us or any person acting on our behalf are expressly qualified in their entirety by the cautionary statements contained or referred to in this section.

Our pending and registered trademarks include Stamps.com, Endicia, ShipStation, ShipWorks, ShippingEasy, NetStamps, Stamps.com Internet Postage, PhotoStamps, PictureItPostage, Photo NetStamps and the Stamps.com logo. This Report also references trademarks of other entities.  References in this Report to “we” “us” “our” or “Company” are references to Stamps.com Inc. and its subsidiaries.

Overview

Stamps.com® is a leading provider of Internet-based mailing and shipping solutions.  Under the Stamps.com and Endicia® branded solutions, our customers use our service to mail and ship a variety of mail pieces, including postcards, envelopes, flats and packages, using a wide range of United States Postal Service (“USPS”) mail classes, including First Class Mail®, Priority Mail®, Priority Mail Express®, Media Mail®, Parcel Select®, and others.  Customers using our service receive discounted postage rates compared to USPS retail on certain mail pieces such as First Class letters and domestic and international Priority Mail and Priority Mail Express packages.  Our customers include individuals, small businesses, home offices, medium-size businesses and large enterprises.  We were the first ever USPS-licensed vendor to offer mailing and shipping in a software-only business model in 1999.  We also offer multi-carrier shipping solutions under the brand names ShipStation®, ShipWorks® and ShippingEasy^TM.

Mailing and Shipping Business References

When we refer to our “mailing and shipping business,” we are referring to our mailing and shipping products and services including our mailing and shipping services and integrations, Mailing & Shipping Supplies Stores, branded insurance offerings and multi-carrier services. We do not include our customized postage business when we refer to our mailing and shipping business.

We have historically broken out our mailing and shipping business between Core mailing and shipping and Non-Core mailing and shipping.

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We previously referred to our "Core mailing and shipping business" as the portion of our mailing and shipping business targeting our small business, enterprise and high volume shipping customers acquired through our Core mailing and shipping marketing channels which include partnerships, online advertising, direct mail, direct sales, traditional media advertising and others.

We previously referred to our "Non-Core mailing and shipping business" as the portion of our mailing and shipping business that targeted a more consumer oriented customer through the online enhanced promotion marketing channel.

In light of our acquisitions, including the Endicia acquisition, we have concluded that the Non-Core mailing and shipping business is not material enough to break out separately in 2015 or subsequently, as it no longer provides investors with material additional insights into our business.

When we refer to our “mailing and shipping revenue,” we are referring to our service, product and insurance revenue generated by all of our mailing and shipping customers.

Services and Products

Mailing and Shipping Business

We offer the following mailing and shipping products and services to our customers under the Stamps.com, Endicia, ShipStation, ShipWorks and ShippingEasy brands:

· USPS Mailing and Shipping Services. After completing the registration process, customers can purchase and print postage 24 hours a day, seven days a week, through our software or web interface. Typically, customers fund an account balance prior to using our service. The customer then draws down their prepaid account balance as they print postage and repurchase postage as necessary.Our USPS-approved mailing and shipping services enables users to print “electronic stamps” directly onto envelopes, plain paper, or labels using only a standard personal computer, printer and Internet connection. Our services currently support a variety of USPS mail classes. Customers can also add to their mail pieces USPS Special Services such as USPS Tracking^TM, Signature Confirmation^TM, Registered Mail, Certified Mail, Insured Mail, Return Receipt, Collect on Delivery and Restricted Delivery. Our customers can print postage (1) on NetStamps® labels or DYMO Stamps® labels, which can be used just like regular stamps, (2) directly on envelopes, postcards or on other types of mail or labels, in a single step process that saves time and provides a professional look, (3) on plain 8.5” x 11” paper or on special labels for packages, and (4) on integrated customs forms for international mail and packages.

For added convenience, our mailing and shipping services incorporate address verification technology that verifies each destination address for mail sent using our service against a database of all known addresses in the United States. Our mailing and shipping services are also integrated with common small business and productivity software applications such as word processing, contact and address management, and accounting and financial applications. We also offer several different versions of NetStamps labels, such as Themed NetStamps labels and Photo NetStamps® labels, which allow customers to add stock or custom designs to their postage label.

We target different customer categories with multiple service plans that provide various features and capabilities. We target smaller offices, home offices, and smaller online sellers that need a basic set of mailing and shipping features with the Stamps.com Pro, Endicia Standard, Endicia for Mac and Endicia Premium plans. We target larger businesses that need a richer set of mailing capabilities with our Stamps.com Premier plan which adds multiple-user functionality, automated Certified Mail forms, additional reference codes and higher allowable postage balances. We target higher volume shippers such as fulfillment houses, retailers and e-commerce merchants with the Stamps.com Professional Shipper, Endicia Professional and Endicia Platinum Shipper plans which add features such as direct integration into a customer’s order databases, faster label printing speed, the ability to customize and save shipping profiles, and integrations with over 300 of the industry’s leading shipping management products, shopping carts, online marketplaces and other eCommerce solutions.

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We target large corporations with multiple geographic locations with the Stamps.com Enterprise plan which features enhanced reporting that allows a central location, such as a corporate headquarters, greater visibility and control over postage expenditures across their network of locations.  We target large volume mailers with Endicia Dazzle Express, Envelope Manager LE, and Move Update which have features for presort mail, Certified Mail, and bulk address updating.

Customers typically pay us a monthly service fee ranging from $9.95 to $34.99 depending on the service plan.  Under certain plans, customers pay a fee per transaction for shipping labels printed.  In certain circumstances, customers may be on a plan where they do not owe us any monthly service fees. We have an arrangement with the USPS under which if a customer or integration partner prints a certain amount of domestic or international Priority Mail or Priority Mail Express postage, the USPS compensates us directly and the customer can qualify to have their service fees waived or refunded.  In addition, we also have plans with service fees less than $9.95 which offer more limited functionality and are targeted at retaining customers who print a lower volume of postage.  We also offer the Endicia DYMO Stamps plan where customers are not charged a monthly fee but instead purchase labels for use as needed.  We also offer the Endicia Dazzle Express, Envelope Manager LE, and Move Update products for a one time upfront fee of $295 to $895.

· Multi-Carrier Shipping Services.  We offer multi-carrier shipping solutions through our ShipStation, ShipWorks and ShippingEasy brands as a result of our acquisitions.  The ShipStation, ShipWorks and ShippingEasy platforms offer leading solutions for medium and high volume shippers such as warehouses, fulfillment houses, e-commerce shippers, large retailers, and other types of high volume shippers that may need more than just the USPS for their business.

· Mailing and Shipping Integrations.  As part of our mailing and shipping services, we offer back-end integration solutions where we provide the electronic postage for transactions to partners who manage the front-end users. Our solutions integrate directly into the most popular e-commerce platforms, allowing web store managers to completely automate their order fulfillment process by processing, managing, and shipping orders from virtually any e-commerce source through a single interface without manual data entry. Managers can retrieve order data and print complete shipping labels for all types of USPS packages.

We have an integration partnership with Amazon.com that makes our domestic and international shipping labels available to Amazon.com Marketplace users. The service allows customers to automatically pay for postage using their Marketplace Payments account, to set a default ship-from address so they do not have to type or write it for each shipment, and to automatically populate the ship-to address on the label. Domestic and international mail classes are supported and Marketplace users may request carrier pickup from the USPS. A transaction fee per shipping label printed is charged to merchants who are not Stamps.com subscription customers.  In October 2012, Amazon.com launched their own internally developed Marketplace USPS shipping solution system utilizing the USPS’s ePostage branded solution that resulted in a reduction in postage printed through our solution. Amazon's shipping solution is utilized by merchants for certain mail classes while our shipping solution is utilized by merchants for the other mail classes. In addition, we continue to provide the integrated Amazon.com Marketplace solution to Stamps.com subscription customers.

We have an integration partnership with the USPS where we provide electronic postage for shipping transactions generated by Click-N-Ship®, a web-based service available at USPS.com that allows USPS customers to purchase and print shipping labels for domestic and international Priority Mail and Priority Mail Express packages at no additional mark-up over the cost of postage.

Endicia had an integration partnership with Etsy.com where Endicia provided electronic postage for shipping transactions generated by their users.  Etsy informed us that they would be switching their postage solution from Endicia to the USPS’s ePostage branded solution in February 2016, and as a result Endicia experienced a loss of postage volume and revenue from this partnership as compared to the same periods of 2015.

In addition, ShipStation and ShipWorks have integrations with shopping carts and online marketplaces as part of their multi-carrier shipping solutions.

· Mailing & Shipping Supplies Stores.   Stamps.com and Endicia Mailing & Shipping Supplies Stores (our “Supplies Stores”) are available to our customers from within our mailing and shipping solutions and sell NetStamps labels, DYMO Stamp labels, shipping labels, other mailing labels, dedicated postage printers, scales, and other mailing and shipping-focused office supplies. Our Supplies Stores feature store catalogs, messaging regarding free or discounted shipping promotions, cross-selling product recommendations during the checkout process, product search capabilities, and same-day shipping of orders with expedited shipping options.

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· Branded Insurance.  We offer Stamps.com branded insurance to our customers so that they may insure their mail or packages in a fully integrated, online process that eliminates any trips to the post office or the need to complete any special forms. Our branded insurance is provided in partnership with Parcel Insurance Plan and is underwritten by Fireman's Fund.  In addition, ShipStation, ShipWorks, ShippingEasy and Endicia also offer branded package insurance as part of their offerings.

· International.  We offer International postage solutions through our subsidiaries to certain international posts including the French Post and Canadian Post.

Customized Postage

We offer customized postage under the PhotoStamps® and PictureItPostage® brand names.  Customized postage is a patented form of postage that allows consumers to turn digital photos, designs or images into valid USPS-approved postage. With these products, individuals or businesses can create customized USPS approved postage using pictures of their children, pets, vacations, celebrations, business logos and more. Customized postage can be used as regular postage to send letters, postcards or packages. PhotoStamps and PictureItPostage are available from our separately marketed websites at www.photostamps.com and www.pictureitpostage.com, respectively. Customers upload a digital photograph or image file, customize the look and feel by choosing a border color to complement the photo, select the value of postage, and place the order online. Each sheet includes 10 or 20 individual PhotoStamps or PictureItPostage stamps, and orders arrive via U.S. Mail in a few business days.  Customized postage is also available in roll labels for high-volume orders.

Acquisitions

ShippingEasy

On June 16, 2016, we entered into a definitive agreement to acquire ShippingEasy for approximately $55.0 million. ShippingEasy, an Austin, Texas based company offers web-based multi-carrier shipping software that allows online retailers and e-commerce merchants to organize, process, fulfill and ship their orders quickly and easily. ShippingEasy's solution features integrations with more than 40 leading marketplaces, shopping carts, and e-commerce platforms, allowing its customers to import and export fulfillment and tracking data in real time across all of their selling channels. ShippingEasy currently has integrations with eBay, PayPal, Amazon, Shopify, BigCommerce, Magento, Volusion, Jane.com and many others. ShippingEasy's solution downloads orders from all selling channels and automatically maps custom shipping preferences, rates and delivery options across all of its supported carriers. ShippingEasy's easy-to-use solution also includes complimentary access to shipping specialists, helping merchants to streamline workflow and save on shipping costs.

On July 1, 2016, we completed our acquisition of ShippingEasy for approximately $55 million.  The purchase price was subject to adjustments for changes in ShippingEasy’s net working capital.  The net purchase price including adjustments for net working capital totaled approximately $55.4 million and was funded from current cash and investment balances.

In connection with the acquisition we issued performance based inducement equity awards to Katie May, who would serve as General Manager of ShippingEasy, and Barry Cox, who would serve as Chief Technology Officer of ShippingEasy. These inducement awards cover an aggregate of up to 43,567 common shares each to Ms. May and Mr. Cox if earnings targets for ShippingEasy are achieved over a two and one-half year period beginning July 1, 2016. The awards are subject to proration if at least 75% of the applicable target is achieved and are subject to forfeiture or acceleration based on changes in employment circumstances over the performance period. The awards are a material inducement to Ms. May and Mr. Cox entering into employment agreements with Stamps.com in connection with the acquisition.

We also issued inducement stock option grants for an aggregate of 62,000 shares of Stamps.com common stock to 48 new employees in connection with our acquisition of ShippingEasy. Each option vests 25% on the one year anniversary of the July 1, 2016 grant date with the remaining 75% vesting in approximately equal monthly increments over the immediately succeeding thirty-nine months provided that the option holder is still employed by the Company on the vesting dates. The stock options have a ten year term and an exercise price equal to the closing price of Stamps.com common stock on the grant date of July 1, 2016. The stock options were granted as inducements material to the new employees entering into employment with Stamps.com. See Note 2 – “Acquisitions” in our Notes to Consolidated Financial Statements for further description.

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Endicia

On March 22, 2015 we entered into a Stock Purchase Agreement (the “Stock Purchase Agreement”) with PSI Systems, Inc., a California corporation d/b/a Endicia (“Endicia”), and Newell Rubbermaid Inc., a Delaware corporation (“Newell”).  Endicia, based in Palo Alto, California, is a leading provider of high volume shipping technologies and solutions for shipping with the USPS.  The Stock Purchase Agreement provided for our purchase of all of the issued and outstanding shares of common stock of Endicia from a wholly owned indirect subsidiary of Newell for an aggregate purchase price of approximately $215 million in cash (the “Transaction”).  The purchase price was subject to adjustment for changes in Endicia’s net working capital as of the date of the closing of the Transaction and certain transaction expenses and closing cash adjustments. After receiving regulatory clearance, we closed the Transaction on November 18, 2015.

As part of the funding for our acquisition of Endicia, we entered into a credit agreement with a group of banks on November 18, 2015, which provides for a term loan of $82.5 million and a revolving credit facility with a maximum borrowing of $82.5 million (collectively, the “Credit Agreement”). The Credit Agreement is secured by substantially all our assets. We funded our acquisition with cash of $56.5 million and debt from our Credit Agreement of $164.5 million, totaling $221.0 million. The $221.0 million consists of the following: 1) purchase price of $214.2 million, 2) $1.5 million of debt issuance costs and 3) the transfer of Endicia’s ending cash balance on November 17, 2015 of $5.3 million. Total debt issuance costs of $1.8 million, which includes $300 thousand of costs incurred prior to closing, were recorded as debt discount and are being accreted as interest expense over the life of the Credit Agreement. Our Credit Agreement matures on November 18, 2020. During the first quarter of 2016, we adjusted the purchase price of Endicia and related goodwill by approximately $945,000.

Please see Note 2 – “Acquisitions” in our Notes to Consolidated Financial Statements for further description.

Results of Operations

The results of our operations during the three and nine months ended September 30, 2016 include operations of Endicia, ShipStation and ShipWorks. The results of our operations also include ShippingEasy’s operation beginning on the July 1, 2016 acquisition date.  The results of our operations during the three and nine months ended September 30, 2015 do not include the operations of Endicia or ShippingEasy.  Please see Note 2 – “Acquisitions” in our Notes to Consolidated Financial Statements for further description. Accordingly, care should be used in comparing periods that include the operations of Endicia and ShippingEasy with those that do not include such operations.

Three and Nine Months Ended September 30, 2016 and 2015

Total revenue increased 79% to $92.6 million in the three months ended September 30, 2016 from $51.7 million in the three months ended September 30, 2015. Total revenue increased 79% to $258.4 million in the nine months ended September 30, 2016 from $144.1 million in the nine months ended September 30, 2015. Mailing and shipping revenue, which includes service revenue, product revenue and insurance revenue, was $87.6 million in the three months ended September 30, 2016, an increase of 78% from $49.2 million in the three months ended September 30, 2015 and was $248.3 million in the nine months ended September 30, 2016, an increase of 78% from $139.5 million in the nine months ended September 30, 2015. Customized postage revenue increased 98% to $4.9 million in the three months ended September 30, 2016 from $2.5 million in the three months ended September 30, 2015 and was $10.0 million in the nine months ended September 30, 2016, an increase of 120% from $4.5 million in the nine months ended September 30, 2015.

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The following table sets forth the breakdown of revenue for the three and nine months ended September 30, 2016 and 2015 and the resulting percentage change (revenue in thousands):

	Three months ended September 30,							Nine months ended September 30,
	2016		2015		% Change			2016		2015		% Change
Revenues
Service	$	78,871	$	42,470		86	%	$	220,567	$	118,497		86	%
Product		4,703		4,193		12	%		15,109		13,206		14	%
Insurance		4,050		2,513		61	%		12,643		7,806		62	%
Mailing and shipping revenue		87,624		49,176		78	%		248,319		139,509		78	%
Customized postage		4,912		2,484		98	%		10,016		4,545		120	%
Other		23		9		156	%		74		27		174	%
Total revenues	$	92,559	$	51,669		79	%	$	258,409	$	144,081		79	%

We define “paid customers” for the quarter as ones from whom we successfully collected service fees or otherwise earned revenue at least once during that quarter, and we define average paid customers for the year as the average of the paid customers for each of the four quarters during the year.

The following table sets forth the growth in paid customers and average quarterly revenue per paid customer for our mailing and shipping business (in thousands except average quarterly revenue per paid customer and percentage):

	Three months ended September 30,
	2016		2015		% Change
Paid customers for the quarter		648		569		14	%
Average quarterly revenue per paid customer	$	45.05	$	28.81		56	%
Mailing and shipping revenue	$	87,624	$	49,176		78	%

The increase in paid customers is primarily the result of (1) our increased spending in our mailing and shipping sales and marketing channels, (2) a reduction in our paid customer churn rates and (3) the addition of paid customers from Endicia and ShippingEasy as a result of our acquisitions in the fourth quarter of 2015 and third quarter of 2016, respectively.

The increase in our average revenue per paid customer (“ARPU”) was primarily the result of (1) the addition of paid customers from our acquisition of Endicia and ShippingEasy where the ARPU for those paid customers is higher as compared to the ARPU from the existing Stamps.com customers, and (2) the growth in our high volume shipping business where we have the ability to better monetize postage volume as compared to monthly flat rate subscription fees.

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Revenue by Product

The following table shows our components of revenue and their respective percentages of total revenue for the periods indicated (in thousands except percentage):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
Revenues
Service	$	78,871		$	42,470		$	220,567		$	118,497
Product		4,703			4,193			15,109			13,206
Insurance		4,050			2,513			12,643			7,806
Customized postage		4,912			2,484			10,016			4,545
Other		23			9			74			27
Total revenues	$	92,559		$	51,669		$	258,409		$	144,081
Revenue as a  percentage of total revenues
Service		85.2	%		82.2	%		85.4	%		82.2	%
Product		5.1	%		8.1	%		5.8	%		9.2	%
Insurance		4.4	%		4.9	%		4.9	%		5.4	%
Customized postage		5.3	%		4.8	%		3.9	%		3.2	%
Other		0.0	%		0.0	%		0.0	%		0.0	%
Total revenue		100.0	%		100.0	%		100.0	%		100.0	%

Our revenue is derived primarily from five sources: (1) service and transaction related revenues from our USPS mailing and shipping services, our multi-carrier shipping services and our mailing and shipping integrations; (2) product revenue from the direct sale of consumables and supplies through our Supplies Stores; (3) package insurance revenue from our branded insurance offerings; (4) customized postage revenue from the sale of PhotoStamps and PictureItPostage postage labels; and (5) other revenue, consisting of advertising revenue derived from advertising programs with our existing customers.

For service revenue, we earn revenue in several different ways: (1) customers may pay us a monthly fee based on a subscription plan; (2) customers may qualify under our USPS partnership to have their service fees waived or refunded and then we are compensated directly by the USPS; (3) customers may pay us a fee per shipping label printed; (4) we may earn compensation by offering customers a discounted postage rate that is provided to the customers by our partners; and (5) we may earn other types of revenue shares or other compensation from specific customers or partners.

Service revenue increased 86% to $78.9 million in the three months ended September 30, 2016 from $42.5 million in the three months ended September 30, 2015 and increased 86% to $220.6 million in the nine months ended September 30, 2016 from $118.5 million in the nine months ended September 30, 2015. The 86% increase in service revenue during the quarter consisted of a 14% increase in our quarterly average paid customers and 63% increase in our average service revenue per paid customer.

The increase in paid customers is primarily the result of (1) our increased spending in our mailing and shipping sales and marketing channels, (2) a reduction in our paid customer churn rates and (3) the addition of paid customers from Endicia and ShippingEasy as a result of our acquisitions in the fourth quarter of 2015 and third quarter of 2016, respectively.

The increase in our average service revenue per paid customer was primarily the result of (1) our acquisition of Endicia and ShippingEasy, where the average service revenue per paid customer are higher as compared to the average service revenue per paid customer for existing Stamps.com customers and (2) the growth in our high volume shipping business where our average service revenue per paid customer reflects our ability to better monetize postage volume for shippers as compared to monthly flat rate subscription fees for traditional small business customers.

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Product revenue increased 12% to $4.7 million in the three months ended September 30, 2016 from $4.2 million in three months ended September 30, 2015 and increased 14% to $15.1 million in the nine months ended September 30, 2016 from $13.2 million in the nine months ended September 30, 2015. The increase is primarily attributable to an increase in (1) the addition of product revenue from our Endicia acquisition, and (2) sales of mailing and shipping labels and supplies as we continue to grow our customer base. Postage printed typically helps drive sales of consumable supplies such as labels. Total postage printed by customers using our mailing and shipping solutions in the third quarter of 2016 was approximately $1.2 billion, a 113% increase from the $547 million printed during the third quarter of 2015. Postage printed by customers was approximately $3.6 billion and $1.7 billion during the nine months ended September 30, 2016 and 2015, respectively, an increase of 116%.

Insurance revenue increased 61% to $4.1 million in the three months ended September 30, 2016 from $2.5 million in the three months ended September 30, 2015 and increased 62% to $12.6 million in the nine months ended September 30, 2016 from $7.8 million in nine months ended September 30, 2015. The increase in insurance revenue was primarily attributable to our acquisitions whose solutions target shipping customers who are more likely than mailing customers to purchase insurance.

Customized postage revenue increased 98% to $4.9 million in the three months ended September 30, 2016 from $2.5 million in the three months ended September 30, 2015 and increased 120% to $10.0 million in the nine months ended September 30, 2016 from $4.5 million in the nine months ended September 30, 2015.  The increase was primarily attributable to (1) an increase in PhotoStamps high volume business orders and (2) the addition of PictureItPostage as a result of our Endicia acquisition. The increase in customized postage revenue was partially offset by a decrease in PhotoStamps revenue from orders placed through the PhotoStamps website. The decrease in revenue from website orders is primarily attributable to a reduction in our PhotoStamps sales and marketing spending.

Cost of Revenue

The following table shows cost of revenues and cost of revenues as a percentage of associated revenues for the periods indicated (in thousands except percentage):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
Cost of revenues
Service	$	9,903		$	6,809		$	28,054		$	19,775
Product		1,579			1,364			5,019			4,400
Insurance		1,291			896			3,920			2,746
Customized postage		3,954			2,120			8,076			3,831
Total cost of revenues	$	16,727		$	11,189		$	45,069		$	30,752
Cost as percentage of associated revenues
Service		12.6	%		16.0	%		12.7	%		16.7	%
Product		33.6	%		32.5	%		33.2	%		33.3	%
Insurance		31.9	%		35.7	%		31.0	%		35.2	%
Customized postage		80.5	%		85.3	%		80.6	%		84.3	%
Total cost as a percentage of total revenues		18.1	%		21.7	%		17.4	%		21.3	%

Cost of service revenue principally consists of the cost of customer service, certain promotional expenses, system operating costs, credit card processing fees and customer misprints that do not qualify for reimbursement from the USPS.  Cost of product revenue principally consists of the cost of products sold through our Supplies Stores and the related costs of shipping and handling.  The cost of insurance revenue principally consists of parcel insurance offering costs through our third party insurance partners.  Cost of customized postage revenue principally consists of the face value of postage, customer service, image review costs, and printing and fulfillment costs.

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Cost of service revenue increased 45% to $9.9 million in the three months ended September 30, 2016 from $6.8 million in the three months ended September 30, 2015 and increased 42% to $28.1 million in the nine months ended September 30, 2016 from $19.8 million in the nine months ended September 30, 2015.  The increase was primarily attributable to higher customer service costs to support our growing customer base and higher credit card processing fees associated with our higher revenue offset by the decrease in our promotional expense.  Promotional expenses, which represents a material portion of total cost of service revenue, is expensed in the period in which a customer qualifies for the promotion while the revenue associated with the acquired customer is earned over the customer's lifetime. As a result, promotional expense for newly acquired customers may exceed the revenue earned from those customers in that period. Promotional expense decreased 28% to $583,000 in the three months ended September 30, 2016 from $814,000 in the three months ended September 30, 2015 and decreased 34% to $1.8 million in the nine months ended September 30, 2016 from $2.8 million in the nine months ended September 30, 2015.

Cost of product revenue increased 16% to $1.6 million in the three months ended September 30, 2016 from $1.4 million in the three months ended September 30, 2015 and increased 14% to $5.0 million in the nine months ended September 30, 2016 from $4.4 million in the nine months ended September 30, 2015. The increase in cost of product revenue was primarily attributable to the increase in product revenue over the same time period. The increase in cost of product revenue was in-line with the increase in product revenue over the same time period.

Cost of insurance revenue increased 44% to $1.3 million in the three months ended September 30, 2016 from $896 thousand in the three months ended September 30, 2015 and increased 43% to $3.9 million in the nine months ended September 30, 2016 from $2.7 million in the nine months ended September 30, 2015.  The increase in cost of insurance revenue resulted from growth in the number of insurance transactions, which was primarily attributable to our acquisitions.

Cost of customized postage revenue increased 87% to $4.0 million in the three months ended September 30, 2016 from $2.1 million in the three months ended September 30, 2015 and increased 111% to $8.1 million in the nine months ended September 30, 2016 from $3.8 million in the nine months ended September 30, 2015. The increase in cost of customized postage revenue is primarily due to the increase in our customized postage revenue.

Operating Expenses

The following table outlines the components of our operating expense and their respective percentages of total revenues for the periods indicated (in thousands except percentage):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
Operating expenses:
Sales and marketing	$	18,229		$	11,341		$	59,708		$	37,898
Research and development		9,111			4,758			25,579			13,720
General and administrative		16,901			9,470			49,276			30,004
Contingent consideration charges		—			1,920			—			26,027
Legal settlements and reserves		—			—			—			10,000
Total operating expenses	$	44,241		$	27,489		$	134,563		$	117,649
Operating expenses as a percent of total revenue:
Sales and marketing		19.7	%		21.9	%		23.1	%		26.3	%
Research and development		9.8	%		9.2	%		9.9	%		9.5	%
General and administrative		18.3	%		18.3	%		19.1	%		20.8	%
Contingent consideration charges		0.0	%		3.7	%		0.0	%		18.1	%
Legal settlements and reserves		0.0	%		0.0	%		0.0	%		6.9	%
Total operating expenses as a percentage of total revenues		47.8	%		53.2	%		52.1	%		81.7	%

Sales and Marketing

Sales and marketing expense principally consists of spending to acquire new customers and compensation and related expenses for personnel engaged in sales, marketing, and business development activities.  Sales and marketing expense increased 61% to $18.2 million in the three months ended September 30, 2016 from $11.3 million in the three months ended September 30, 2015 and increased 58% to $59.7 million in the nine months ended September 30, 2016 from $37.9 million in the nine months ended September 30, 2015. The increase is primarily due to (1) the addition of sales and marketing expense from our Endicia and ShippingEasy acquisitions, (2) an increase in stock-based compensation expense and (3) an increase in sales and marketing spending and activity in our mailing and shipping business as we continued to focus on acquiring customers.  Our sales and marketing programs include direct sales, customer referral programs, customer re-marketing efforts, direct mail, online advertising, partnerships, telemarketing, and traditional advertising.

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Research and Development

Research and development expense principally consists of compensation for personnel involved in the development of our services, depreciation of equipment and software and expenditures for consulting services and third party software. Research and development expense increased 91% to $9.1 million in the three months ended September 30, 2016 from $4.8 million in the three months ended September 30, 2015 and increased 86% to $25.6 million in the nine months ended September 30, 2016 from $13.7 million in the nine months ended September 30, 2015. The increase is primarily due to (1) the addition of research and development expense from our Endicia and ShippingEasy acquisitions and (2) an increase in headcount-related expenses including stock-based compensation expense to support our expanded product offerings and technology infrastructure investments.

General and Administrative

General and administrative expense principally consists of compensation and related costs for executive and administrative personnel, fees for legal and other professional services, depreciation of equipment, software and building used for general corporate purposes and amortization of intangible assets. General and administrative expense increased 78% to $16.9 million in the three months ended September 30, 2016 from $9.5 million in the three months ended September 30, 2015 and increased 64% to $49.3 million in the nine months ended September 30, 2016 from $30.0 million in the nine months ended September 30, 2015. The increase during the three months and nine months ended September 30, 2016 is primarily attributable to (1) the addition of general and administrative expense from our Endicia and ShippingEasy acquisitions, (2) an increase in headcount and headcount related expenses including stock-based compensation expense and infrastructure investments to support the growth in our business, and (3) an increase in the amortization of acquired intangibles related to our acquisitions.

Contingent consideration charges

Contingent consideration charges are attributable to the change in the fair value of our contingent consideration liability related to the acquisition of ShipStation. We did not incur any contingent consideration charges in 2016. Contingent consideration charge was $13.6 million in the nine months ended September 30, 2015. The decrease was due to ShipStation fully achieving all of their financial measures for the second earn-out in accordance with the purchase agreement and the distribution of the final earn-out in first quarter 2016.  See Note 2 – “Acquisition” in our Notes to Consolidated Financial Statements for further description of our contingent consideration liability related to the acquisition of ShipStation.

Interest and Other Income, Net

Interest and other income primarily consist of interest income from cash, cash equivalents and short-term and long-term investments. Interest and other income, net decreased 50% to $24,000 in the three months ended September 30, 2016 from $48,000 in the three months ended September 30, 2015 and decreased 5% to $98,000 in the nine months ended September 30, 2016 from $103,000 in the nine months ended September 30, 2015.  The decrease is primarily due lower income from our investments.

Interest Expense

Interest expense consists of interest expense from the debt under our credit facility and the associated accretion of debt issuance costs.  Interest expense was $828,000 in the three months ended September 30, 2016 compared to $0 in the three months ended September 30, 2015.  Interest expense was $2.6 million in the nine months ended September 30, 2016 compared to $0 in the nine months ended September 30, 2015.  The interest expense resulted from the debt incurred in connection with acquisition of Endicia in the fourth quarter of 2015.

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Provision for Income Taxes

Our income tax expense was $12.1 million and $30.0 million for the three and nine months ended September 30, 2016, respectively.  Our tax expense was primarily attributable to our pre-tax income including our current tax expense consisting of federal alternative minimum tax and various state taxes and our deferred income tax expense consisting of temporary tax items including stock compensation and differences in the book and tax lives of amortizable intangibles. Our income tax expense was $5.8 million for the three months ended September 30, 2015, and our income tax benefit was $90,000 for the nine months ended September 30, 2015.  Our income tax expense and tax benefit during the three and nine months ended September 30, 2015, respectively, were primarily attributable to our pre-tax income and pre-tax losses during those periods including deferred income taxes. Our effective tax rate differs from statutory federal rate as a result of several factors including non-temporary differences and state and local income taxes. We evaluated the appropriateness of our deferred tax assets and related valuation allowance in accordance with ASC 740 based on all available positive and negative evidence.  As of September 30, 2016 and December 31, 2015, we do not have any valuation allowance against our deferred tax assets.

Liquidity and Capital Resources

As of September 30, 2016 and December 31, 2015, we had $84.2 million and $75.2 million, respectively, in cash, cash equivalents and short-term and long-term investments. We invest available funds in short-term and long-term securities, including money market funds, corporate bonds, asset-backed securities, and US government and agency bonds, and do not engage in hedging or speculative activities.

Net cash provided by operating activities was approximately $104.0 million and $35.0 million during the nine months ended September 30, 2016 and 2015, respectively. The increase in net cash provided by operating activities was primarily attributable to growth in our revenue and net income and net changes in our operating assets and liabilities.

Net cash used in investing activities was approximately $51.9 million during the nine months ended September 30, 2016.  Net cash provided by investing activities was approximately $2.4 million during the nine months ended September 30, 2015.  The increase in net cash used in investing activities was primarily due to the $55.4 million of cash used to acquire ShippingEasy during the third quarter of 2016.

Net cash used in financing activities was approximately $36.1 million during the nine months ended September 30, 2016. Net cash provided by financing activities was approximately $11.3 million during the nine months ended September 30, 2015. The increase in net cash used in financing activities was primarily due to the treasury re-purchase of our common stock and payment on our term loan and revolving credit facility, including an optional prepayment of $10 million made during the second quarter of 2016.  Net cash provided by financing activities during the nine months ended September 30, 2015 was primarily proceeds from the exercise of stock options.

On November 18, 2015, we entered into a Credit Agreement with a group of banks, which provides for a term loan of $82.5 million and a revolving credit facility with a maximum borrowing of $82.5 million. Our Credit Agreement matures on November 18, 2020. In connection with entering into the Credit Agreement, we incurred approximately $1.8 million in debt issuance costs which were recorded as debt discount and are being accreted as interest expense over the life of the Credit Agreement. Amortization expense associated with the debt issuance costs for the three and nine months ended September 30, 2016 was approximately $93,000 and $279,000, respectively.

Borrowings under the term loan are payable in quarterly installments which began on December 31, 2015. We pay interest on our Credit Agreement equal to the London Interbank Offered Rate plus an applicable margin, between 1.25% to 2.00%, based upon certain financial measures. As of September 30, 2016, our applicable margin was 1.25% and the interest rate on our outstanding loan was approximately 1.88%.  We are subject to certain customary quarterly financial covenants under our Credit Agreement such as a maximum total leverage ratio and a minimum fixed charge coverage ratio. Further, the Credit Agreement includes negative covenants, subject to exceptions, restricting or limiting our ability and the ability of our subsidiaries to, among other things, incur additional indebtedness, grant liens, repurchase stock, pay dividends and engage in certain investment, acquisition and disposition transactions. As of September 30, 2016, we were in compliance with the covenants of the Credit Agreement.

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The contractual maturities of our debt obligations due subsequent to September 30, 2016 are as follows (in thousands):

Year ending September 30,	Amount
2017	$	6,188
2018		8,250
2019		10,313
2020		12,375
2021		113,239
Total debt		150,365
Less: deferred financing costs		1,558
Total debt, net of deferred financing costs	$	148,807

The estimated interest payments related to our debt due subsequent to September 30, 2016 are as follows (in thousands):

Year ending June 30,	Amount
2017	$	2,833
2018		2,704
2019		2,535
2020		2,333
2021		472
Total	$	10,877

The above estimated interest payments assume an interest rate of 1.88%, which is our interest rate as of September 30, 2016, and assume the entire amount of our revolving credit facility is paid on the maturity date of November 18, 2020.

We believe our available cash and marketable securities, together with the cash flow from operations, will be sufficient to fund our business for at least the next twelve months.

There have been no material changes to our contractual obligations and commercial commitments included in Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our Annual Report on Form 10-K for the year ended December 31, 2015.

Trend Analysis

As of the date of the filing of this Report, we expect the following trends for 2016:

We expect our mailing and shipping revenue to increase in 2016 compared to 2015.  Our ability to grow our mailing and shipping revenue is partly dependent on our ability to increase our sales and marketing spend to acquire and retain customers. To the extent we are not able to achieve our target increase in spending and acquire and retain customers, this could negatively impact our 2016 mailing and shipping revenue growth expectations. We expect customized postage revenue to increase in 2016 compared to 2015. High volume business orders can fluctuate significantly from quarter to quarter and therefore historical trends may not be indicative of future results for customized postage revenue.

We expect our sales and marketing spend to increase in 2016 compared to 2015. We will continue to monitor our customer metrics and the state of the economy and adjust our level of spending accordingly. Sales and marketing spend is expensed in the period incurred while the revenue and profits associated with the acquired customers are earned over the customers’ lifetimes. As a result, increased sales and marketing spend in future periods could result in a reduction in operating profit and cash flow compared to past periods.

We expect our research and development expenses to be higher in 2016 as compared to 2015 taking into account the trends experienced year-to-date and the additional expenses expected to result from the ShippingEasy acquisition.

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We expect our general and administrative expenses to be higher in 2016 as compared to 2015 taking into account the trends experienced year-to-date and the additional expenses expected to result from the ShippingEasy acquisition.

We expect our stock-based compensation expense to be higher in 2016 compared to 2015 taking into account the trends experienced year-to-date and the additional expenses expected to result from the ShippingEasy acquisition and the associated inducement grants.

We do not expect to incur contingent consideration charges in 2016 as the ShipStation earn-out period was completed as of December 31, 2015.

Tax expense (benefit) in 2015 may not be indicative of 2016 tax expense (benefit) due to factors that impact taxable income compared to book income, which can change from quarter-to-quarter.  As of September 30, 2016, the Company had a $39 million deferred tax asset resulting from past net operating losses and other tax credits. The Company expects to be able to continue to utilize its deferred tax assets to reduce cash taxes for the remainder of 2016.

As discussed above, our expectations are subject to substantial uncertainty and our results are subject to macro-economic factors and other factors which could cause these trends to be worse than our current expectation or which could cause actual results to be materially different than our current expectations. These expectations are “forward looking statements,” are made only as of the date of this Report and are subject to the qualification and limitations described in the forward-looking statements discussion at the beginning of this Item 2 and the risks and other factors set forth in Item 1A “Risk Factors” of our Annual Report on Form 10-K for the year ended December 31, 2015 filed with SEC on February 29, 2016.  Our business has grown through acquisition during 2014, 2015 and 2016; however the expectations above do not assume any future acquisitions or dispositions, or any related financings, any of which could have a significant impact on our current expectations.  As described in our forward-looking statements discussion, we do not undertake any obligation to release publicly any revisions to our forward-looking statements to reflect events or circumstances after the date of this Report.

Critical Accounting Policies and Judgments

Management’s discussion and analysis of our financial condition and results of operations is based on our unaudited financial statements. The preparation of these financial statements is based on the selection of accounting policies and the application of significant accounting estimates, some of which require management to make judgments, estimates and assumptions that affect the amounts reported in the financial statements and notes. Except as noted below, for more information regarding our critical accounting estimates and policies, see Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Policies and Judgments” of our Annual Report on Form 10-K for the year ended December 31, 2015, filed with the SEC on February 29, 2016.

Section 382 Update

We currently have federal and state net operating loss (“NOL”) carry-forwards. Under Internal Revenue Code Section 382 rules, if a “change of ownership” is triggered, our NOL asset may be impaired. A change in ownership can occur whenever there is a shift in ownership by more than 50 percentage points by one or more “5% shareholders” within a three-year period.

Under our certificate of incorporation, any person, company or investment firm that wishes to become a “5% shareholder” (as defined in our certificate of incorporation) must first obtain a waiver from our board of directors. In addition, any person, company or investment firm that is already a “5% shareholder” of ours cannot make any additional purchases of our stock without a waiver from our board of directors.  The NOL protective provisions contained in our certificate of incorporation (the “NOL Protective Measures”) are more specifically described in our Definitive Proxy filed with the SEC on April 2, 2008.

On July 22, 2010, our board of directors suspended the NOL Protective Measures by approving a waiver from the NOL Protective Measures to all persons and entities, including companies and investment firms.  As a result, our stockholders are now allowed to become “5% shareholders” and existing “5% shareholders” are allowed to make additional purchases of our stock each without having to comply with the restrictions contained in the NOL Protective Measures. This waiver may be revoked by our board of directors at any time if the board deems the revocation necessary to protect against a Section 382 “change of ownership” that would limit our ability to utilize future NOLs.  For complete details about this waiver from the NOL Protective Measures, please see our Current Report on Form 8-K filed with the SEC on July 28, 2010.

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As of October 31, 2016, we had 17,052,401shares outstanding, and therefore ownership of approximately 852,000 shares or more would currently constitute a “5% shareholder.”  We strongly urge that any shareholder contemplating becoming a 5% or more shareholder contact us before doing so.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Our exposure to market rate risk for changes in interest rates relates primarily to our outstanding borrowings under our Credit Agreement, as well as our investment portfolio. Interest rate fluctuations impact the interest expense incurred on borrowings under the Credit Agreement, as the interest rate is based on the London Interbank Offered Rate.  A 10% increase or decrease in the London Interbank Offered Rate will not significantly affect interest expense. We have not used derivative financial instruments in our investment portfolio.  None of the instruments in our investment portfolio are held for trading purposes. Our cash equivalents and investments consist of money market, U.S. government obligations, asset-backed securities and public corporate debt securities with weighted average maturities of 81 days at September 30, 2016. Our cash equivalents and investments approximated $84.2 million at September 30, 2016 and had a weighted average interest rate of 0.3%. Interest rate fluctuations impact the carrying value of the portfolio. The fair value of our portfolio of marketable securities would not be significantly affected by either a 10% increase or decrease in the rates of interest due primarily to the short-term nature of the portfolio.  We do not believe that the future market risks related to the above securities will have a material adverse impact on our financial position, results of operations or liquidity.

ITEM 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act).

As of the end of the period covered by this Report, our management evaluated, with the participation of our Principal Executive Officer and Principal Financial Officer, the effectiveness of our disclosure controls and procedures as of the end of the period covered by this Report. Based on that evaluation, our Principal Executive Officer and Principal Financial Officer have concluded, as of that time, that our disclosure controls and procedures were effective.

Changes in internal controls

During the quarter ended September 30, 2016, there has been no change in our internal control over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act) that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II – OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

See Note 3 – “Commitments and Contingencies – Legal Proceedings” of our Notes to Consolidated Financial Statements, which is incorporated herein by reference.

ITEM 1A. RISK FACTORS

We are not aware of any material changes to the risk factors included in Item 1A “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2015, filed with the SEC on February 29, 2016.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Issuer Purchases of Equity Securities

Period	Total Number of Shares Purchased	Average Price Paid  per Share	Total Number of Shares Purchased as Part of Publicly Announced Plans or  Programs	Approximate Dollar Value of Shares That May Yet be Purchased Under the Plans or Programs (in 000’s)
July 1, 2016 – July 31, 2016	—	—	—	$40,000
August 1, 2016 – August 31, 2016	103,427	$87.23	103,427	$30,978
September 1, 2016 – September 30, 2016	89,903	$93.14	89,903	$22,604

On July 27, 2016, our Board of Directors approved a new stock repurchase plan authorizing us to repurchase up to $40 million of our common stock during the next nine months.  On October 25, 2016, our Board of Directors approved a new stock repurchase plan that replaces our prior stock repurchase plan authorizing us to repurchase up to $90 million over the next 6 months.

We will consider repurchasing stock in the future by evaluating such factors as the price of the stock, the daily trading volume and the availability of large blocks of stock and any additional constraints related to material inside information we may possess. Our repurchase of any of our shares will be subject to limitations that may be imposed on such repurchases by applicable securities laws and regulations and the rules of The NASDAQ Stock Market, as well as restrictions under our Credit Agreement. Repurchases may be made in the open market, or in privately negotiated transactions from time to time at our discretion. We have no commitment to make any repurchases.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

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ITEM 5. OTHER INFORMATION

None.

ITEM 6. EXHIBITS

10.1	Management Incentive Plan, dated as of July 1, 2016, by and among ShippingEasy, Inc., Stamps.com Inc. and the Participant Representative (as defined therein), and acknowledged and agreed to by Katie May and Barry Cox (1) †
31.1	Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002. *
32.2	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002. *

101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

† Confidential treatment has been requested and received with respect to certain portions of this exhibit, which portions have been filed separately with the Securities and Exchange Commission.

* Furnished, not filed.

(1)          Incorporated herein by reference to the Company’s Form 10-Q filed with the Securities and Exchange Commission on August 9, 2016 (File No. 000-26427)

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	STAMPS.COM INC.
	(Registrant)
November 9, 2016	By:	/s/ KEN MCBRIDE
		Ken McBride
		Chairman and Chief Executive Officer
November 9, 2016	By:	/s/ KYLE HUEBNER
		Kyle Huebner
		Co-President and Chief Financial Officer

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EX-31.1

Exhibit 31.1

Certification Pursuant to Section 302

of the Sarbanes-Oxley Act of 2002

I, Ken McBride, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Stamps.com Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15(d)-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 9, 2016	/s/ KEN MCBRIDE
	Ken McBride
	Chairman and Chief Executive Officer
	(Principal Executive Officer)

EX-31.2

Exhibit 31.2

Certification Pursuant to Section 302

of the Sarbanes-Oxley Act of 2002

I, Kyle Huebner, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Stamps.com Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15(d)-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:  November 9, 2016	/s/ KYLE HUEBNER
	Kyle Huebner
	Co-President and Chief Financial Officer
	(Principal Financial Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Stamps.com Inc. (the "Company") on Form 10-Q for the period ended September 30, 2016 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Ken McBride, Chairman and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

          (1) The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, as amended; and

          (2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

Date: November 9, 2016	/s/ KEN MCBRIDE
	Ken McBride
	Chairman and Chief Executive Officer
	(Principal Executive Officer)

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Stamps.com Inc. (the "Company") on Form 10-Q for the period ended September 30, 2016 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Kyle Huebner, Co-President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

          (1) The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable of the Securities Exchange Act of 1934, as amended; and

          (2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

Date: November 9, 2016	/s/ KYLE HUEBNER
	Kyle Huebner
	Co-President and Chief Financial Officer
	(Principal Financial Officer)

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

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Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Oct. 31, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	STAMPS.COM INC
Entity Central Index Key	0001082923
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		17,052,401
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2016

XML

CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 81,144	$ 65,126
Short-term investments	3,029	8,553
Accounts receivable, net	60,089	55,052
Other current assets	9,595	8,345
Total current assets	153,857	137,076
Property and equipment, net	32,032	31,707
Goodwill	239,532	197,807
Intangible assets, net	101,046	95,950
Long-term investments	0	1,529
Deferred income taxes, net	38,841	57,224
Other assets	7,829	7,321
Total assets	573,137	528,614
Current liabilities:
Accounts payable and accrued expenses	70,710	60,816
Deferred revenue	6,175	4,000
Current portion of debt, net of debt issuance costs	5,814	4,267
Contingent consideration	0	63,209
Total current liabilities	82,699	132,292
Long-term debt, net of debt issuance costs	142,993	157,353
Total liabilities	225,692	289,645
Commitments and contingencies
Stockholders' equity:
Common stock, $.001 par value per share Authorized shares: 47,500 in 2016 and 2015 Issued shares: 30,425 in 2016 and 29,463 in 2015 Outstanding shares: 17,131 in 2016 and 16,697 in 2015	53	52
Additional paid-in capital	825,941	716,253
Treasury stock, at cost, 13,294 shares in 2016 and 12,766 in 2015	(219,821)	(172,410)
Accumulated deficit	(258,743)	(304,944)
Accumulated other comprehensive income	15	18
Total stockholders' equity	347,445	238,969
Total liabilities and stockholders' equity	$ 573,137	$ 528,614

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CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - $ / shares shares in Thousands	Sep. 30, 2016	Dec. 31, 2015
Stockholders' equity
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	47,500	47,500
Common stock, shares issued (in shares)	30,425	29,463
Common stock, shares outstanding (in shares)	17,131	16,697
Treasury stock, shares (in shares)	13,294	12,766

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CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues:
Service	$ 78,871	$ 42,470	$ 220,567	$ 118,497
Product	4,703	4,193	15,109	13,206
Insurance	4,050	2,513	12,643	7,806
Customized postage	4,912	2,484	10,016	4,545
Other	23	9	74	27
Total revenues	92,559	51,669	258,409	144,081
Cost of revenues (exclusive of amortization of intangible assets, which is included in general and administrative expense):
Service	9,903	6,809	28,054	19,775
Product	1,579	1,364	5,019	4,400
Insurance	1,291	896	3,920	2,746
Customized postage	3,954	2,120	8,076	3,831
Total cost of revenues	16,727	11,189	45,069	30,752
Gross profit	75,832	40,480	213,340	113,329
Operating expenses:
Sales and marketing	18,229	11,341	59,708	37,898
Research and development	9,111	4,758	25,579	13,720
General and administrative	16,901	9,470	49,276	30,004
Contingent consideration charges	0	1,920	0	26,027
Litigation settlement	0	0	0	10,000
Total operating expenses	44,241	27,489	134,563	117,649
Income (loss) from operations	31,591	12,991	78,777	(4,320)
Interest expense	(828)	0	(2,648)	0
Interest and other income (loss), net	24	48	98	103
Income (loss) before income taxes	30,787	13,039	76,227	(4,217)
Income tax expense (benefit)	12,115	5,765	30,026	(90)
Net income (loss)	$ 18,672	$ 7,274	$ 46,201	$ (4,127)
Net income (loss) per share
Basic (in dollars per share)	$ 1.08	$ 0.44	$ 2.67	$ (0.25)
Diluted (in dollars per share)	$ 1.03	$ 0.42	$ 2.52	$ (0.25)
Weighted average shares outstanding:
Basic (in shares)	17,218	16,538	17,319	16,367
Diluted (in shares)	18,120	17,517	18,325	16,367	[1]

[1] Common equivalent shares are excluded from the diluted loss per share calculation as their effect is anti-dilutive.

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) [Abstract]
Net income (loss)	$ 18,672	$ 7,274	$ 46,201	$ (4,127)
Other comprehensive loss, net of tax:
Unrealized loss on investments	(7)	(1)	(3)	(15)
Comprehensive income (loss)	$ 18,665	$ 7,273	$ 46,198	$ (4,142)

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CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Operating activities:
Net income (loss)	$ 46,201	$ (4,127)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	13,922	5,169
Stock-based compensation expense	24,755	9,104
Deferred income tax expense (benefit)	26,724	(872)
Stock option windfall tax benefit	(9,771)	0
Accretion of debt issuance costs	279	0
Contingent consideration	0	26,027
Changes in operating assets and liabilities, net of assets and liabilities acquired:
Accounts receivable	(3,843)	(2,970)
Other current assets	(1,275)	(1,934)
Other assets	(508)	(767)
Deferred revenue	2,122	162
Accounts payable and accrued expenses	5,350	5,171
Net cash provided by operating activities	103,956	34,963
Investing activities:
Sale of short-term investments	6,988	3,918
Purchase of short-term investments	0	(977)
Sale of long-term investments	77	1,064
Purchase of long-term investments	(15)	0
Acquisition of Endicia	(573)	0
Acquisition of ShippingEasy, net of cash acquired	(55,447)	0
Acquisition of property and equipment	(2,903)	(1,652)
Net cash (used in) provided by investing activities	(51,873)	2,353
Financing activities:
Proceeds from short term financing obligation, net of repayments	2,713	1,815
Principal payments on term loan	(3,092)	0
Payment on revolving credit facility	(10,000)	0
Proceeds from exercise of stock options	9,773	7,940
Issuance of common stock under Employee Stock Purchase Plan	2,181	1,555
Repurchase of common stock	(47,411)	0
Stock option windfall tax benefit	9,771	0
Net cash (used in) provided by financing activities	(36,065)	11,310
Net increase in cash and cash equivalents	16,018	48,626
Cash and cash equivalents at beginning of period	65,126	40,933
Cash and cash equivalents at end of period	81,144	89,559
Supplemental Information:
Capital expenditures accrued but not paid at period end	122	6
Tenant improvement allowance	676	0
Income taxes paid	2,723	835
Issuance of 2015 and 2014 earn-out shares (see Note -2 "Acquisitions")	63,209	9,225
Non cash adjustment of purchase price for Endicia acquisition	$ 372	$ 0

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Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2016

Summary of Significant Accounting Policies [Abstract]

Summary of Significant Accounting Policies

1. Summary of Significant Accounting Policies

Basis of Presentation

We prepared the consolidated financial statements included herein pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with United States (“U.S.”) generally accepted accounting principles (“GAAP”) have been condensed or omitted pursuant to such rules and regulations. We believe that the disclosures are adequate to make the information presented not misleading. We recommend that these financial statements be read in conjunction with the audited financial statements and the notes thereto included in our latest annual report on Form 10-K for the fiscal year ended December 31, 2015, filed with the SEC on February 29, 2016.

In our opinion, these unaudited financial statements contain all adjustments (consisting of normal recurring adjustments) necessary to present fairly our financial position as of September 30, 2016, our results of operations for the three and nine months ended September 30, 2016 and our cash flows for the nine months ended September 30, 2016.  The results of operations for the interim period are not necessarily indicative of the results that may be expected for the year ending December 31, 2016.

Principles of Consolidation

The consolidated financial statements include the accounts of Stamps.com Inc., Auctane LLC, Interapptive, Inc., PSI Systems Inc., ShippingEasy Group, Inc., and PhotoStamps Inc.  In June 2014, we completed our acquisition of 100% of the outstanding equity of Auctane LLC, the Texas limited liability company that operates ShipStation (“Auctane LLC” or “ShipStation”) in a cash and contingent stock transaction.  ShipStation, based in Austin, Texas, offers monthly subscription based e-commerce shipping software primarily under the brands ShipStation and Auctane.  In August 2014, we completed our acquisition of 100% of the outstanding equity of Interapptive, Inc., a Missouri corporation, that operates ShipWorks (“Interapptive, Inc.” or “ShipWorks”) in a cash transaction.  ShipWorks, based in St. Louis, Missouri, offers monthly subscription based e-commerce shipping software.  In November 2015, we completed our acquisition of 100% of the outstanding shares of PSI Systems, Inc. (“Endicia”).  Endicia, based in Palo Alto, California, is a leading provider of high volume shipping technologies and solutions for shipping with the United States Postal Service (“USPS”). In July 2016, we completed our acquisition of 100% of the outstanding shares of ShippingEasy Group, Inc. (“ShippingEasy”).  ShippingEasy, based in Austin, Texas, offers web-based multi-carrier shipping software that allows online retailers and e-commerce merchants to organize, process, fulfill and ship their orders quickly and easily. See Note 2– “Acquisitions” for further discussion of our acquisitions.

Because 100% of the voting control of Auctane LLC, Interapptive, Inc. PSI Systems, Inc., and ShippingEasy Group, Inc. is held by us, we have consolidated ShipStation, ShipWorks, Endicia and ShippingEasy from the date we obtained control in the accompanying consolidated financial statements. Similarly, due to our 100% control of PhotoStamps, Inc., PhotoStamps Inc. is also consolidated in the accompanying consolidated financial statements from the date of its inception. All significant intercompany accounts and transactions have been eliminated.

Use of Estimates and Risk Management

The preparation of financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the amounts reported in the financial statements and the accompanying notes.  Actual results could differ from those estimates, and such differences may be material to the financial statements. Examples include estimates of loss contingencies, promotional coupon redemptions, the number of PhotoStamps retail boxes that will not be redeemed, realizability of deferred income taxes, the estimates and assumptions used to calculate stock-based compensation, the estimates and assumptions used to calculate the allocation of the purchase price related to our acquisitions, including related contingent consideration, and estimates regarding the useful lives of our building, patents and other amortizable intangible assets, and goodwill.

Contingencies and Litigation

We are subject to various routine litigation matters as a claimant and a defendant. We record any amounts recovered in these matters when received. We establish loss provisions for claims against us when the loss is both probable and can be reasonably estimated.  If either or both of the criteria are not met, we assess whether there is at least a reasonable possibility that a loss, or additional losses, may have been incurred. If there is a reasonable possibility that a loss or additional loss may have been incurred for such proceedings, we disclose the estimate of the amount of loss or possible range of loss, or disclose that an estimate of loss cannot be made, as applicable.

Fair Value of Financial Instruments

Carrying amounts of certain of our financial instruments, including cash, cash equivalents, accounts receivable and accounts payable, approximate fair value due to their short maturities. The fair values of investments are determined using quoted market prices for those securities or similar financial instruments.  The fair value of our debt approximates book value.

In 2015 the fair value of the contingent consideration related to our acquisition of ShipStation was determined based on a probability weighted method, which incorporated management’s forecasts of financial measures related to ShipStation and the likelihood of the financial measure targets related to such acquisition being achieved using a series of options that replicated the pay-off structure of the earn-out, and the value of each of these options was determined using the Black-Scholes-Merton option pricing framework.  Changes in the fair value of the contingent consideration obligations resulted from changes in the assumed timing and amount of revenue and expense estimates, changes in the probability of payment scenarios, changes in stock values, as well as changes in capital market conditions, which impacted the discount rate used in the fair valuation. Significant judgment was employed in determining the appropriateness of these assumptions as of the acquisition date and for each subsequent reporting period during 2015. See Note 2 – “Acquisitions” for a further description of the contingent consideration relating to ShipStation.

Property and Equipment

We account for property and equipment at cost less accumulated depreciation and amortization. We compute depreciation using the straight-line method over the estimated useful life of the asset, generally three to five years for furniture, fixtures and equipment and ten to forty years for building and building improvements. We have a policy of capitalizing expenditures that materially increase assets’ useful lives and charging ordinary maintenance and repairs to operations as incurred. When property or equipment is disposed of, the cost and related accumulated depreciation and amortization are removed, and any gain or loss is included in operations.

Business Combinations

The acquisition method of accounting is used for business combinations. The results of operations of acquired businesses are included in our consolidated financial statements prospectively from the date of acquisition. The fair value of purchase consideration is allocated to the assets acquired and liabilities assumed from the acquired entity and is generally based on their fair value at the acquisition date. The excess of the fair value of purchase consideration over the fair value of the assets acquired and liabilities assumed is recorded as goodwill. Historically the primary items that have generated goodwill include anticipated synergies between the acquired business and the Company and the acquired assembled workforce, neither of which qualifies for recognition as an intangible asset. Acquisition-related expenses are recognized in our consolidated financial statements as incurred.

Goodwill

Goodwill represents the excess of the fair value of consideration given over the fair value of the tangible assets, identifiable intangible assets and liabilities assumed in a business combination.  We are required to test goodwill for impairment annually and whenever events or circumstances indicate the fair value of a reporting unit may be below its carrying value.  Goodwill is reviewed for impairment annually on October 1. A reporting unit is the operating segment or a business that is one level below that operating segment. Reporting units are aggregated as a single reporting unit if they have similar economic characteristics. As of September 30, 2016, we are not aware of any indicators of impairment that would require an impairment analysis other than our annual impairment analysis.

Trademarks, Patents and Intangible Assets

Acquired trademarks, patents and other intangibles include both amortizable and non-amortizable assets and are included in intangible assets, net in the accompanying consolidated balance sheets. Intangible assets are carried at cost less accumulated amortization. Cost associated with internally developed intangible assets is typically expensed as incurred as research and development costs.  Amortization of amortizable intangible assets is calculated on a straight-line basis, which is consistent with expected future cash flows.

Impairment of Long-Lived Assets and Intangible Assets

Long-lived assets including intangible assets with finite useful lives are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to future net cash flows expected to be generated by the asset.  If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets.  Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell.

Intangible assets that have indefinite useful lives are not amortized but, instead, tested at least annually for impairment while intangible assets that have finite useful lives continue to be amortized over their respective useful lives.

Deferred Revenue

Our deferred revenue relates mainly to service revenue and PhotoStamps retail boxes.  Deferred revenue related to our service revenue generally arises due to the timing of payment versus the provision of services for certain customers billed in advance.  We previously sold PhotoStamps retail boxes to our customers through our website and selected third parties.  Proceeds from the sale of our PhotoStamps retail boxes were initially recorded as a liability when received. We recorded the liability for outstanding PhotoStamps retail boxes in deferred revenue. We no longer sell PhotoStamps retail boxes.

Revenue Recognition

We recognize revenue from product sales or services rendered, as well as commissions from advertising or sale of products by third party vendors to our customer base when the following four revenue recognition criteria are met: persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the selling price is fixed or determinable, and collectability is reasonably assured.

Service revenue is primarily derived from monthly service fees and transaction related revenues from our USPS mailing and shipping services, our multi-carrier shipping services and our mailing and shipping integrations, and is recognized in the period that services are provided. Product sales, net of return allowances, are recorded when the products are shipped and title passes to customers. Sales of items, including customized postage, sold to customers are made pursuant to a sales contract that provides for transfer of both title and risk of loss upon our delivery to the carrier. Return allowances for expected product returns, which reduce product revenue, are estimated using historical experience. Commissions from the advertising or sale of products by a third party vendor to our customer base are recognized when the revenue is earned and collection is deemed probable.

Customers purchase postage through our mailing and shipping solutions.  If the postage purchase funds are transferred directly from the customers to the USPS, we do not recognize revenue for this postage, as it is purchased by our customers directly from the USPS.

Customized postage revenue, which includes the face value of postage, from the sale of PhotoStamps and PictureItPostage sheets and rolls is made pursuant to a sales contract that provides for transfer of both title and risk of loss upon our delivery to the carrier and revenue is recognized at that time. Sale of PhotoStamps retail boxes are initially recorded as deferred revenue.  PhotoStamps revenue related to the sale of these PhotoStamps retail boxes is subsequently recognized when either: 1) the PhotoStamps retail box is redeemed; or 2) the likelihood of the PhotoStamps retail box being redeemed is deemed remote (“breakage”) and there is no legal obligation to remit the value of the unredeemed PhotoStamps retail boxes.

On a limited basis, we allow third parties to offer products and promotions to our customer base. These arrangements generally provide payment in the form of a flat fee or revenue sharing arrangements where we receive payment upon customers accessing third party products and services. During the three and nine months ended September 30, 2016 and 2015 revenue from such advertising arrangements was not significant.

We provide our customers with the opportunity to purchase parcel insurance directly through our solutions. Insurance revenue represents the gross amount charged to the customer for purchasing insurance and the related cost represents the amount paid to our insurance brokers. We recognize revenue on insurance purchases upon the ship date of the insured package.

PhotoStamps Retail Boxes

We previously sold PhotoStamps retail boxes that are redeemable for PhotoStamps on our website.  The PhotoStamps retail boxes were sold through various third party retail partners. We no longer sell PhotoStamps retail boxes. Our PhotoStamps retail boxes are not subject to administrative fees on unredeemed boxes and have no expiration date.  PhotoStamps retail box sales were recorded as deferred revenue.  We concluded that sufficient company-specific historical evidence existed to determine the period of time after which the likelihood of the PhotoStamps retail boxes being redeemed was remote.  Based on our analysis of the redemption data, we estimate that period of time to be 60 months after the sale of our PhotoStamps retail boxes.

We recognize breakage revenue related to our PhotoStamps retail boxes utilizing the redemption recognition method. Under the redemption recognition method, we recognize breakage revenue from unredeemed retail boxes in proportion to the revenue recognized from the retail boxes that have been redeemed.  Revenue from our PhotoStamps retail boxes is included in Customized postage revenue. PhotoStamps retail box breakage revenue was not significant during the three and nine months ended September 30, 2016 and 2015.

Income Taxes

We account for income taxes in accordance with Financial Accounting Standards Board (“FASB”) ASC Topic No. 740, Income Taxes (“ASC 740”), which requires that deferred tax assets and liabilities be recognized using enacted tax rates for the effect of temporary differences between the book and tax basis of recorded assets and liabilities. ASC 740 also requires that deferred tax assets be reduced by a valuation allowance if it is more likely than not that some or all of the net deferred tax assets will not be realized. We record a valuation allowance to reduce our gross deferred tax assets, which are primarily comprised of U.S. Federal and State tax loss carry-forwards, to the amount that is more likely than not (a likelihood of more than 50 percent) to be realized.  In order for us to realize our deferred tax assets, we must be able to generate sufficient taxable income. We evaluate the appropriateness of our deferred tax assets and related valuation allowance in accordance with ASC 740 based on all available positive and negative evidence. As of September 30, 2016 and December 31, 2015 we do not have any valuation allowance recorded to reduce our gross deferred tax assets as we believe we have met the more likely than not threshold and we will realize our tax loss carry-forwards in the foreseeable future.

Short-Term Financing Obligation

We utilize short-term financing, which is separate from our debt, to fund certain company operations.  Short-term financing is included in accrued expenses.  As of September 30, 2016 we had $16 million in short-term financing obligations and $120 million of unused credit.  As of December 31, 2015 we had $13.3 million in short-term financing obligations and $34.2 million of unused credit.

Recent Accounting Pronouncements

In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers ("ASU 2014-09") an updated standard on revenue recognition. This ASU will supersede the revenue recognition requirements in Accounting Standards Codification Topic 605, Revenue Recognition, and most industry-specific guidance.  ASU 2014-09 provides enhancements to the quality and consistency of how revenue is reported while also improving comparability in the financial statements of companies reporting using US GAAP and International Financial Reporting Standards.  The core principle of the new standard is for companies to recognize revenue to depict the transfer of goods or services to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so the companies may be required to use more judgment and make more estimates than under current authoritative guidance. ASU 2014-09 will be effective for the Company in the first quarter of fiscal 2018 and may be applied on a full retrospective or modified retrospective approach. The Company is currently evaluating the impact the adoption of this standard will have on its consolidated financial statements.

In April 2015, the FASB issued guidance to help entities evaluate whether fees paid in a cloud computing arrangement include a software license. Pursuant to this guidance, when a cloud computing arrangement includes a software license, the customer accounts for the software license element of the arrangement consistent with the acquisition of other software licenses. When a cloud computing arrangement does not include a software license element, the customer accounts for the arrangement as a service contract. The prospective adoption of this guidance on January 1, 2016 did not have a material effect on the Consolidated Financial Statements.

In November 2015, the FASB issued guidance that requires deferred tax assets and liabilities to be presented as noncurrent in a classified statement of financial position. The guidance is effective beginning January 1, 2017, with early adoption permitted. The guidance can be applied prospectively or retrospectively. The Company elected to early adopt the requirements and apply them retrospectively as of December 31, 2015.

In February 2016, the FASB issued a new accounting standard for leases. The new standard generally requires the recognition of financing and operating lease liabilities and corresponding right-of-use assets on the balance sheet. For financing leases, a lessee recognizes amortization of the right-of-use asset as an operating expense over the lease term separately from interest on the lease liability. For operating leases, a lessee recognizes its total lease expense as an operating expense over the lease term. The amendments are effective for the Company in the first quarter of 2019 using a modified retrospective approach with early adoption permitted. The Company is currently evaluating the impact the adoption of this standard will have on its consolidated financial statements.

In March 2016, the FASB simplified certain areas of accounting for stock-based compensation, including accounting for the income tax consequences of stock-based compensation, determining the classification of awards as either equity or liabilities, classifying certain items within the statement of cash flows and introducing an accounting policy election to account for forfeitures of non-vested awards as they occur. The simplified guidance is effective for the Company in the first quarter of 2017. Depending on the area simplified, the guidance is effective either prospectively, retrospectively or using a modified retrospective approach. Early adoption is permitted. The Company is evaluating the effect of adoption on its Consolidated Financial Statements.

Subsequent Events

We are not aware of any material subsequent events or transactions that have occurred that would require recognition in the financial statements or disclosure in the notes to the financial statements.

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Acquisitions

9 Months Ended

Sep. 30, 2016

Acquisitions [Abstract]

Acquisitions

2. Acquisitions

We have accounted for all of our acquisitions under the acquisition method of accounting in accordance with the provisions of FASB ASC Topic No. 805 Business Combinations (“ASC 805”).

ShippingEasy Acquisition

On July 1, 2016, we completed our acquisition of ShippingEasy Group, Inc. (“ShippingEasy”) when our wholly owned subsidiary was merged with and into ShippingEasy, resulting in our 100% ownership of ShippingEasy.  The merger agreement provided for us to pay $55.0 million in aggregate merger consideration to the former owners of ShippingEasy, payable in cash. The purchase price was subject to adjustments for changes in ShippingEasy’s net working capital.  The net purchase price including adjustments for net working capital totaled approximately $55.4 million and was funded from current cash and investment balances.

In connection with the acquisition, we issued performance based inducement equity awards to each of the General Manager and Chief Technology Officer of ShippingEasy. These inducement awards cover an aggregate of up to 43,567 common shares each if earnings targets for ShippingEasy are achieved over a two and one-half year period beginning July 1, 2016. The two and one-half year period is divided into three phases consisting of the six months ended December 31, 2016 and each of the twelve months ended December 31, 2017 and 2018. The awards are subject to proration if at least 75% of the applicable target is achieved and are subject to forfeiture or acceleration based on changes in employment circumstances over the performance period. The stock-based compensation expense associated with the performance based inducement equity award will be recognized ratably over each phase based on the estimated probable achievement of each financial target. The awards are a material inducement to the General Manager and Chief Technology Officer entering into employment agreements with Stamps.com in connection with the acquisition of ShippingEasy. We determined the achievement of 100% of the earnings target for the six months ended December 31, 2016 is probable, therefore, we recognized approximately $946,000 of stock-based compensation expense for these inducement equity awards during the three months ended September 30, 2016. The $946,000 stock-based compensation expense recognized represents 50% of the total performance based inducement equity award for the first phase.

We also issued inducement stock option grants for an aggregate of approximately 62,000 shares of Stamps.com common stock to 48 new employees in connection with our acquisition of ShippingEasy. Each option vests 25% on the one year anniversary of the July 1, 2016 grant date with the remaining 75% vesting in approximately equal monthly increments over the immediately succeeding thirty-nine months provided that the option holder is still employed by the Company on the vesting dates. The stock options have a ten year term and an exercise price equal to the closing price of Stamps.com common stock on the grant date of July 1, 2016. The stock options were granted as inducements material to the new employees entering into employment with Stamps.com in connection with the acquisition of ShippingEasy. The related stock-based compensation expense we recognized during the three months ended September 30, 2016 was not material.

The total net purchase price for the ShippingEasy acquisition is allocated to the assets acquired and the liabilities assumed based on their fair values. We have made significant estimates and assumptions in determining the allocation of the purchase price. The preliminary allocation of purchase consideration is subject to change based on finalizing the deferred tax liability and the valuation of the intangible assets as of the date of acquisition. The following table is the allocation of the preliminary purchase price (in thousands, except years):

	Fair Value			Fair Value			Useful Life (In Years)		Weighted Average Estimated Useful Life (In Years)
Trade accounts receivable	$	1,194
Other assets		76
Property and equipment		40
Goodwill		40,780
Identifiable intangible assets:
Trade name					$	1,304		8
Developed technology						6,948		5
Customer relationship						6,316		5
Non-compete agreements						1,111		3 to 5
Total identifiable intangible assets		15,679								5
Accrued expenses and other liabilities		(707	)
Deferred revenue		(185	)
Deferred tax liability		(1,430	)
Total purchase price	$	55,447

Goodwill represents the excess of the fair value of consideration given over the fair value of the tangible assets, identifiable intangible assets and liabilities assumed in a business combination and the potential synergy of combining the operations of Stamps.com and ShippingEasy.  Such synergies include estimated cost reductions and enhanced sales which are expected to drive increased volume.  The identified intangible assets consist of trade names, developed technology, non-compete agreements and customer relationships.  The estimated fair values of the trademark and developed technology were determined using the “relief from royalty” method.  The estimated fair value of the non-compete agreements was determined using the “with and without” method.  The estimated fair value of customer relationship was determined using the “excess earnings” method.  The rate utilized to discount net cash flows to their present values was approximately 23% and was determined after consideration of the overall enterprise rate of return and the relative risk and importance of the assets to the generation of future cash flows.  Trademark, developed technology, non-compete and customer relationship is amortized on a straight-line basis over their estimated useful lives.  The amortization of acquired intangibles will be approximately $761,000 per quarter for the remaining estimated useful lives.  The intangible assets and goodwill recorded in this acquisition are not deductible for tax purposes.

For the three and nine months ended September 30, 2016, the Company incurred approximately $111,000 and $604,000, respectively in acquisition expenses. These costs are included in general and administrative expense on our Consolidated Statements of Operations.

Pro-Forma Financial Information (unaudited)

The pro-forma information presented is for illustrative purposes only and is not necessarily indicative of the results of operations that would have been realized if the acquisition had been completed on the date indicated, nor is it indicative of future operating results. The pro-forma financial information does not include any adjustments for anticipated operating efficiencies or cost savings.

The following table presents the pro-forma financial information (in thousands, except per share amounts) and assumes the acquisition of ShippingEasy occurred on January 1, 2015:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Revenues	$	92,559	$	53,133	$	264,664	$	147,517
Income from operations		31,702		12,143		80,137		(7,580	)
Net income		18,744		6,705		46,846		(6,192	)
Basic earnings per share	$	1.09	$	0.41	$	2.70	$	(0.38	)
Diluted earnings per share	$	1.03	$	0.38	$	2.56	$	(0.38	)

Endicia Acquisition

On March 22, 2015 we entered into a Stock Purchase Agreement (the “Stock Purchase Agreement”) with Endicia, and Newell Rubbermaid Inc., a Delaware corporation (“Newell”).  The Stock Purchase Agreement provided for our purchase of all of the issued and outstanding shares of common stock of Endicia from a wholly owned indirect subsidiary of Newell for an aggregate purchase price of $215 million in cash (the “Transaction”).  The purchase price was subject to adjustment for changes in Endicia’s net working capital as of the date of the closing of the Transaction and certain transaction expenses and closing cash adjustments. After receiving regulatory clearance, we closed the Transaction on November 18, 2015.

As part of the funding of our acquisition of Endicia, we entered into a credit agreement with a group of banks on November 18, 2015, which provided for a term loan of $82.5 million and a revolving credit facility with a maximum borrowing of $82.5 million (collectively, the “Credit Agreement”) to fund our acquisition of Endicia. The Credit Agreement is secured by substantially all of our assets. We funded our acquisition with cash of $56.5 million and debt from our Credit Agreement of $164.5 million, totaling $221.0 million. The $221.0 million consists of the following: 1) purchase price of $214.2 million; 2) $1.5 million of debt issuance costs; and 3) the transfer of Endicia’s ending cash balance on November 17, 2015 of $5.3 million.  Total debt issuance costs of $1.8 million, which includes $300,000 of costs incurred prior to closing, were recorded as debt discount and are being accreted as interest expense over the life of the Credit Agreement. Our Credit Agreement matures on November 18, 2020.

As of September 30, 2016 our outstanding debt under the Credit Agreement, gross of debt issuance costs, was approximately $78.4 million under the term loan and approximately $72.0 million under the revolving credit facility.  Because we have a letter of credit of approximately $510,000 relating to a facility lease, we have approximately $10.0 million of available and unused borrowings under the revolving credit facility as of September 30, 2016.

During the first quarter of 2016, we adjusted the purchase price of Endicia and related goodwill by approximately $945,000 due to certain acquisition date balance sheet adjustments and the settlement of net working capital with Newell. The total estimated purchase price of the acquired company is allocated to the assets acquired and the liabilities assumed based on their fair values. We have made significant estimates and assumptions in determining the allocation of the purchase price. The following table sets forth the final allocation of the purchase price (in thousands, except years):

	Fair Value			Fair Value		Useful Life (In Years)		Weighted Average Estimated Useful Life  (In Years)
Trade accounts receivable	$	10,247
Other assets		771
Property and equipment		2,798
Goodwill		131,860
Identifiable intangible assets:
Trade name				$	10,900		Indefinite
Developed technology					26,100		9
Customer relationship					43,200		6
Total identifiable intangible assets		80,200							7
Accrued expenses and other liabilities		(10,212	)
Deferred revenue		(926	)
Total purchase price	$	214,738

Goodwill represents the excess of the fair value of consideration given over the fair value of the tangible assets, identifiable intangible assets and liabilities assumed in a business combination and the potential synergy of combining the operations of Stamps.com and Endicia.  Such synergies include estimated cost reductions and enhanced sales and customer support which are expected to drive increased volume.  The entire amount of goodwill recorded in this acquisition is being deducted for tax purposes ratably over a 15 year period.  The identified intangible assets consist of trade name, developed technology and customer relationships.  The estimated fair values of the trade name and developed technology were determined using the “relief from royalty” method.  The estimated fair value of customer relationship was determined using the “excess earnings” method.  The rate utilized to discount net cash flows to their present values was approximately 20% and was determined after consideration of the overall enterprise rate of return and the relative risk and importance of the assets to the generation of future cash flows.  Developed technology and customer relationship is being amortized on a straight-line basis over their estimated useful lives.  The amortization of acquired intangibles is being approximately $2.5 million per quarter for the remaining estimated useful lives.

ShipWorks Acquisition

On August 29, 2014, we acquired 100% of the outstanding equity of Interapptive Inc., which operates ShipWorks, in a cash transaction.  ShipWorks, based in St. Louis, Missouri, offers monthly subscription based e-commerce shipping software that provides simple, powerful and easy to use solutions for online sellers. ShipWorks solutions integrate with over 50 popular online sales and marketplace systems including eBay, PayPal, Amazon, Yahoo! and others.  ShipWorks offers multi-carrier shipping options and features including sending email notifications to buyers, updating online order status, generating reports and many more. During the fourth quarter of 2014, we adjusted the purchase price of ShipWorks by approximately $69,000.

The total purchase price for ShipWorks was approximately $22.1 million and was comprised of the following (in thousands):

	Fair Value
Cash consideration	$	21,952
Deferred consideration		181
Total purchase price	$	22,133

The total purchase price of the acquired company was allocated to the assets acquired and the liabilities assumed based on their fair values. We have made significant estimates and assumptions in determining the allocation of the purchase price. The following table sets forth the final allocation of the purchase price (in thousands, except years):

	Fair Value			Fair Value		Useful Life (In Years)		Weighted Average Estimated Useful Life  (In Years)
Cash and cash equivalents	$	803
Trade accounts receivable		353
Other assets		21
Property and equipment		1,091
Goodwill		16,349
Identifiable intangible assets:
Trademark				$	200		6
Developed technology					1,700		7
Non-compete agreement					700		4
Customer relationship					2,300		6
Total identifiable intangible assets		4,900							6
Accrued expenses and other liabilities		(1,119	)
Deferred revenue		(265	)
Total purchase price	$	22,133

Goodwill represents the excess of the fair value of consideration given over the fair value of the tangible assets, identifiable intangible assets and liabilities assumed in a business combination and the potential synergy of combining the operations of Stamps.com and ShipWorks.  The entire amount of goodwill recorded in this acquisition is being deducted for tax purposes ratably over a 15 year period.  The identified intangible assets consist of trademarks, developed technology, non-compete agreements and customer relationships.  The estimated fair values of the trademark and developed technology were determined using the “relief from royalty” method.  The estimated fair value of the non-compete was determined using the “with and without” method.  The estimated fair value of customer relationship was determined using the “excess earnings” method.  The rate utilized to discount net cash flows to their present values was approximately 13% and was determined after consideration of the overall enterprise rate of return and the relative risk and importance of the assets to the generation of future cash flows.  Trademark, developed technology, non-compete and customer relationship is amortized on a straight-line basis over their estimated useful lives.  The amortization of acquired intangibles is approximately $200,000 per quarter for the remaining estimated useful lives.

ShipStation Acquisition and Contingent Consideration

On June 10, 2014, we acquired 100% of the outstanding equity of Auctane LLC, which operates ShipStation, in a cash and contingent stock transaction.  ShipStation, based in Austin, Texas, offers monthly subscription based e-commerce shipping software primarily under the brands ShipStation and Auctane.  ShipStation is a leading web-based shipping software solution that allows online retailers and e-commerce merchants to organize, process, fulfill and ship their orders quickly and easily. ShipStation supports automatic order importing from over 50 shopping carts and marketplaces, including eBay, Amazon, Shopify, BigCommerce, Volusion, Squarespace and others.  ShipStation offers multi-carrier shipping options, and automation features like custom hierarchical rules and product profiles that allow customers to easily and automatically optimize their shipping. Using ShipStation, an online retailer or e-commerce merchant can ship their orders from wherever they sell and however they ship.

The total purchase price for ShipStation was approximately $66.2 million and was comprised of the following (in thousands, except shares):

	Fair Value
Cash consideration	$	50,000
Fair value of performance linked earn-out of up to 768,900 shares of   Stamps.com common stock (contingent consideration)		16,242
Total purchase price	$	66,242

The performance linked earn-out payment of Stamps.com shares (or contingent consideration) to former equity members of Auctane LLC was based on the achievement of certain financial measures within a future time period.  There were two periods in which the earn-out payment was calculated. The first earn-out period was based on the achievement of certain financial measures during the nine months ended December 31, 2014.  The second earn-out period was based on the achievement of certain financial measures during the twelve months ended December 31, 2015.  The range of Stamps.com shares available for the performance linked earn-out for both periods was between 576,675 to 768,900 shares provided that a minimum threshold for the financial measures was achieved. The first earn-out payment totaled 192,225 shares and was made in the first quarter of 2015.  The second earn-out payment totaled 576,675 shares and was made in the first quarter of 2016.  The fair value of the contingent consideration was determined at the acquisition date based on a probability weighted method, which incorporated management’s forecasts of financial measures and the likelihood of the financial measure targets being achieved using a series of options that replicate the pay-off structure of the earn-out, and the value of each of these options was determined using the Black-Scholes-Merton option pricing framework.

The total purchase price of the acquired company was allocated to the assets acquired and the liabilities assumed based on their fair values. We have made significant estimates and assumptions in determining the allocation of the purchase price. The following table sets forth the final allocation of the purchase price (in thousands, except years):

	Fair Value			Fair Value		Useful Life (In Years)		Weighted Average Estimated Useful Life (In Years)
Cash and cash equivalents	$	1,117
Trade accounts receivable		254
Other assets		39
Property and equipment		187
Goodwill		50,544
Identifiable intangible assets:
Trademark				$	500		4
Developed technology					5,300		8
Non-compete agreement					400		4
Customer relationship					9,000		8
Total identifiable intangible assets		15,200							8
Accrued expenses and other liabilities		(835	)
Deferred revenue		(264	)
Total purchase price	$	66,242

Goodwill represents the excess of the fair value of consideration given over the fair value of the tangible assets, identifiable intangible assets and liabilities assumed in a business combination and the potential synergy of combining the operations of Stamps.com and ShipStation.  The entire amount of goodwill recorded in this acquisition is being deducted for tax purposes ratably over a 15 year period.  The identified intangible assets consist of trademarks, developed technology, non-compete agreements and customer relationships.  The estimated fair values of the trademark and developed technology were determined using the “relief from royalty” method.  The estimated fair value of the non-compete was determined using the “with and without” method.  The estimated fair value of customer relationship was determined using the “excess earnings” method.  The rate utilized to discount net cash flows to their present values was approximately 15% and was determined after consideration of the overall enterprise rate of return and the relative risk and importance of the assets to the generation of future cash flows.  Trademark, developed technology, non-compete and customer relationship is amortized on a straight-line basis over their estimated useful lives.  The amortization of acquired intangibles is approximately $500,000 per quarter for the remaining estimated useful lives.

Under ASC 805, we are required to re-measure the fair value of the contingent consideration at each reporting period.  During the 2015 periods, the fair value of the contingent consideration was determined based on a probability weighted method, which incorporated management’s forecasts of financial measures and the likelihood of the financial measure targets being achieved using a series of options that replicate the pay-off structure of the earn-out, and the value of each of these options was determined using the Black-Scholes-Merton option pricing framework.   Increases or decreases in the fair value of the contingent consideration can result from changes in the assumed timing and amount of revenue and expense estimates, changes in the probability of payment scenarios, changes in stock values, as well as changes in capital market conditions, which impact the discount rate used in the fair valuation. Significant judgment was employed in determining the appropriateness of these assumptions as of the acquisition date and for each subsequent reporting period.  We recognized $13.6 million and $24.1 million of contingent consideration charges during the three and nine months ended September 30, 2015, respectively.  As of December 31, 2015, the fair value of the contingent consideration was calculated by multiplying the expected earn-out shares to be distributed by our stock price at December 31, 2015. The fair value of the contingent consideration for the ShipStation acquisition was $63.2 million as of December 31, 2015, the final measurement date. No increases or decreases to the fair value of the contingent consideration were made following December 31, 2015 and prior to the second and final earn-out payment in the first quarter of 2016.

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2016

Commitments and Contingencies [Abstract]

Commitments and Contingencies

3. Commitments and Contingencies

Legal Proceedings

We are subject to various routine legal proceedings and claims incidental to our business, and we do not believe that these proceedings and claims would reasonably be expected to have a material adverse effect on our financial position, results of operations or cash flows.

Although management at present believes that the ultimate outcome of the various routine proceedings, individually and in the aggregate, will not materially harm our financial position, results of operations, cash flows, or overall trends, legal proceedings are subject to inherent uncertainties, and unfavorable rulings or other events could occur. An unfavorable outcome for an amount in excess of management’s present expectations may result in a material adverse impact on our business, results of operations, financial position, and overall trends.

Commitments

The following table is a schedule of our significant contractual obligations and commercial commitments (other than debt commitments), which consist only of future minimum lease payments under operating leases as of September 30, 2016 (in thousands):

Twelve Month Period Ending September 30,	Operating Lease Obligation
2017	$	3,845
2018		3,985
2019		1,626
2020		1,389
2021		1,204
Thereafter		198
Total	$	12,247

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Net Income (loss) per Share

9 Months Ended

Sep. 30, 2016

Net Income (loss) per Share [Abstract]

Net Income (loss) per Share

4. Net Income (loss) per Share

Net income (loss) per share represents net income (loss) attributable to common stockholders divided by the weighted average number of common shares outstanding during a reporting period. The diluted net income (loss) per share reflects the potential dilution that could occur if securities or other contracts to issue common stock, including stock options (commonly and hereafter referred to as “common stock equivalents”), were exercised or converted into common stock.  Diluted net income per share is calculated by dividing net income during a reporting period by the sum of the weighted average number of common shares outstanding plus common stock equivalents for the period.

The following table reconciles share amounts utilized to calculate basic and diluted net income (loss) per share (in thousands, except per share data):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Net income (loss)	$	18,672	$	7,274	$	46,201	$	(4,127	)
Basic - weighted average common shares		17,218		16,538		17,319		16,367
Diluted effect of common stock equivalents		902		979		1,006		—	(1)
Diluted - weighted average common shares		18,120		17,517		18,325		16,367
Earnings (loss) per share:
Basic	$	1.08	$	0.44	$	2.67	$	(0.25	)
Diluted	$	1.03	$	0.42	$	2.52	$	(0.25	)

(1) Common equivalent shares are excluded from the diluted net loss per share calculation as their effect is anti-dilutive.

The calculation of dilutive shares excludes the effect of the following options that are considered anti-dilutive (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Anti-dilutive stock options		514		64		269		2,990

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Stock-Based Employee Compensation

9 Months Ended

Sep. 30, 2016

Stock-Based Employee Compensation [Abstract]

Stock-Based Employee Compensation

5. Stock-Based Employee Compensation

We estimate the fair value of share-based payment awards on the date of grant using an option-pricing model and recognize stock-based compensation expense during each period based on the value of that portion of share-based payment awards that is ultimately expected to vest during the period, reduced for estimated forfeitures. We estimate forfeitures at the time of grant based on historical data and revise, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Compensation expense recognized for all employee stock options granted is recognized using the straight-line method over their respective vesting periods of up to five years. Starting in the third quarter of 2016, our stock-based compensation expense included performance based inducement equity awards relating to the ShippingEasy acquisition as described in Note 2 - Acquisitions.

The following table sets forth the stock-based compensation expense that we recognized for the periods indicated (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Stock-based compensation expense relating to:
Employee and director stock options	$	8,525	$	2,899	$	23,960	$	8,701
Employee stock purchases		297		162		795		403
Total stock-based compensation expense	$	8,822	$	3,061	$	24,755	$	9,104
Stock-based compensation expense relating to:
Cost of revenues	$	476	$	221	$	1,351	$	589
Sales and marketing		1,734		766		5,322		2,341
Research and development		1,916		641		4,696		1,806
General and administrative		4,696		1,433		13,386		4,368
Total stock-based compensation expense	$	8,822	$	3,061	$	24,755	$	9,104

We use the Black-Scholes-Merton option valuation model to estimate the fair value of share-based payment awards on the date of grant, which requires us to make a number of highly complex and subjective assumptions, including stock price volatility, expected term, risk-free interest rates and projected employee stock option exercise behaviors. In the case of options we grant, our assumption of expected volatility is based on the historical volatility of our stock price over the term equal to the expected life of the options. We base the risk-free interest rate on U.S. Treasury zero-coupon issues with a remaining term equal to the expected life of the options assumed at the date of grant.  The estimated expected life represents the weighted-average period the stock options are expected to remain outstanding, determined based on an analysis of historical exercise behavior.

The following are the weighted average assumptions used in the Black-Scholes valuation model for the periods indicated:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
Expected dividend yield		—			—			—			—
Risk-free interest rate		1.0	%		1.0	%		1.0	%		1.0	%
Expected volatility		47	%		46	%		48	%		46	%
Expected life (in years)		3.4			3.4			3.4			3.4
Expected forfeiture rate		6	%		6	%		6	%		6	%

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Goodwill and Intangible Assets

9 Months Ended

Sep. 30, 2016

Goodwill and Intangible Assets [Abstract]

Goodwill and Intangible Assets

6. Goodwill and Intangible Assets

Goodwill represents the excess of the fair value of consideration given over the fair value of the tangible assets, identifiable intangible assets and liabilities assumed in a business combination.

The following table summarizes goodwill as of December 31, 2015 and September 30, 2016 (in thousands):

	2016
Goodwill balance at December 31, 2015	$	197,807
Purchase price adjustment (see Note 2– “Acquisitions”)		945
Acquisition of ShippingEasy (see Note 2– “Acquisitions”)		40,780
Goodwill balance at September 30, 2016	$	239,532

Goodwill is reviewed for impairment annually on October 1^st utilizing a qualitative assessment or a two-step process.  We have an option to make a qualitative assessment of a reporting unit's goodwill for impairment.  If we choose to perform a qualitative assessment and determine the fair value more likely than not exceeds the carrying value, no further evaluation is necessary.  For reporting units where we perform the two-step process, the first step requires us to compare the fair value of each reporting unit, which we primarily determine using an income approach based on the present value of discounted cash flows, to the respective carrying value, which includes goodwill.  If the fair value of the reporting unit exceeds its carrying value, the goodwill is not considered impaired.  If the carrying value is higher than the fair value, there is an indication that impairment may exist and the second step is required.  In step two, the implied fair value of goodwill is calculated as the excess of the fair value of a reporting unit over the fair values assigned to its assets and liabilities.  If the implied fair value of goodwill is less than the carrying value of the reporting unit's goodwill, the difference is recognized as an impairment loss.

We have amortizable and non-amortizable intangible assets consisting of patents, trademarks, trade names, lease-in-place intangible assets, developed technology, non-compete agreements and customer relationships totaling approximately $125.4 million and $109.7 million in gross carrying amount as of September 30, 2016 and December 31, 2015, respectively.  Non-amortizable assets of $11.4 million consist primarily of trade name relating to the Endicia acquisition.

The following table summarizes our amortizable intangible assets as of September 30, 2016 (in thousands):

	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Patents and Others	$	8,889	$	8,763	$	126
Customer Relationships		60,816		9,696		51,120
Technology		40,048		4,801		35,247
Non-Compete		2,211		652		1,559
Trademark		2,004		398		1,606
Total amortizable intangible assets at September 30, 2016	$	113,968	$	24,310	$	89,658

We recorded amortization of intangible assets totaling approximately $10.5 million and $2.3 million for the nine months ended September 30, 2016 and 2015, respectively, which is included in general and administrative expense in our accompanying consolidated statements of operations.

As of September 30, 2016, the remaining weighted average amortization period for our amortizable intangible assets is approximately 5.8 years. Our estimated amortization expense for the next five years and thereafter is as follows (in thousands):

Twelve Month Period Ending September 30,	Estimated Amortization Expense
2017	$	16,038
2018		15,964
2019		15,623
2020		15,545
2021		14,422
Thereafter		12,066
Total	$	89,658

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Income Taxes

9 Months Ended

Sep. 30, 2016

Income Taxes [Abstract]

Income Taxes

7. Income Taxes

Our income tax expense was $12.1 million and $30 million for the three and nine months ended September 30, 2016, respectively.  Our tax expense was primarily attributable to our pre-tax income resulting in current tax expense consisting of federal alternative minimum tax and various state taxes and our deferred income tax expense for the utilization of net operating losses and other temporary differences. We had income tax expense of $5.8 million and income tax benefit of $90,000 during the three and nine months ended September 30, 2015, respectively.  Our income tax expense and tax benefit during the three and nine months ended September 30, 2015, respectively, were primarily attributable to our pre-tax income and pre-tax losses during those periods including deferred income taxes.  Our effective tax rate differs from statutory federal rate as a result of several factors including non-temporary differences and state and local income taxes. We evaluated the appropriateness of our deferred tax assets and related valuation allowance in accordance with ASC 740 based on all available positive and negative evidence.  As of September 30, 2016 and December 31, 2015, we do not have any valuation allowance against our deferred tax assets.

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Fair Value Measurements

9 Months Ended

Sep. 30, 2016

Fair Value Measurements [Abstract]

Fair Value Measurements

8. Fair Value Measurements

Financial assets measured at fair value on a recurring basis are classified in one of the three following categories, which are described below:

Level 1 - Valuations based on unadjusted quoted prices for identical assets in an active market

Level 2 - Valuations based on quoted prices in markets where trading occurs infrequently or whose values are based on quoted prices of instruments with similar attributes in active markets

Level 3 - Valuations based on inputs that are unobservable and involve management judgment and our own assumptions about market participants and pricing

The following table summarizes our financial assets measured at fair value on a recurring basis as of September 30, 2016 and December 31, 2015 (in thousands):

			Fair Value Measurement at Reporting Date Using
Description	September 30, 2016		Quoted Prices in Active Markets  for Identical Assets (Level 1)		Significant Other Observable  Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	81,144	$	81,144	$	—	$	—
Available-for-sale debt securities		3,029		—		3,029		—
Total	$	84,173	$	81,144	$	3,029	$	—

			Fair Value Measurement at Reporting Date Using
Description	December 31, 2015		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	65,126	$	65,126	$	—	$	—
Available-for-sale debt securities		10,082		—		10,082		—
Total	$	75,208	$	65,126	$	10,082	$	—

The fair value of our available-for-sale debt securities included in the Level 2 category is based on the market values obtained from an independent pricing service that were evaluated using pricing models that vary by asset class and may incorporate available trade, bid and other market information and price quotes from well-established independent pricing vendors and broker-dealers.

As of December 31, 2015 we had $63.2 million of contingent consideration relating to our acquisition of ShipStation that was required to be measured at fair value using quoted prices in active markets (level 1) because the contingencies had been resolved as of that date. As of September 30, 2016, we had no contingent consideration.

The following table summarizes our contingent consideration measured at fair value on a recurring basis (in thousands):

			Fair Value Measurement at Reporting Date Using
Description	December 31, 2015		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable  Inputs (Level 3)
Contingent consideration – current	$	63,209	$	63,209	$	—	$	—

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Cash, Cash Equivalents and Investments

9 Months Ended

Sep. 30, 2016

Cash, Cash Equivalents and Investments [Abstract]

Cash, Cash Equivalents and Investments

9. Cash, Cash Equivalents and Investments

Our cash equivalents and investments consist of money market, U.S. government obligations, asset-backed securities, and public corporate debt securities at September 30, 2016 and December 31, 2015. We consider all highly liquid investments with an original or remaining maturity of three months or less at the date of purchase to be cash equivalents. All of our investments are classified as available for sale and are recorded at market value using the specific identification method. Realized gains and losses are reflected in other income, net using the specific identification method.  There was no material realized gain or loss with respect to our investments during the three and nine months ended September 30, 2016. Unrealized gains and losses are included as a separate component of stockholders' equity.  We do not intend to sell investments with an amortized cost basis exceeding fair value and it is not likely that we will be required to sell the investments before recovery of their amortized cost bases. We have 3 securities with a total fair value of $27,000 that have unrealized losses of approximately $2,000 as of September 30, 2016.

On at least a quarterly basis, we evaluate our available for sale securities, and record an “other-than-temporary impairment” (“OTTI”) if we believe their fair value is less than historical cost and it is probable that we will not collect all contractual cash flows. We did not record any OTTI during the three and nine months ended September 30, 2016, after evaluating a number of factors including, but not limited to:

· How much fair value has declined below amortized cost

· The financial condition of the issuers

· Significant rating agency changes on the issuer

· Our intent and ability to hold the security for a period of time sufficient to allow for any anticipated recovery in fair value

The following tables summarize our cash, cash equivalents and investments as of September 30, 2016 and December 31, 2015 (in thousands):

	September 30, 2016
	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Cash and cash equivalents:
Cash	$	77,726		—		—		$	77,726
Money market		3,418		—		—			3,418
Total cash and cash equivalents		81,144		—		—			81,144
Short-term investments:
Corporate bonds and asset backed securities		3,014		18		(3	)		3,029
Total short-term investments		3,014		18		(3	)		3,029
Long-term investments:
Corporate bonds and asset backed securities		—		—		—			—
Total long-term investments		—		—		—			—
Cash, cash equivalents and investments	$	84,158		18		(3	)	$	84,173

	December 31, 2015
	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Cash and cash equivalents:
Cash	$	63,593		—		—		$	63,593
Money market		1,533		—		—			1,533
Total cash and cash equivalents		65,126		—		—			65,126
Short-term investments:
Corporate bonds and asset backed securities		8,549		7		(3	)		8,553
Total short-term investments		8,549		7		(3	)		8,553
Long-term investments:
Corporate bonds and asset backed securities		1,515		17		(3	)		1,529
Total long-term investments		1,515		17		(3	)		1,529
Cash, cash equivalents and investments	$	75,190		24		(6	)	$	75,208

The following table summarizes contractual maturities of our marketable fixed-income securities as of September 30, 2016 (in thousands):

	Amortized Cost		Estimated Fair Value
Due within one year	$	3,014	$	3,029
Due after one year		—		—
Total	$	3,014	$	3,029

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Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2016

Summary of Significant Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

We prepared the consolidated financial statements included herein pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with United States (“U.S.”) generally accepted accounting principles (“GAAP”) have been condensed or omitted pursuant to such rules and regulations. We believe that the disclosures are adequate to make the information presented not misleading. We recommend that these financial statements be read in conjunction with the audited financial statements and the notes thereto included in our latest annual report on Form 10-K for the fiscal year ended December 31, 2015, filed with the SEC on February 29, 2016.

In our opinion, these unaudited financial statements contain all adjustments (consisting of normal recurring adjustments) necessary to present fairly our financial position as of September 30, 2016, our results of operations for the three and nine months ended September 30, 2016 and our cash flows for the nine months ended September 30, 2016.  The results of operations for the interim period are not necessarily indicative of the results that may be expected for the year ending December 31, 2016.

Principles of Consolidation

Principles of Consolidation

The consolidated financial statements include the accounts of Stamps.com Inc., Auctane LLC, Interapptive, Inc., PSI Systems Inc., ShippingEasy Group, Inc., and PhotoStamps Inc.  In June 2014, we completed our acquisition of 100% of the outstanding equity of Auctane LLC, the Texas limited liability company that operates ShipStation (“Auctane LLC” or “ShipStation”) in a cash and contingent stock transaction.  ShipStation, based in Austin, Texas, offers monthly subscription based e-commerce shipping software primarily under the brands ShipStation and Auctane.  In August 2014, we completed our acquisition of 100% of the outstanding equity of Interapptive, Inc., a Missouri corporation, that operates ShipWorks (“Interapptive, Inc.” or “ShipWorks”) in a cash transaction.  ShipWorks, based in St. Louis, Missouri, offers monthly subscription based e-commerce shipping software.  In November 2015, we completed our acquisition of 100% of the outstanding shares of PSI Systems, Inc. (“Endicia”).  Endicia, based in Palo Alto, California, is a leading provider of high volume shipping technologies and solutions for shipping with the United States Postal Service (“USPS”). In July 2016, we completed our acquisition of 100% of the outstanding shares of ShippingEasy Group, Inc. (“ShippingEasy”).  ShippingEasy, based in Austin, Texas, offers web-based multi-carrier shipping software that allows online retailers and e-commerce merchants to organize, process, fulfill and ship their orders quickly and easily. See Note 2– “Acquisitions” for further discussion of our acquisitions.

Because 100% of the voting control of Auctane LLC, Interapptive, Inc. PSI Systems, Inc., and ShippingEasy Group, Inc. is held by us, we have consolidated ShipStation, ShipWorks, Endicia and ShippingEasy from the date we obtained control in the accompanying consolidated financial statements. Similarly, due to our 100% control of PhotoStamps, Inc., PhotoStamps Inc. is also consolidated in the accompanying consolidated financial statements from the date of its inception. All significant intercompany accounts and transactions have been eliminated.

Use of Estimates and Risk Management

Use of Estimates and Risk Management

The preparation of financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the amounts reported in the financial statements and the accompanying notes.  Actual results could differ from those estimates, and such differences may be material to the financial statements. Examples include estimates of loss contingencies, promotional coupon redemptions, the number of PhotoStamps retail boxes that will not be redeemed, realizability of deferred income taxes, the estimates and assumptions used to calculate stock-based compensation, the estimates and assumptions used to calculate the allocation of the purchase price related to our acquisitions, including related contingent consideration, and estimates regarding the useful lives of our building, patents and other amortizable intangible assets, and goodwill.

Contingencies and Litigation

Contingencies and Litigation

We are subject to various routine litigation matters as a claimant and a defendant. We record any amounts recovered in these matters when received. We establish loss provisions for claims against us when the loss is both probable and can be reasonably estimated.  If either or both of the criteria are not met, we assess whether there is at least a reasonable possibility that a loss, or additional losses, may have been incurred. If there is a reasonable possibility that a loss or additional loss may have been incurred for such proceedings, we disclose the estimate of the amount of loss or possible range of loss, or disclose that an estimate of loss cannot be made, as applicable.

Fair Value of Financial Instruments

Fair Value of Financial Instruments

Carrying amounts of certain of our financial instruments, including cash, cash equivalents, accounts receivable and accounts payable, approximate fair value due to their short maturities. The fair values of investments are determined using quoted market prices for those securities or similar financial instruments.  The fair value of our debt approximates book value.

In 2015 the fair value of the contingent consideration related to our acquisition of ShipStation was determined based on a probability weighted method, which incorporated management’s forecasts of financial measures related to ShipStation and the likelihood of the financial measure targets related to such acquisition being achieved using a series of options that replicated the pay-off structure of the earn-out, and the value of each of these options was determined using the Black-Scholes-Merton option pricing framework.  Changes in the fair value of the contingent consideration obligations resulted from changes in the assumed timing and amount of revenue and expense estimates, changes in the probability of payment scenarios, changes in stock values, as well as changes in capital market conditions, which impacted the discount rate used in the fair valuation. Significant judgment was employed in determining the appropriateness of these assumptions as of the acquisition date and for each subsequent reporting period during 2015. See Note 2 – “Acquisitions” for a further description of the contingent consideration relating to ShipStation.

Property and Equipment

Property and Equipment

We account for property and equipment at cost less accumulated depreciation and amortization. We compute depreciation using the straight-line method over the estimated useful life of the asset, generally three to five years for furniture, fixtures and equipment and ten to forty years for building and building improvements. We have a policy of capitalizing expenditures that materially increase assets’ useful lives and charging ordinary maintenance and repairs to operations as incurred. When property or equipment is disposed of, the cost and related accumulated depreciation and amortization are removed, and any gain or loss is included in operations.

Business Combinations

Business Combinations

The acquisition method of accounting is used for business combinations. The results of operations of acquired businesses are included in our consolidated financial statements prospectively from the date of acquisition. The fair value of purchase consideration is allocated to the assets acquired and liabilities assumed from the acquired entity and is generally based on their fair value at the acquisition date. The excess of the fair value of purchase consideration over the fair value of the assets acquired and liabilities assumed is recorded as goodwill. Historically the primary items that have generated goodwill include anticipated synergies between the acquired business and the Company and the acquired assembled workforce, neither of which qualifies for recognition as an intangible asset. Acquisition-related expenses are recognized in our consolidated financial statements as incurred.

Goodwill

Goodwill

Goodwill represents the excess of the fair value of consideration given over the fair value of the tangible assets, identifiable intangible assets and liabilities assumed in a business combination.  We are required to test goodwill for impairment annually and whenever events or circumstances indicate the fair value of a reporting unit may be below its carrying value.  Goodwill is reviewed for impairment annually on October 1. A reporting unit is the operating segment or a business that is one level below that operating segment. Reporting units are aggregated as a single reporting unit if they have similar economic characteristics. As of September 30, 2016, we are not aware of any indicators of impairment that would require an impairment analysis other than our annual impairment analysis.

Trademarks, Patents and Intangible Assets

Trademarks, Patents and Intangible Assets

Acquired trademarks, patents and other intangibles include both amortizable and non-amortizable assets and are included in intangible assets, net in the accompanying consolidated balance sheets. Intangible assets are carried at cost less accumulated amortization. Cost associated with internally developed intangible assets is typically expensed as incurred as research and development costs.  Amortization of amortizable intangible assets is calculated on a straight-line basis, which is consistent with expected future cash flows.

Impairment of Long-Lived Assets and Intangible Assets

Impairment of Long-Lived Assets and Intangible Assets

Long-lived assets including intangible assets with finite useful lives are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to future net cash flows expected to be generated by the asset.  If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets.  Assets to be disposed of are reported at the lower of the carrying amount or fair value less costs to sell.

Intangible assets that have indefinite useful lives are not amortized but, instead, tested at least annually for impairment while intangible assets that have finite useful lives continue to be amortized over their respective useful lives.

Deferred Revenue

Deferred Revenue

Our deferred revenue relates mainly to service revenue and PhotoStamps retail boxes.  Deferred revenue related to our service revenue generally arises due to the timing of payment versus the provision of services for certain customers billed in advance.  We previously sold PhotoStamps retail boxes to our customers through our website and selected third parties.  Proceeds from the sale of our PhotoStamps retail boxes were initially recorded as a liability when received. We recorded the liability for outstanding PhotoStamps retail boxes in deferred revenue. We no longer sell PhotoStamps retail boxes.

Revenue Recognition

Revenue Recognition

We recognize revenue from product sales or services rendered, as well as commissions from advertising or sale of products by third party vendors to our customer base when the following four revenue recognition criteria are met: persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the selling price is fixed or determinable, and collectability is reasonably assured.

Service revenue is primarily derived from monthly service fees and transaction related revenues from our USPS mailing and shipping services, our multi-carrier shipping services and our mailing and shipping integrations, and is recognized in the period that services are provided. Product sales, net of return allowances, are recorded when the products are shipped and title passes to customers. Sales of items, including customized postage, sold to customers are made pursuant to a sales contract that provides for transfer of both title and risk of loss upon our delivery to the carrier. Return allowances for expected product returns, which reduce product revenue, are estimated using historical experience. Commissions from the advertising or sale of products by a third party vendor to our customer base are recognized when the revenue is earned and collection is deemed probable.

Customers purchase postage through our mailing and shipping solutions.  If the postage purchase funds are transferred directly from the customers to the USPS, we do not recognize revenue for this postage, as it is purchased by our customers directly from the USPS.

Customized postage revenue, which includes the face value of postage, from the sale of PhotoStamps and PictureItPostage sheets and rolls is made pursuant to a sales contract that provides for transfer of both title and risk of loss upon our delivery to the carrier and revenue is recognized at that time. Sale of PhotoStamps retail boxes are initially recorded as deferred revenue.  PhotoStamps revenue related to the sale of these PhotoStamps retail boxes is subsequently recognized when either: 1) the PhotoStamps retail box is redeemed; or 2) the likelihood of the PhotoStamps retail box being redeemed is deemed remote (“breakage”) and there is no legal obligation to remit the value of the unredeemed PhotoStamps retail boxes.

On a limited basis, we allow third parties to offer products and promotions to our customer base. These arrangements generally provide payment in the form of a flat fee or revenue sharing arrangements where we receive payment upon customers accessing third party products and services. During the three and nine months ended September 30, 2016 and 2015 revenue from such advertising arrangements was not significant.

We provide our customers with the opportunity to purchase parcel insurance directly through our solutions. Insurance revenue represents the gross amount charged to the customer for purchasing insurance and the related cost represents the amount paid to our insurance brokers. We recognize revenue on insurance purchases upon the ship date of the insured package.

PhotoStamps Retail Boxes

PhotoStamps Retail Boxes

We previously sold PhotoStamps retail boxes that are redeemable for PhotoStamps on our website.  The PhotoStamps retail boxes were sold through various third party retail partners. We no longer sell PhotoStamps retail boxes. Our PhotoStamps retail boxes are not subject to administrative fees on unredeemed boxes and have no expiration date.  PhotoStamps retail box sales were recorded as deferred revenue.  We concluded that sufficient company-specific historical evidence existed to determine the period of time after which the likelihood of the PhotoStamps retail boxes being redeemed was remote.  Based on our analysis of the redemption data, we estimate that period of time to be 60 months after the sale of our PhotoStamps retail boxes.

We recognize breakage revenue related to our PhotoStamps retail boxes utilizing the redemption recognition method. Under the redemption recognition method, we recognize breakage revenue from unredeemed retail boxes in proportion to the revenue recognized from the retail boxes that have been redeemed.  Revenue from our PhotoStamps retail boxes is included in Customized postage revenue. PhotoStamps retail box breakage revenue was not significant during the three and nine months ended September 30, 2016 and 2015.

Income Taxes

Income Taxes

We account for income taxes in accordance with Financial Accounting Standards Board (“FASB”) ASC Topic No. 740, Income Taxes (“ASC 740”), which requires that deferred tax assets and liabilities be recognized using enacted tax rates for the effect of temporary differences between the book and tax basis of recorded assets and liabilities. ASC 740 also requires that deferred tax assets be reduced by a valuation allowance if it is more likely than not that some or all of the net deferred tax assets will not be realized. We record a valuation allowance to reduce our gross deferred tax assets, which are primarily comprised of U.S. Federal and State tax loss carry-forwards, to the amount that is more likely than not (a likelihood of more than 50 percent) to be realized.  In order for us to realize our deferred tax assets, we must be able to generate sufficient taxable income. We evaluate the appropriateness of our deferred tax assets and related valuation allowance in accordance with ASC 740 based on all available positive and negative evidence. As of September 30, 2016 and December 31, 2015 we do not have any valuation allowance recorded to reduce our gross deferred tax assets as we believe we have met the more likely than not threshold and we will realize our tax loss carry-forwards in the foreseeable future.

Short-Term Financing Obligation

Short-Term Financing Obligation

We utilize short-term financing, which is separate from our debt, to fund certain company operations.  Short-term financing is included in accrued expenses.  As of September 30, 2016 we had $16 million in short-term financing obligations and $120 million of unused credit.  As of December 31, 2015 we had $13.3 million in short-term financing obligations and $34.2 million of unused credit.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers ("ASU 2014-09") an updated standard on revenue recognition. This ASU will supersede the revenue recognition requirements in Accounting Standards Codification Topic 605, Revenue Recognition, and most industry-specific guidance.  ASU 2014-09 provides enhancements to the quality and consistency of how revenue is reported while also improving comparability in the financial statements of companies reporting using US GAAP and International Financial Reporting Standards.  The core principle of the new standard is for companies to recognize revenue to depict the transfer of goods or services to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so the companies may be required to use more judgment and make more estimates than under current authoritative guidance. ASU 2014-09 will be effective for the Company in the first quarter of fiscal 2018 and may be applied on a full retrospective or modified retrospective approach. The Company is currently evaluating the impact the adoption of this standard will have on its consolidated financial statements.

In April 2015, the FASB issued guidance to help entities evaluate whether fees paid in a cloud computing arrangement include a software license. Pursuant to this guidance, when a cloud computing arrangement includes a software license, the customer accounts for the software license element of the arrangement consistent with the acquisition of other software licenses. When a cloud computing arrangement does not include a software license element, the customer accounts for the arrangement as a service contract. The prospective adoption of this guidance on January 1, 2016 did not have a material effect on the Consolidated Financial Statements.

In November 2015, the FASB issued guidance that requires deferred tax assets and liabilities to be presented as noncurrent in a classified statement of financial position. The guidance is effective beginning January 1, 2017, with early adoption permitted. The guidance can be applied prospectively or retrospectively. The Company elected to early adopt the requirements and apply them retrospectively as of December 31, 2015.

In February 2016, the FASB issued a new accounting standard for leases. The new standard generally requires the recognition of financing and operating lease liabilities and corresponding right-of-use assets on the balance sheet. For financing leases, a lessee recognizes amortization of the right-of-use asset as an operating expense over the lease term separately from interest on the lease liability. For operating leases, a lessee recognizes its total lease expense as an operating expense over the lease term. The amendments are effective for the Company in the first quarter of 2019 using a modified retrospective approach with early adoption permitted. The Company is currently evaluating the impact the adoption of this standard will have on its consolidated financial statements.

In March 2016, the FASB simplified certain areas of accounting for stock-based compensation, including accounting for the income tax consequences of stock-based compensation, determining the classification of awards as either equity or liabilities, classifying certain items within the statement of cash flows and introducing an accounting policy election to account for forfeitures of non-vested awards as they occur. The simplified guidance is effective for the Company in the first quarter of 2017. Depending on the area simplified, the guidance is effective either prospectively, retrospectively or using a modified retrospective approach. Early adoption is permitted. The Company is evaluating the effect of adoption on its Consolidated Financial Statements.

Subsequent Events

Subsequent Events

We are not aware of any material subsequent events or transactions that have occurred that would require recognition in the financial statements or disclosure in the notes to the financial statements.

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Acquisitions (Tables)

9 Months Ended

Sep. 30, 2016

ShippingEasy [Member]

Business Acquisition [Line Items]

Allocation of the purchase price

The following table is the allocation of the preliminary purchase price (in thousands, except years):

	Fair Value			Fair Value			Useful Life (In Years)		Weighted Average Estimated Useful Life (In Years)
Trade accounts receivable	$	1,194
Other assets		76
Property and equipment		40
Goodwill		40,780
Identifiable intangible assets:
Trade name					$	1,304		8
Developed technology						6,948		5
Customer relationship						6,316		5
Non-compete agreements						1,111		3 to 5
Total identifiable intangible assets		15,679								5
Accrued expenses and other liabilities		(707	)
Deferred revenue		(185	)
Deferred tax liability		(1,430	)
Total purchase price	$	55,447

Pro forma financial information

The following table presents the pro-forma financial information (in thousands, except per share amounts) and assumes the acquisition of ShippingEasy occurred on January 1, 2015:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Revenues	$	92,559	$	53,133	$	264,664	$	147,517
Income from operations		31,702		12,143		80,137		(7,580	)
Net income		18,744		6,705		46,846		(6,192	)
Basic earnings per share	$	1.09	$	0.41	$	2.70	$	(0.38	)
Diluted earnings per share	$	1.03	$	0.38	$	2.56	$	(0.38	)

Endicia [Member]

Business Acquisition [Line Items]

Allocation of the purchase price

The following table sets forth the final allocation of the purchase price (in thousands, except years):

	Fair Value			Fair Value		Useful Life (In Years)		Weighted Average Estimated Useful Life  (In Years)
Trade accounts receivable	$	10,247
Other assets		771
Property and equipment		2,798
Goodwill		131,860
Identifiable intangible assets:
Trade name				$	10,900		Indefinite
Developed technology					26,100		9
Customer relationship					43,200		6
Total identifiable intangible assets		80,200							7
Accrued expenses and other liabilities		(10,212	)
Deferred revenue		(926	)
Total purchase price	$	214,738

ShipWorks [Member]

Business Acquisition [Line Items]

Schedule of purchase price

The total purchase price for ShipWorks was approximately $22.1 million and was comprised of the following (in thousands):

	Fair Value
Cash consideration	$	21,952
Deferred consideration		181
Total purchase price	$	22,133

Allocation of the purchase price

The following table sets forth the final allocation of the purchase price (in thousands, except years):

	Fair Value			Fair Value		Useful Life (In Years)		Weighted Average Estimated Useful Life  (In Years)
Cash and cash equivalents	$	803
Trade accounts receivable		353
Other assets		21
Property and equipment		1,091
Goodwill		16,349
Identifiable intangible assets:
Trademark				$	200		6
Developed technology					1,700		7
Non-compete agreement					700		4
Customer relationship					2,300		6
Total identifiable intangible assets		4,900							6
Accrued expenses and other liabilities		(1,119	)
Deferred revenue		(265	)
Total purchase price	$	22,133

ShipStation [Member]

Business Acquisition [Line Items]

Schedule of purchase price

The total purchase price for ShipStation was approximately $66.2 million and was comprised of the following (in thousands, except shares):

	Fair Value
Cash consideration	$	50,000
Fair value of performance linked earn-out of up to 768,900 shares of   Stamps.com common stock (contingent consideration)		16,242
Total purchase price	$	66,242

Allocation of the purchase price

The following table sets forth the final allocation of the purchase price (in thousands, except years):

	Fair Value			Fair Value		Useful Life (In Years)		Weighted Average Estimated Useful Life (In Years)
Cash and cash equivalents	$	1,117
Trade accounts receivable		254
Other assets		39
Property and equipment		187
Goodwill		50,544
Identifiable intangible assets:
Trademark				$	500		4
Developed technology					5,300		8
Non-compete agreement					400		4
Customer relationship					9,000		8
Total identifiable intangible assets		15,200							8
Accrued expenses and other liabilities		(835	)
Deferred revenue		(264	)
Total purchase price	$	66,242

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Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2016

Commitments and Contingencies [Abstract]

Future minimum lease payment under operating leases

The following table is a schedule of our significant contractual obligations and commercial commitments (other than debt commitments), which consist only of future minimum lease payments under operating leases as of September 30, 2016 (in thousands):

Twelve Month Period Ending September 30,	Operating Lease Obligation
2017	$	3,845
2018		3,985
2019		1,626
2020		1,389
2021		1,204
Thereafter		198
Total	$	12,247

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Net Income (loss) per Share (Tables)

9 Months Ended

Sep. 30, 2016

Net Income (loss) per Share [Abstract]

Calculation of basic and diluted net income (loss) per share

The following table reconciles share amounts utilized to calculate basic and diluted net income (loss) per share (in thousands, except per share data):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Net income (loss)	$	18,672	$	7,274	$	46,201	$	(4,127	)
Basic - weighted average common shares		17,218		16,538		17,319		16,367
Diluted effect of common stock equivalents		902		979		1,006		—	(1)
Diluted - weighted average common shares		18,120		17,517		18,325		16,367
Earnings (loss) per share:
Basic	$	1.08	$	0.44	$	2.67	$	(0.25	)
Diluted	$	1.03	$	0.42	$	2.52	$	(0.25	)

(1) Common equivalent shares are excluded from the diluted net loss per share calculation as their effect is anti-dilutive.

Anti-dilutive securities excluded from computation of earnings per share

The calculation of dilutive shares excludes the effect of the following options that are considered anti-dilutive (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Anti-dilutive stock options		514		64		269		2,990

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Stock-Based Employee Compensation (Tables)

9 Months Ended

Sep. 30, 2016

Stock-Based Employee Compensation [Abstract]

Stock-based compensation expense

The following table sets forth the stock-based compensation expense that we recognized for the periods indicated (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Stock-based compensation expense relating to:
Employee and director stock options	$	8,525	$	2,899	$	23,960	$	8,701
Employee stock purchases		297		162		795		403
Total stock-based compensation expense	$	8,822	$	3,061	$	24,755	$	9,104
Stock-based compensation expense relating to:
Cost of revenues	$	476	$	221	$	1,351	$	589
Sales and marketing		1,734		766		5,322		2,341
Research and development		1,916		641		4,696		1,806
General and administrative		4,696		1,433		13,386		4,368
Total stock-based compensation expense	$	8,822	$	3,061	$	24,755	$	9,104

Weighted average assumptions used in Black-Scholes valuation model

The following are the weighted average assumptions used in the Black-Scholes valuation model for the periods indicated:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
Expected dividend yield		—			—			—			—
Risk-free interest rate		1.0	%		1.0	%		1.0	%		1.0	%
Expected volatility		47	%		46	%		48	%		46	%
Expected life (in years)		3.4			3.4			3.4			3.4
Expected forfeiture rate		6	%		6	%		6	%		6	%

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Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2016

Goodwill and Intangible Assets [Abstract]

Schedule of goodwill

The following table summarizes goodwill as of December 31, 2015 and September 30, 2016 (in thousands):

	2016
Goodwill balance at December 31, 2015	$	197,807
Purchase price adjustment (see Note 2– “Acquisitions”)		945
Acquisition of ShippingEasy (see Note 2– “Acquisitions”)		40,780
Goodwill balance at September 30, 2016	$	239,532

Schedule of acquired intangible assets

The following table summarizes our amortizable intangible assets as of September 30, 2016 (in thousands):

	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Patents and Others	$	8,889	$	8,763	$	126
Customer Relationships		60,816		9,696		51,120
Technology		40,048		4,801		35,247
Non-Compete		2,211		652		1,559
Trademark		2,004		398		1,606
Total amortizable intangible assets at September 30, 2016	$	113,968	$	24,310	$	89,658

Schedule of future amortization expense

Our estimated amortization expense for the next five years and thereafter is as follows (in thousands):

Twelve Month Period Ending September 30,	Estimated Amortization Expense
2017	$	16,038
2018		15,964
2019		15,623
2020		15,545
2021		14,422
Thereafter		12,066
Total	$	89,658

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2016

Fair Value Measurements [Abstract]

Financial assets measured at fair value on a recurring basis

The following table summarizes our financial assets measured at fair value on a recurring basis as of September 30, 2016 and December 31, 2015 (in thousands):

			Fair Value Measurement at Reporting Date Using
Description	September 30, 2016		Quoted Prices in Active Markets  for Identical Assets (Level 1)		Significant Other Observable  Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	81,144	$	81,144	$	—	$	—
Available-for-sale debt securities		3,029		—		3,029		—
Total	$	84,173	$	81,144	$	3,029	$	—

			Fair Value Measurement at Reporting Date Using
Description	December 31, 2015		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents	$	65,126	$	65,126	$	—	$	—
Available-for-sale debt securities		10,082		—		10,082		—
Total	$	75,208	$	65,126	$	10,082	$	—

Contingent consideration measured at fair value on a recurring basis

The following table summarizes our contingent consideration measured at fair value on a recurring basis (in thousands):

			Fair Value Measurement at Reporting Date Using
Description	December 31, 2015		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable  Inputs (Level 3)
Contingent consideration – current	$	63,209	$	63,209	$	—	$	—

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Cash, Cash Equivalents and Investments (Tables)

9 Months Ended

Sep. 30, 2016

Cash, Cash Equivalents and Investments [Abstract]

Summary of cash, cash equivalents and investments

The following tables summarize our cash, cash equivalents and investments as of September 30, 2016 and December 31, 2015 (in thousands):

	September 30, 2016
	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Cash and cash equivalents:
Cash	$	77,726		—		—		$	77,726
Money market		3,418		—		—			3,418
Total cash and cash equivalents		81,144		—		—			81,144
Short-term investments:
Corporate bonds and asset backed securities		3,014		18		(3	)		3,029
Total short-term investments		3,014		18		(3	)		3,029
Long-term investments:
Corporate bonds and asset backed securities		—		—		—			—
Total long-term investments		—		—		—			—
Cash, cash equivalents and investments	$	84,158		18		(3	)	$	84,173

	December 31, 2015
	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Cash and cash equivalents:
Cash	$	63,593		—		—		$	63,593
Money market		1,533		—		—			1,533
Total cash and cash equivalents		65,126		—		—			65,126
Short-term investments:
Corporate bonds and asset backed securities		8,549		7		(3	)		8,553
Total short-term investments		8,549		7		(3	)		8,553
Long-term investments:
Corporate bonds and asset backed securities		1,515		17		(3	)		1,529
Total long-term investments		1,515		17		(3	)		1,529
Cash, cash equivalents and investments	$	75,190		24		(6	)	$	75,208

Contractual maturities of marketable fixed-income securities

The following table summarizes contractual maturities of our marketable fixed-income securities as of September 30, 2016 (in thousands):

	Amortized Cost		Estimated Fair Value
Due within one year	$	3,014	$	3,029
Due after one year		—		—
Total	$	3,014	$	3,029

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Summary of Significant Accounting Policies, Principles of Consolidation and Contingent Consideration (Details)	Sep. 30, 2016	Jul. 02, 2016	Nov. 30, 2015	Aug. 29, 2014	Jun. 10, 2014
ShippingEasy [Member]
Principles of Consolidation [Abstract]
Percentage of outstanding equity purchased		100.00%
ShipStation [Member]
Principles of Consolidation [Abstract]
Percentage of outstanding equity purchased					100.00%
Percentage of voting control	100.00%
ShipWorks [Member]
Principles of Consolidation [Abstract]
Percentage of outstanding equity purchased				100.00%
Endicia [Member]
Principles of Consolidation [Abstract]
Percentage of outstanding equity purchased			100.00%
PhotoStamps Inc [Member]
Principles of Consolidation [Abstract]
Percentage of voting control	100.00%

XML

Summary of Significant Accounting Policies, Property, Plant and Equipment (Details)	3 Months Ended
	Sep. 30, 2016
Furniture, Fixtures and Equipment [Member] | Minimum [Member]
Property and Equipment [Abstract]
Estimated useful life	3 years
Furniture, Fixtures and Equipment [Member] | Maximum [Member]
Property and Equipment [Abstract]
Estimated useful life	5 years
Building and Building Improvements [Member] | Minimum [Member]
Property and Equipment [Abstract]
Estimated useful life	10 years
Building and Building Improvements [Member] | Maximum [Member]
Property and Equipment [Abstract]
Estimated useful life	40 years

XML

Summary of Significant Accounting Policies, Income Taxes through Short-Term Financing Obligation (Details) $ in Millions	9 Months Ended
	Sep. 30, 2016 USD ($) Criteria	Dec. 31, 2015 USD ($)
Revenue Recognition [Abstract]
Number of criteria to be met for recognition of revenue | Criteria	4
PhotoStamps Retail Boxes [Abstract]
Period of redemption of PhotoStamps retail boxes	60 months
Short- Term Financing Obligation [Abstract]
Short-term financing obligation	$ 16.0	$ 13.3
Unused credits	$ 120.0	$ 34.2

XML

Acquisitions (Details)						3 Months Ended					9 Months Ended			12 Months Ended
	Jul. 02, 2016 USD ($) Employees shares	Nov. 18, 2015 USD ($)	Mar. 22, 2015 USD ($)	Sep. 10, 2014 USD ($)	Aug. 29, 2014 USD ($) ShoppingCarts	Sep. 30, 2016 USD ($) $ / shares	Mar. 31, 2016 USD ($) shares	Sep. 30, 2015 USD ($) $ / shares	Mar. 31, 2015 shares	Dec. 31, 2014 USD ($)	Sep. 30, 2016 USD ($) $ / shares	Sep. 30, 2015 USD ($) $ / shares	Dec. 31, 2014 shares	Dec. 31, 2015 USD ($) shares	Nov. 30, 2015	Jun. 10, 2014 ShoppingCarts
Business Acquisition [Line Items]
Stock-based compensation expense						$ 8,822,000		$ 3,061,000			$ 24,755,000	$ 9,104,000
Purchase price [Abstract]
Cash consideration											573,000	0
Debt issuance costs						111,000					604,000
Goodwill adjustments											945,000
Allocation of purchase price [Abstract]
Goodwill						239,532,000					239,532,000			$ 197,807,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Amortization of acquired intangible assets per quarter											$ 10,500,000	2,300,000
Maximum [Member]
Business Acquisition [Line Items]
Option vesting period											5 years
ShippingEasy [Member]
Business Acquisition [Line Items]
Percentage of voting interests acquired	100.00%
Percentage of awards subject to proration	75.00%
Earnings target percentage											100.00%
Stock-based compensation expense						$ 946,000
Stock-based compensation expense, percentage						50.00%
Shares granted for number of new employees | Employees	48
Vesting term	10 years
Purchase price [Abstract]
Cash consideration	$ 55,000,000
Allocation of purchase price [Abstract]
Trade accounts receivable	1,194,000
Other assets	76,000
Property and equipment	40,000
Goodwill	40,780,000
Identifiable intangible assets	15,679,000
Accrued expenses and other liabilities	(707,000)
Deferred revenue	(185,000)
Deferred tax liability	(1,430,000)
Total purchase price	$ 55,447,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life	5 years
Discount rate of net cash flows to their present values	23.00%
Amortization of acquired intangible assets per quarter	$ 761,000
Pro-Forma Financial Information [Abstract]
Revenues						$ 92,559,000		53,133,000			$ 264,664,000	147,517,000
Income from operations						31,702,000		12,143,000			80,137,000	(7,580,000)
Net income						$ 18,744,000		$ 6,705,000			$ 46,846,000	$ (6,192,000)
Basic earnings per share (in dollars per share) | $ / shares						$ 1.09		$ 0.41			$ 2.70	$ (0.38)
Diluted earnings per share (in dollars per share) | $ / shares						$ 1.03		$ 0.38			$ 2.56	$ (0.38)
ShippingEasy [Member] | Trademark [Member]
Allocation of purchase price [Abstract]
Identifiable intangible assets	1,304,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life											8 years
ShippingEasy [Member] | Developed Technology [Member]
Allocation of purchase price [Abstract]
Identifiable intangible assets	6,948,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life											5 years
ShippingEasy [Member] | Non-Compete Agreement [Member]
Allocation of purchase price [Abstract]
Identifiable intangible assets	$ 1,111,000
ShippingEasy [Member] | Non-Compete Agreement [Member] | Minimum [Member]
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life	3 years
ShippingEasy [Member] | Non-Compete Agreement [Member] | Maximum [Member]
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life	5 years
ShippingEasy [Member] | Customer Relationship [Member]
Allocation of purchase price [Abstract]
Identifiable intangible assets	$ 6,316,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life											5 years
ShippingEasy [Member] | General Manager and Chief Technology Officer [Member] | Maximum [Member]
Business Acquisition [Line Items]
Aggregate shares issued (in shares) | shares	43,567
ShippingEasy [Member] | New Employee [Member]
Business Acquisition [Line Items]
Aggregate shares issued (in shares) | shares	62,000
ShippingEasy [Member] | Vesting Option One [Member]
Business Acquisition [Line Items]
Percentage of options vesting	25.00%
Option vesting period	1 year
ShippingEasy [Member] | Vesting Option Two [Member]
Business Acquisition [Line Items]
Percentage of options vesting	75.00%
Option vesting period	39 months
Endicia [Member]
Business Acquisition [Line Items]
Percentage of voting interests acquired															100.00%
Purchase price [Abstract]
Cash consideration		$ 214,200,000	$ 215,000,000
Debt issuance costs		1,500,000
Debt issuance costs including costs incurred prior to closing		1,800,000
Costs incurred prior to closing		300,000
Maturity date						Nov. 18, 2020
Available and unused borrowings under the revolving credit facility						$ 10,000,000					$ 10,000,000
Goodwill adjustments							$ 945,000
Allocation of purchase price [Abstract]
Cash and cash equivalents		5,300,000
Trade accounts receivable			10,247,000
Other assets			771,000
Property and equipment			2,798,000
Goodwill			131,860,000
Identifiable intangible assets			80,200,000
Accrued expenses and other liabilities			(10,212,000)
Deferred revenue			(926,000)
Total purchase price			$ 214,738,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life			7 years
Business acquisition purchase price allocation goodwill tax deductible period											15 years
Discount rate of net cash flows to their present values						20.00%					20.00%
Amortization of acquired intangible assets per quarter											$ 2,500,000
Fair value of the contingent consideration		221,000,000
Endicia [Member] | Trademark [Member]
Allocation of purchase price [Abstract]
Identifiable intangible assets			$ 10,900,000
Endicia [Member] | Developed Technology [Member]
Allocation of purchase price [Abstract]
Identifiable intangible assets			$ 26,100,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life			9 years
Endicia [Member] | Customer Relationship [Member]
Allocation of purchase price [Abstract]
Identifiable intangible assets			$ 43,200,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life			6 years
Endicia [Member] | Term Loan Facility [Member]
Purchase price [Abstract]
Maximum borrowing capacity		82,500,000
Outstanding debt						$ 78,400,000					78,400,000
Endicia [Member] | Revolving Credit Facility [Member]
Purchase price [Abstract]
Maximum borrowing capacity		82,500,000
Outstanding debt						72,000,000					72,000,000
Endicia [Member] | Letter of Credit [Member]
Purchase price [Abstract]
Outstanding debt						$ 510,000					$ 510,000
Endicia [Member] | Credit Agreement [Member]
Purchase price [Abstract]
Cash consideration		56,500,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Fair value of the contingent consideration		$ 164,500,000
ShipStation [Member]
Business Acquisition [Line Items]
Percentage of voting interests acquired																100.00%
Number of automatic order importing carts and marketplace | ShoppingCarts																50
Purchase price [Abstract]
Cash consideration				$ 50,000,000
Contingent consideration or deferred consideration				16,242,000
Total purchase price				66,242,000
Shares available for the earn-out payment period (in shares) | shares									192,225
Shares available during second earn out period (in shares) | shares							576,675
Allocation of purchase price [Abstract]
Cash and cash equivalents				1,117,000
Trade accounts receivable				254,000
Other assets				39,000
Property and equipment				187,000
Goodwill				50,544,000
Identifiable intangible assets				15,200,000
Accrued expenses and other liabilities				(835,000)
Deferred revenue				(264,000)
Total purchase price				$ 66,242,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life				8 years
Business acquisition purchase price allocation goodwill tax deductible period											15 years
Discount rate of net cash flows to their present values						15.00%					15.00%
Amortization of acquired intangible assets per quarter											$ 500,000
Contingent consideration charge								$ 13,600,000				$ 24,100,000
Fair value of the contingent consideration														$ 63,200,000
ShipStation [Member] | Minimum [Member]
Purchase price [Abstract]
Range of acquiree shares available for the performance linked earn-out (in shares) | shares													576,675	576,675
ShipStation [Member] | Maximum [Member]
Purchase price [Abstract]
Range of acquiree shares available for the performance linked earn-out (in shares) | shares													768,900	768,900
ShipStation [Member] | Trademark [Member]
Allocation of purchase price [Abstract]
Identifiable intangible assets				$ 500,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life				4 years
ShipStation [Member] | Developed Technology [Member]
Allocation of purchase price [Abstract]
Identifiable intangible assets				$ 5,300,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life				8 years
ShipStation [Member] | Non-Compete Agreement [Member]
Allocation of purchase price [Abstract]
Identifiable intangible assets				$ 400,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life				4 years
ShipStation [Member] | Customer Relationship [Member]
Allocation of purchase price [Abstract]
Identifiable intangible assets				$ 9,000,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life				8 years
ShipWorks [Member]
Business Acquisition [Line Items]
Percentage of voting interests acquired					100.00%
Number of automatic order importing carts and marketplace | ShoppingCarts					50
Purchase price [Abstract]
Cash consideration					$ 21,952,000
Contingent consideration or deferred consideration					181,000
Total purchase price					22,133,000
Allocation of purchase price [Abstract]
Cash and cash equivalents					803,000
Trade accounts receivable					353,000
Other assets					21,000
Property and equipment					1,091,000
Goodwill					16,349,000
Identifiable intangible assets					4,900,000
Accrued expenses and other liabilities					(1,119,000)
Deferred revenue					(265,000)
Total purchase price					$ 22,133,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life					6 years
Business acquisition purchase price allocation goodwill tax deductible period											15 years
Discount rate of net cash flows to their present values						13.00%					13.00%
Amortization of acquired intangible assets per quarter											$ 200,000
Adjusted purchase price										$ 69,000
ShipWorks [Member] | Trademark [Member]
Allocation of purchase price [Abstract]
Identifiable intangible assets					$ 200,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life					6 years
ShipWorks [Member] | Developed Technology [Member]
Allocation of purchase price [Abstract]
Identifiable intangible assets					$ 1,700,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life					7 years
ShipWorks [Member] | Non-Compete Agreement [Member]
Allocation of purchase price [Abstract]
Identifiable intangible assets					$ 700,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life					4 years
ShipWorks [Member] | Customer Relationship [Member]
Allocation of purchase price [Abstract]
Identifiable intangible assets					$ 2,300,000
Identifiable Intangible Assets, Weighted Average Estimated Useful Life [Abstract]
Identifiable intangible assets, weighted average estimated useful life					6 years

XML

Commitments and Contingencies (Details) $ in Thousands	Sep. 30, 2016 USD ($)
Future minimum lease payment under operating leases [Abstract]
2017	$ 3,845
2018	3,985
2019	1,626
2020	1,389
2021	1,204
Thereafter	198
Total	$ 12,247

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Net Income (loss) per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Computation of basic and diluted net income (loss) per share [Abstract]
Net income (loss)	$ 18,672	$ 7,274	$ 46,201	$ (4,127)
Basic - weighted average common shares (in shares)	17,218	16,538	17,319	16,367
Diluted effect of common stock equivalents (in shares)	902	979	1,006	0	[1]
Diluted - weighted average common shares (in shares)	18,120	17,517	18,325	16,367	[2]
Earnings (loss) per share [Abstract]
Basic (in dollars per share)	$ 1.08	$ 0.44	$ 2.67	$ (0.25)
Diluted (in dollars per share)	$ 1.03	$ 0.42	$ 2.52	$ (0.25)
Stock Options [Member]
Anti-dilutive Shares Excluded from Computation of Diluted Shares [Abstract]
Anti-dilutive stock options (in shares)	514	64	269	2,990

[1] Common equivalent shares are excluded from the diluted net loss per share calculation as their effect is anti-dilutive.

[2] Common equivalent shares are excluded from the diluted loss per share calculation as their effect is anti-dilutive.

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Stock-Based Employee Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 8,822	$ 3,061	$ 24,755	$ 9,104
Weighted Average Assumptions used in Black-Scholes Valuation Model [Abstract]
Expected dividend yield	0.00%	0.00%	0.00%	0.00%
Risk-free interest rate	1.00%	1.00%	1.00%	1.00%
Expected volatility	47.00%	46.00%	48.00%	46.00%
Expected life	3 years 4 months 24 days	3 years 4 months 24 days	3 years 4 months 24 days	3 years 4 months 24 days
Expected forfeiture rate	6.00%	6.00%	6.00%	6.00%
Employee and Director Stock Options [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 8,525	$ 2,899	$ 23,960	$ 8,701
Employee Stock Purchases [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	297	162	795	403
Cost of Revenues [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	476	221	1,351	589
Sales and Marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	1,734	766	5,322	2,341
Research and Development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	1,916	641	4,696	1,806
General and Administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 4,696	$ 1,433	$ 13,386	$ 4,368
Maximum [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Vesting period			5 years

XML

Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 197,807
Purchase price adjustment (see Note 2 - "Acquisitions")	945
Acquisition of ShippingEasy (see Note 2 - "Acquisitions")	40,780
Goodwill balance at September 30, 2016	239,532
Intangible Assets [Abstract]
Amortizable and non-amortizable intangible assets gross carrying amount	125,400		$ 109,700
Non-amortizable assets	11,400
Gross Carrying Amount	113,968
Accumulated Amortization	24,310
Total	89,658
Amortization of intangible assets	$ 10,500	$ 2,300
Identifiable intangible assets, weighted average remaining useful life	5 years 9 months 18 days
Amortization Expense, Fiscal Year Maturity [Abstract]
2017	$ 16,038
2018	15,964
2019	15,623
2020	15,545
2021	14,422
Thereafter	12,066
Total	89,658
Patents and Others [Member]
Intangible Assets [Abstract]
Gross Carrying Amount	8,889
Accumulated Amortization	8,763
Total	126
Amortization Expense, Fiscal Year Maturity [Abstract]
Total	126
Customer Relationships [Member]
Intangible Assets [Abstract]
Gross Carrying Amount	60,816
Accumulated Amortization	9,696
Total	51,120
Amortization Expense, Fiscal Year Maturity [Abstract]
Total	51,120
Technology [Member]
Intangible Assets [Abstract]
Gross Carrying Amount	40,048
Accumulated Amortization	4,801
Total	35,247
Amortization Expense, Fiscal Year Maturity [Abstract]
Total	35,247
Non-Compete [Member]
Intangible Assets [Abstract]
Gross Carrying Amount	2,211
Accumulated Amortization	652
Total	1,559
Amortization Expense, Fiscal Year Maturity [Abstract]
Total	1,559
Trademark [Member]
Intangible Assets [Abstract]
Gross Carrying Amount	2,004
Accumulated Amortization	398
Total	1,606
Amortization Expense, Fiscal Year Maturity [Abstract]
Total	$ 1,606

XML

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Income Taxes [Abstract]
Income tax expense (benefit)	$ 12,115	$ 5,765	$ 30,026	$ (90)
Valuation allowance	$ 0		$ 0		$ 0

XML

Fair Value Measurements (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Financial assets measured at fair value on a recurring basis [Abstract]
Available-for-sale debt securities	$ 3,029
Contingent consideration measured at fair value on a recurring basis [Abstract]
Contingent consideration - current	0	$ 63,209
Recurring [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Cash equivalents	81,144	65,126
Available-for-sale debt securities	3,029	10,082
Total	84,173	75,208
Contingent consideration measured at fair value on a recurring basis [Abstract]
Contingent consideration - current		63,209
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Cash equivalents	81,144	65,126
Available-for-sale debt securities	0	0
Total	81,144	65,126
Contingent consideration measured at fair value on a recurring basis [Abstract]
Contingent consideration - current		63,209
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Cash equivalents	0	0
Available-for-sale debt securities	3,029	10,082
Total	3,029	10,082
Contingent consideration measured at fair value on a recurring basis [Abstract]
Contingent consideration - current		0
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Financial assets measured at fair value on a recurring basis [Abstract]
Cash equivalents	0	0
Available-for-sale debt securities	0	0
Total	$ 0	0
Contingent consideration measured at fair value on a recurring basis [Abstract]
Contingent consideration - current		$ 0

XML

Cash, Cash Equivalents and Investments (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2016 USD ($) Security	Sep. 30, 2016 USD ($) Security	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
Cash, Cash Equivalents and Investments [Abstract]
Number of securities held | Security	3	3
Fair value of securities	$ 27,000	$ 27,000
Unrealized losses on security held		2,000
Other than temporary impairment	0	0
Cash and cash equivalents [Abstract]
Cost or amortized cost	81,144,000	81,144,000	$ 65,126,000	$ 89,559,000	$ 40,933,000
Contractual maturities of marketable fixed-income securities [Abstract]
Due within one year, amortized cost	3,014,000	3,014,000
Due after one year, amortized cost	0	0
Total, Amortized Cost	3,014,000	3,014,000
Due within one year, estimated fair value	3,029,000	3,029,000
Due after one year, fair value	0	0
Total, Estimated Fair Value	3,029,000	3,029,000
Total Cash and Cash Equivalents [Member]
Cash and cash equivalents [Abstract]
Cost or amortized cost	81,144,000	81,144,000	65,126,000
Gross unrealized gains	0	0	0
Gross unrealized Losses	0	0	0
Estimated fair value	81,144,000	81,144,000	65,126,000
Total Short-Term Investments [Member]
Cash and cash equivalents [Abstract]
Cost or amortized cost	3,014,000	3,014,000	8,549,000
Gross unrealized gains	18,000	18,000	7,000
Gross unrealized Losses	(3,000)	(3,000)	(3,000)
Estimated fair value	3,029,000	3,029,000	8,553,000
Total Long-Term Investments [Member]
Cash and cash equivalents [Abstract]
Cost or amortized cost	0	0	1,515,000
Gross unrealized gains	0	0	17,000
Gross unrealized Losses	0	0	(3,000)
Estimated fair value	0	0	1,529,000
Cash, Cash Equivalents and Investments [Member]
Cash and cash equivalents [Abstract]
Cost or amortized cost	84,158,000	84,158,000	75,190,000
Gross unrealized gains	18,000	18,000	24,000
Gross unrealized Losses	(3,000)	(3,000)	(6,000)
Estimated fair value	84,173,000	84,173,000	75,208,000
Cash [Member] | Total Cash and Cash Equivalents [Member]
Cash and cash equivalents [Abstract]
Cost or amortized cost	77,726,000	77,726,000	63,593,000
Gross unrealized gains	0	0	0
Gross unrealized Losses	0	0	0
Estimated fair value	77,726,000	77,726,000	63,593,000
Money Market [Member] | Total Cash and Cash Equivalents [Member]
Cash and cash equivalents [Abstract]
Cost or amortized cost	3,418,000	3,418,000	1,533,000
Gross unrealized gains	0	0	0
Gross unrealized Losses	0	0	0
Estimated fair value	3,418,000	3,418,000	1,533,000
Corporate Bonds and Asset Backed Securities [Member] | Total Short-Term Investments [Member]
Cash and cash equivalents [Abstract]
Cost or amortized cost	3,014,000	3,014,000	8,549,000
Gross unrealized gains	18,000	18,000	7,000
Gross unrealized Losses	(3,000)	(3,000)	(3,000)
Estimated fair value	3,029,000	3,029,000	8,553,000
Corporate Bonds and Asset Backed Securities [Member] | Total Long-Term Investments [Member]
Cash and cash equivalents [Abstract]
Cost or amortized cost	0	0	1,515,000
Gross unrealized gains	0	0	17,000
Gross unrealized Losses	0	0	(3,000)
Estimated fair value	$ 0	$ 0	$ 1,529,000