10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

FORM 10-Q

(Mark One)

ý Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended March 31, 2015.

or

o Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from  _______________ to _______________

Commission File No. 1-13998

Insperity, Inc.

(Exact name of registrant as specified in its charter)

Delaware	76-0479645
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
19001 Crescent Springs Drive
Kingwood, Texas	77339
(Address of principal executive offices)	(Zip Code)

(Registrant’s Telephone Number, Including Area Code):  (281) 358-8986

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 ý  No o

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 during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes ý  No o

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 definition of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer ý Accelerated filer o Non-accelerated filer o Smaller reporting company o

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

As of April 24, 2015, 25,504,362 shares of the registrant’s common stock, par value $0.01 per share, were outstanding.

	TABLE OF CONTENTS
	Part I
Item 1.	Financial Statements	3
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	17
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	24
Item 4.	Controls and Procedures	24
Part II
Item 1.	Legal Proceedings	25
Item 1a.	Risk Factors	25
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	26
Item 6.	Exhibits	27

PART I

ITEM 1.  FINANCIAL STATEMENTS

INSPERITY, INC.

CONSOLIDATED BALANCE SHEETS

(in thousands)

ASSETS

	March 31, 2015			December 31, 2014
	(Unaudited)
Current assets:
Cash and cash equivalents	$	228,588		$	276,456
Restricted cash	45,152			44,040
Marketable securities	28,840			28,631
Accounts receivable, net:
Trade	3,740			12,010
Unbilled	252,931			160,154
Other	3,107			2,952
Prepaid insurance	36,660			21,301
Assets held for sale	13,495			—
Other current assets	21,080			17,649
Deferred income taxes	—			6,316
Total current assets	633,593			569,509
Property and equipment:
Land	5,214			5,214
Buildings and improvements	71,008			70,471
Computer hardware and software	89,367			89,204
Software development costs	41,987			41,314
Furniture, fixtures and other	38,641			38,617
Aircraft	—			35,866
	246,217			280,686
Accumulated depreciation and amortization	(187,102		)	(196,341		)
Total property and equipment, net	59,115			84,345
Other assets:
Prepaid health insurance	9,000			9,000
Deposits – health insurance	3,700			3,700
Deposits – workers’ compensation	115,640			113,934
Goodwill and other intangible assets, net	14,232			14,457
Deferred income taxes	3,588			—
Other assets	1,753			1,725
Total other assets	147,913			142,816
Total assets	$	840,621		$	796,670

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INSPERITY, INC.

CONSOLIDATED BALANCE SHEETS (Continued)

(in thousands)

LIABILITIES AND STOCKHOLDERS’ EQUITY

	March 31, 2015			December 31, 2014
	(Unaudited)
Current liabilities:
Accounts payable	$	3,061		$	4,674
Payroll taxes and other payroll deductions payable	176,667			176,341
Accrued worksite employee payroll cost	223,564			192,396
Accrued health insurance costs	25,589			18,329
Accrued workers’ compensation costs	47,225			45,592
Accrued corporate payroll and commissions	23,068			32,644
Other accrued liabilities	25,347			22,444
Deferred income taxes	6,944			—
Income taxes payable	280			4,031
Total current liabilities	531,745			496,451
Noncurrent liabilities:
Accrued workers’ compensation costs	95,775			92,048
Deferred income taxes	—			4,075
Total noncurrent liabilities	95,775			96,123
Commitments and contingencies
Stockholders’ equity:
Common stock	308			308
Additional paid-in capital	140,963			137,769
Treasury stock, at cost	(151,599		)	(148,465		)
Accumulated other comprehensive income, net of tax	5			3
Retained earnings	223,424			214,481
Total stockholders’ equity	213,101			204,096
Total liabilities and stockholders’ equity	$	840,621		$	796,670

See accompanying notes.

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INSPERITY, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per share amounts)

(Unaudited)

	Three Months Ended   March 31,
	2015			2014
Revenues (gross billings of $3.940 billion and $3.588 billion, less worksite employee payroll cost of $3.241 billion and $2.951 billion, respectively)	$	699,479		$	636,999
Direct costs:
Payroll taxes, benefits and workers’ compensation costs	569,619			530,823
Gross profit	129,860			106,176
Operating expenses:
Salaries, wages and payroll taxes	56,748			51,032
Stock-based compensation	2,423			2,400
Commissions	4,304			3,246
Advertising	3,718			4,941
General and administrative expenses	24,055			22,732
Impairment charges and other	9,807			—
Depreciation and amortization	5,285			5,234
	106,340			89,585
Operating income	23,520			16,591
Other income (expense):
Interest, net	7			47
Other, net	—			(26		)
Income before income tax expense	23,527			16,612
Income tax expense	9,740			7,048
Net income	$	13,787		$	9,564
Less distributed and undistributed earnings allocated to participating securities	(355		)	(282		)
Net income allocated to common shares	$	13,432		$	9,282
Basic net income per share of common stock	$	0.54		$	0.37
Diluted net income per share of common stock	$	0.54		$	0.37

See accompanying notes.

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INSPERITY, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in thousands)

(Unaudited)

	Three Months Ended   March 31,
	2015		2014
Net income	$	13,787	$	9,564
Other comprehensive income:
Unrealized gain (loss) on available-for-sale securities, net of tax	2		(3		)
Comprehensive income	$	13,789	$	9,561

See accompanying notes.

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INSPERITY, INC.

CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY

THREE MONTHS ENDED MARCH 31, 2015

(in thousands)

(Unaudited)

	Common Stock Issued			Additional Paid-In Capital			Treasury Stock			Accumulated Other Comprehensive Income		Retained Earnings			Total
	Shares	Amount
Balance at December 31, 2014	30,758	$	308	$	137,769		$	(148,465	)	$	3	$	214,481		$	204,096
Purchase of treasury stock, at cost	—	—		—			(5,719		)	—		—			(5,719		)
Exercise of stock options	—	—		(3		)	377			—		—			374
Income tax benefit from stock-based compensation, net	—	—		2,697			—			—		—			2,697
Stock-based compensation expense	—	—		434			1,989			—		—			2,423
Other	—	—		66			219			—		—			285
Dividends paid	—	—		—			—			—		(4,844		)	(4,844		)
Unrealized gain on marketable securities, net of tax	—	—		—			—			2		—			2
Net income	—	—		—			—			—		13,787			13,787
Balance at March 31, 2015	30,758	$	308	$	140,963		$	(151,599	)	$	5	$	223,424		$	213,101

See accompanying notes.

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INSPERITY, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

(Unaudited)

	Three Months Ended   March 31,
	2015			2014
Cash flows from operating activities:
Net income	$	13,787		$	9,564
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	5,285			5,234
Impairment charges and other	9,807			—
Amortization of marketable securities	316			510
Stock-based compensation	2,423			2,400
Deferred income taxes	5,594			6,387
Changes in operating assets and liabilities:
Restricted cash	(1,112		)	(234		)
Accounts receivable	(84,662		)	(12,390		)
Prepaid insurance	(15,359		)	(24,155		)
Other current assets	(3,432		)	(7,175		)
Other assets	(1,642		)	(2,964		)
Accounts payable	(1,613		)	(87		)
Payroll taxes and other payroll deductions payable	326			(1,619		)
Accrued worksite employee payroll expense	31,168			13,510
Accrued health insurance costs	7,260			20,605
Accrued workers’ compensation costs	5,360			2,837
Accrued corporate payroll, commissions and other accrued liabilities	(7,473		)	5,340
Income taxes payable/receivable	(3,983		)	(8,872		)
Total adjustments	(51,737		)	(673		)
Net cash provided by (used in) operating activities	(37,950		)	8,891
Cash flows from investing activities:
Marketable securities:
Purchases	(3,964		)	(7,668		)
Proceeds from dispositions	824			—
Proceeds from maturities	2,620			6,595
Property and equipment	(2,423		)	(2,379		)
Net cash used in investing activities	(2,943		)	(3,452		)

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INSPERITY, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued)

(in thousands)

(Unaudited)

	Three Months Ended   March 31,
	2015			2014
Cash flows from financing activities:
Purchase of treasury stock	$	(5,719	)	$	(13,884	)
Dividends paid	(4,844		)	(4,351		)
Proceeds from the exercise of stock options	374			163
Income tax benefit from stock-based compensation	2,929			78
Other	285			318
Net cash used in financing activities	(6,975		)	(17,676		)
Net decrease in cash and cash equivalents	(47,868		)	(12,237		)
Cash and cash equivalents at beginning of period	276,456			225,755
Cash and cash equivalents at end of period	$	228,588		$	213,518

See accompanying notes.

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INSPERITY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

March 31, 2015

(Unaudited)

1. Basis of Presentation

Insperity, Inc., a Delaware corporation (“Insperity,” “we,” “our,” and “us”), provides an array of human resources (“HR”) and business solutions designed to help improve business performance.  Our most comprehensive HR service offerings are provided through our professional employer organization (“PEO”) services, known as Workforce Optimization^® and Workforce Synchronization solutions (together, our “PEO HR Outsourcing solutions”), which encompass a broad range of HR functions, including payroll and employment administration, employee benefits, workers’ compensation, government compliance, performance management, and training and development services.

In addition to our PEO HR Outsourcing solutions, we offer Human Capital Management, Payroll Services, Time and Attendance, Performance Management, Organizational Planning, Recruiting Services, Employment Screening, Financial and Expense Management Services, Retirement Services and Insurance Services (collectively “Strategic Businesses” and formerly known as “Adjacent Businesses”), many of which are offered via desktop applications or cloud-based delivery models.  These other products and services are offered separately, in customizable bundles, or along with PEO HR Outsourcing solutions.

The Consolidated Financial Statements include the accounts of Insperity and its subsidiaries, all of which are wholly owned.  Intercompany accounts and transactions have been eliminated in consolidation.

The preparation of financial statements in conformity with accounting principles generally accepted in the United States (“GAAP”) requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes.  Actual results could differ from those estimates.

The accompanying Consolidated Financial Statements should be read in conjunction with our audited Consolidated Financial Statements at and for the year ended December 31, 2014. Our Consolidated Balance Sheet at December 31, 2014 has been derived from the audited financial statements at that date, but does not include all of the information or footnotes required by GAAP for complete financial statements.  Our Consolidated Balance Sheet at March 31, 2015 and our Consolidated Statements of Operations and Comprehensive Income for the three month periods ended March 31, 2015 and 2014, our Consolidated Statements of Cash Flows for the three month periods ended March 31, 2015 and 2014, and our Consolidated Statement of Stockholders’ Equity for the three month period ended March 31, 2015, have been prepared by us without audit. In the opinion of management, all adjustments, consisting only of normal recurring adjustments necessary to present fairly the consolidated financial position, results of operations and cash flows, have been made. Certain prior year amounts have been reclassified to conform to the 2015 presentation.

The results of operations for the interim periods are not necessarily indicative of the operating results for a full year or of future operations.

2. Accounting Policies

Health Insurance Costs

We provide group health insurance coverage to our worksite employees through a national network of carriers, including UnitedHealthcare (“United”), UnitedHealthcare of California, Kaiser Permanente, Blue Shield of California, HMSA BlueCross BlueShield, Unity Health Plan and Tufts, all of which provide fully insured policies or service contracts.

The policy with United provides the majority of our health insurance coverage. As a result of certain contractual terms, we have accounted for this plan since its inception using a partially self-funded insurance accounting model.  Accordingly, we record the costs of the United plan, including an estimate of the incurred claims, taxes and administrative fees (collectively the “Plan Costs”) as benefits expense in our Consolidated Statements of Operations.  The estimated incurred claims are based upon: (i) the level of claims processed during the quarter; (ii) estimated completion rates based upon recent claim development patterns under the plan; and (iii) the number of participants in the plan, including both

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active and COBRA enrollees.  Each reporting period, changes in the estimated ultimate costs resulting from claim trends, plan design and migration, participant demographics and other factors are incorporated into the Plan Costs.

Additionally, since the plan’s inception, under the terms of the contract, United establishes cash funding rates 90 days in advance of the beginning of a reporting quarter. If the Plan Costs for a reporting quarter are greater than the premiums paid and owed to United, a deficit in the plan would be incurred and a liability for the excess costs would be accrued in our Consolidated Balance Sheets. On the other hand, if the Plan Costs for the reporting quarter are less than the premiums paid and owed to United, a surplus in the plan would be incurred and we would record an asset for the excess premiums in our Consolidated Balance Sheets. The terms of the arrangement require us to maintain an accumulated cash surplus in the plan of $9.0 million, which is reported as long-term prepaid insurance. In addition, United requires a deposit equal to approximately one day of claims funding activity, which was $3.5 million as of March 31, 2015, and is reported as a long-term asset. As of March 31, 2015, Plan Costs were less than the net premiums paid and owed to United by $36.2 million. As this amount is in excess of the agreed-upon $9.0 million surplus maintenance level, the $27.2 million balance is included in prepaid insurance, a current asset, in our Consolidated Balance Sheets. The premiums owed to United at March 31, 2015 were $22.0 million, which is included in accrued health insurance costs, a current liability in our Consolidated Balance Sheets.

Workers’ Compensation Costs

Our workers’ compensation coverage has been provided through an arrangement with the ACE Group of Companies (the “ACE Program”) since 2007. The ACE Program is fully insured in that ACE has the responsibility to pay all claims incurred regardless of whether we satisfy our responsibilities. We bear the economic burden for the first $1 million layer of claims per occurrence, as well as a maximum aggregate amount of $5 million per policy year for those claims that exceed $1 million. The insurance carrier bears responsibility for the claims in excess of such amounts.

Because we bear the economic burden for claims up to the levels noted above, such claims, which are the primary component of our workers’ compensation costs, are recorded in the period incurred. Workers’ compensation insurance includes ongoing health care and indemnity coverage whereby claims are paid over numerous years following the date of injury. Accordingly, the accrual of related incurred costs in each reporting period includes estimates, which take into account the ongoing development of claims and therefore requires a significant level of judgment.

We employ a third party actuary to estimate our loss development rate, which is primarily based upon the nature of worksite employees’ job responsibilities, the location of worksite employees, the historical frequency and severity of workers’ compensation claims, and an estimate of future cost trends. Each reporting period, changes in the actuarial assumptions resulting from changes in actual claims experience and other trends are incorporated into our workers’ compensation claims cost estimates. Workers’ compensation cost estimates are discounted to present value at a rate based upon the U.S. Treasury rates that correspond with the weighted average estimated claim payout period (the average discount rate utilized in the 2015 and 2014 periods was 1.0% in both periods) and are accreted over the estimated claim payment period and included as a component of direct costs in our Consolidated Statements of Operations.

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The following table presents the activity and balances related to incurred but not paid workers’ compensation claims:

	Three Months Ended   March 31,
	2015			2014
	(in thousands)
Beginning balance, January 1,	$	136,088		$	120,833
Accrued claims	15,958			12,453
Present value discount	(570		)	(439		)
Paid claims	(10,549		)	(9,399		)
Ending balance	$	140,927		$	123,448
Current portion of accrued claims	$	45,152		$	52,163
Long-term portion of accrued claims	95,775			71,285
	$	140,927		$	123,448

The current portion of accrued workers’ compensation costs on our Consolidated Balance Sheets at March 31, 2015 includes $2.1 million of workers’ compensation administrative fees.

As of March 31, 2015 and 2014, the undiscounted accrued workers’ compensation costs were $150.6 million and $133.6 million, respectively.

At the beginning of each policy period, the insurance carrier establishes monthly funding requirements comprised of premium costs and funds to be set aside for payment of future claims (“claim funds”). The level of claim funds is primarily based upon anticipated worksite employee payroll levels and expected workers’ compensation loss rates, as determined by the insurance carrier. Monies funded into the program for incurred claims expected to be paid within one year are recorded as restricted cash, a short-term asset, while the remainder of claim funds are included in deposits, a long-term asset in our Consolidated Balance Sheets. As of March 31, 2015, we had restricted cash of $45.2 million and deposits of $115.6 million.

Our estimate of incurred claim costs expected to be paid within one year is recorded as accrued workers’ compensation costs and included in short-term liabilities, while our estimate of incurred claim costs expected to be paid beyond one year is included in long-term liabilities on our Consolidated Balance Sheets.

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3. Cash, Cash Equivalents and Marketable Securities

The following table summarizes our cash and investments in cash equivalents and marketable securities held by investment managers and overnight investments:

	March 31, 2015			December 31, 2014
	(in thousands)
Overnight Holdings
Money market funds (cash equivalents)	$	207,220		$	271,840
Investment Holdings
Money market funds (cash equivalents)	13,882			14,125
Marketable securities	28,840			28,631
	249,942			314,596
Cash held in demand accounts	21,417			20,369
Outstanding checks	(13,931		)	(29,878		)
Total cash, cash equivalents and marketable securities	$	257,428		$	305,087
Cash and cash equivalents	$	228,588		$	276,456
Marketable securities	28,840			28,631
Total cash, cash equivalents and marketable securities	$	257,428		$	305,087

Our cash and overnight holdings fluctuate based on the timing of clients’ payroll processing cycles.  Included in the cash, cash equivalents and marketable securities at March 31, 2015 and December 31, 2014, are $158.6 million and $152.1 million, respectively, of funds associated with federal and state income tax withholdings, employment taxes and other payroll deductions, as well as $22.7 million and $87.9 million in client prepayments, respectively.

We account for our financial assets in accordance with Accounting Standard Codification 820, Fair Value Measurement.  This standard defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements.  The fair value measurement disclosures are grouped into three levels based on valuation factors:

• Level 1 - quoted prices in active markets using identical assets

• Level 2 - significant other observable inputs, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other observable inputs

• Level 3 - significant unobservable inputs

The following table summarizes the levels of fair value measurements of our financial assets:

	Fair Value Measurements
	(in thousands)
	March 31, 2015		Level 1		Level 2		Level 3
Money market funds	$	221,102	$	221,102	$	—	$	—
Municipal bonds	28,840		—		28,840		—
Total	$	249,942	$	221,102	$	28,840	$	—

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	Fair Value Measurements
	(in thousands)
	December 31, 2014		Level 1		Level 2		Level 3
Money market funds	$	285,965	$	285,965	$	—	$	—
Municipal bonds	28,631		—		28,631		—
Total	$	314,596	$	285,965	$	28,631	$	—

The municipal bond securities valued as Level 2 investments are primarily pre-refunded municipal bonds that are secured by escrow funds containing U.S. Government securities. Our valuation techniques used to measure fair value for these securities during the period consisted primarily of third party pricing services that utilized actual market data such as trades of comparable bond issues, broker/dealer quotations for the same or similar investments in active markets and other observable inputs.

The following is a summary of our available-for-sale marketable securities:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
			(in thousands)
March 31, 2015
Municipal bonds	$	28,831	$	15	$	(6	)	$	28,840
December 31, 2014
Municipal bonds	$	28,626	$	16	$	(11	)	$	28,631

As of March 31, 2015, the contractual maturities of our marketable securities were as follows:

	Amortized Cost		Estimated Fair Value
	(in thousands)
Less than one year	$	15,324	$	15,332
One to five years	13,507		13,508
Total	$	28,831	$	28,840

4. Assets Held for Sale

In the first quarter of 2015, we entered into a plan to sell our two aircraft, and as a result, reclassified the assets from property, plant and equipment to assets held for sale. We also recorded impairment and other charges of $9.8 million, which represents the difference between the carrying value and the fair value and includes a provision for potential settlement of a Texas sales and use tax assessment. The fair value of assets held for sale of $13.5 million was determined based on the estimated selling price less costs incurred to sell and was classified as Level 2 in the fair value hierarchy. As of March 31, 2015, we had current deferred tax liabilities of $3.0 million related to these assets held for sale.

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5. Revolving Credit Facility

We have a $125 million revolving credit facility (the “Facility”), which may be increased to $150 million based on the terms and subject to the conditions set forth in the agreement relating to the Facility (the “Credit Agreement”). The Facility matures in February 2020.  The Facility contains both affirmative and negative covenants, which we believe are customary for arrangements of this nature.  At March 31, 2015, we were in compliance with all financial covenants under the Credit Agreement and had not drawn on the Facility. As of March 31, 2015, we had an outstanding $0.6 million letter of credit issued under the Facility.

6. Stockholders' Equity

Our Board of Directors (the “Board”) has authorized a program to repurchase shares of our outstanding common stock (“Repurchase Program”).  The purchases are to be made from time to time in the open market or directly from stockholders at prevailing market prices based on market conditions and other factors. During the three months ended March 31, 2015, no shares were repurchased under the Repurchase Program and 113,050 shares not subject to the Repurchase Program were withheld to satisfy tax withholding obligations for the vesting of restricted stock awards.  As of March 31, 2015, we were authorized to repurchase an additional 768,765 shares under the Repurchase Program.

The Board declared quarterly dividends as follows:

	2015		2014
	(amounts per share)
First quarter	$	0.19	$	0.17

 During the three months ended March 31, 2015 and 2014, we paid dividends totaling $4.8 million and $4.4 million, respectively.     

7. Net Income per Share

We utilize the two-class method to compute net income per share.  The two-class method allocates a portion of net income to participating securities, which include unvested awards of share-based payments with non-forfeitable rights to receive dividends.  Net income allocated to unvested share-based payments is excluded from net income allocated to common shares.  Any undistributed losses resulting from dividends exceeding net income are not allocated to participating securities.  Basic net income per share is computed by dividing net income allocated to common shares by the weighted average number of common shares outstanding during the period.  Diluted net income per share is computed by dividing net income allocated to common shares by the weighted average number of common shares outstanding during the period, plus the dilutive effect of outstanding stock options.

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The following table summarizes the net income allocated to common shares and the basic and diluted shares used in the net income per share computations:

	Three Months Ended   March 31,
	2015			2014
	(in thousands)
Net income	$	13,787		$	9,564
Less distributed and undistributed earnings allocated to participating securities	(355		)	(282		)
Net income allocated to common shares	$	13,432		$	9,282
Weighted average common shares outstanding	24,716			24,823
Incremental shares from assumed conversions of common stock options	8			7
Adjusted weighted average common shares outstanding	24,724			24,830
Potentially dilutive securities not included in weighted average share calculation due to anti-dilutive effect	—			—

8. Commitments and Contingencies

We are a defendant in various lawsuits and claims arising in the normal course of business.  Management believes it has valid defenses in these cases and is defending them vigorously.  While the results of litigation cannot be predicted with certainty, management believes the final outcome of such litigation will not have a material adverse effect on our financial position or results of operations.

Federal Unemployment Taxes

Employers in certain states are experiencing higher Federal Unemployment Tax Act (“FUTA”) tax rates as a result of certain states not repaying their unemployment loans from the federal government in a timely manner. The Benefit Cost Ratio Add-On (“BCR”) is an additional tax on the FUTA wage base for employers in states that continue to have outstanding federal unemployment insurance loans beginning with the fifth year in which there is a balance due on the loan. States have the option to apply for a waiver before July 1^st of the year in which the BCR is applicable. Seven states are at risk for assessment of the BCR in 2015. We expect most states will be notified by the federal government in the third quarter of 2015 if a waiver has been granted in response to the state’s application. Accordingly, the potential additional FUTA tax associated with worksite employees in these seven states was approximately $3.5 million as of March 31, 2015.

Generally, our contractual agreements allow us to incorporate such increases into our service fees upon the effective date of the rate change.  However, our ability to fully adjust service fees in our billing systems and collect such increases over the remaining term of the customers’ contracts could be limited, resulting in a potential tax increase not being fully recovered.  As a result, if these FUTA tax increases are instituted and not collected from our clients, such increases could have a material adverse effect on our financial condition or results of operations.

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

You should read the following discussion in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2014, as well as our Consolidated Financial Statements and notes thereto included in this quarterly report on Form 10-Q.

Results of Operations

Three Months Ended March 31, 2015 Compared to Three Months Ended March 31, 2014.

The following table presents certain information related to our results of operations:

	Three Months Ended   March 31,
	2015			2014		% Change
	(in thousands, except per share and statistical data)
Revenues (gross billings of $3.940 billion and $3.588 billion, less worksite employee payroll cost of $3.241 billion and $2.951 billion, respectively)	$	699,479		$	636,999	9.8	%
Gross profit	129,860			106,176		22.3	%
Operating expenses	106,340		(1)	89,585		18.7	%
Operating income	23,520			16,591		41.8	%
Other income	7			21		(66.7	)%
Net income	13,787			9,564		44.2	%
Diluted net income per share of common stock	0.54			0.37		45.9	%
Adjusted net income(2)	21,627			10,946		97.6	%
Adjusted diluted net income per share of common stock(2)	0.86			0.42		104.8	%
Adjusted EBITDA(2)	42,290			24,335		73.8	%
Statistical Data:
Average number of worksite employees paid per month	137,959			126,289		9.2	%
Revenues per worksite employee per month(3)	$	1,690		$	1,681	0.5	%
Gross profit per worksite employee per month	314			280		12.1	%
Operating expenses per worksite employee per month	257			236		8.9	%
Operating income per worksite employee per month	57			44		29.5	%
Net income per worksite employee per month	33			25		32.0	%

 ____________________________________

⁽¹⁾  Includes non-cash impairment and other charges in the first quarter of 2015 of $9.8 million. Please read Note 4 to the Consolidated Financial Statements, “Assets Held for Sale” to the Consolidated Financial Statements, for additional information.

⁽²⁾  Please read “Non-GAAP Financial Measures” for a reconciliation of the non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with GAAP.

⁽³⁾  Gross billings of $9,521 and $9,469 per worksite employee per month, less payroll cost of $7,831 and $7,788 per worksite employee per month, respectively.

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Revenues

Our revenues for the first quarter of 2015increased9.8% over the 2014 period, primarily due to a 9.2%increase in the average number of worksite employees paid per month and a 0.5%, or $9, increase in revenues per worksite employee per month.

We provide our PEO HR Outsourcing solutions to small and medium-sized businesses in strategically selected markets throughout the United States. By region, our PEO HR Outsourcing solutions revenue change from the first quarter of 2014 and distribution for the quarters ended March 31, 2015 and 2014 were as follows:

	Three Months Ended   March 31,						Three Months Ended   March 31,
	2015		2014		% Change		2015		2014
	(in thousands)						(% of total revenue)
Northeast	$	184,362	$	165,862	11.2	%	26.8	%	26.4	%
Southeast	66,562		60,625		9.8	%	9.7	%	9.7	%
Central	104,617		90,399		15.7	%	15.2	%	14.4	%
Southwest	176,646		169,514		4.2	%	25.7	%	27.0	%
West	156,094		141,156		10.6	%	22.6	%	22.5	%
	688,281		627,556		9.7	%	100.0	%	100.0	%
Other revenue(1)	11,198		9,443		18.6	%
Total revenue	$	699,479	$	636,999	9.8	%

_____________________________

⁽¹⁾ Comprised primarily of revenues generated by our Strategic Businesses.

The percentage of total PEO HR Outsourcing solutions revenues in our significant markets include the following:

	Three Months Ended March 31,
	2015		2014
Texas	24.0	%	25.1	%
California	18.1	%	17.9	%
New York	10.1	%	10.1	%
Other	47.8	%	46.9	%
Total	100.0	%	100.0	%

Our growth in the number of worksite employees paid is affected by three primary sources: new client sales, client retention and the net change in existing clients through worksite employee new hires and layoffs.  During the first quarter of 2015, we saw improvement in worksite employees paid from new client sales and client retention as compared to the first quarter 2014, while the net change in existing clients declined slightly as compared to the first quarter of 2014.

Gross Profit

Gross profit for the first quarter of 2015increased22.3% over the first quarter of 2014 to $129.9 million.  The average gross profit per worksite employee increased12.1% to $314 per month in the 2015 period from $280 per month in the 2014 period.  Included in gross profit in the 2015 period is a $17 per worksite employee per month contribution from our Strategic Businesses compared to $15 per worksite employee per month in the 2014 period.

Our pricing objectives attempt to maintain or improve the gross profit per worksite employee by increasing revenue per worksite employee to match or exceed changes in primary direct costs and operating expenses.  Our revenues during the first quarter of 2015increased0.5% per worksite employee per month over the first quarter of 2014. Our direct costs, which primarily include payroll taxes, benefits and workers’ compensation expenses, decreased1.8% to $1,376 per worksite

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employee per month in the first quarter of 2015 versus $1,401 in the first quarter of 2014.  The primary direct cost components changed as follows:

• Benefits costs – The cost of group health insurance and related employee benefits decreased$29 per worksite employee per month, or 3.2% on a cost per covered employee basis, compared to the first quarter of 2014. Our benefits costs incurred in the first quarter of 2015 reflect favorable claim trends due to a reduction in both large claims and COBRA participation levels. The percentage of worksite employees covered under our health insurance plans was 71.5% in the 2015 period compared to 72.4% in the 2014 period. Please read Note 2 to the Consolidated Financial Statements, “Accounting Policies – Health Insurance Costs,” for a discussion of our accounting for health insurance costs.

• Workers’ compensation costs – Workers’ compensation costs increased22.8%, or $5 per worksite employee per month, compared to the first quarter of 2014, primarily due to higher incurred claim levels.  As a percentage of non-bonus payroll cost, workers’ compensation costs were 0.71% in the 2015 period compared to 0.65% in the 2014 period. Please read Note 2 to the Consolidated Financial Statements, “Accounting Policies – Workers’ Compensation Costs,” for a discussion of our accounting for workers’ compensation costs.

• Payroll tax costs – Payroll taxes increased 9.1%, but decreased $1 on a per worksite employee per month basis, compared to the first quarter of 2014, primarily due to a 9.8%increase in payroll costs. Payroll taxes as a percentage of payroll cost were 8.8% in both the 2015 and the 2014 periods.

Operating Expenses

The following table presents certain information related to our operating expenses:

	Three Months Ended   March 31,						Three Months Ended   March 31,
	2015		2014		% Change		2015		2014		% Change
	(in thousands)						(per worksite employee per month)
Salaries, wages and payroll taxes	$	56,748	$	51,032	11.2	%	$	137	$	134	2.2	%
Stock-based compensation	2,423		2,400		1.0	%	6		6		—
Commissions	4,304		3,246		32.6	%	10		9		11.1	%
Advertising	3,718		4,941		(24.8	)%	9		13		(30.8	)%
General and administrative expenses	24,055		22,732		5.8	%	58		60		(3.3	)%
Impairment charges and other	9,807		—		—		24		—		—
Depreciation and amortization	5,285		5,234		1.0	%	13		14		(7.1	)%
Total operating expenses	$	106,340	$	89,585	18.7	%	$	257	$	236	8.9	%

Operating expenses increased18.7% to $106.3 million compared to $89.6 million in the first quarter of 2014.  We recorded $9.8 million of impairment and other charges in the first quarter of 2015. Adjusted operating expenses increased6.5% to $95.4 million compared to $89.6 million in the first quarter of 2014. Please read Note 4 to the Consolidated Financial Statements, “Assets Held for Sale” and “Non-GAAP Financial Measures” for additional information. Operating expenses per worksite employee per month increased to $257 in the 2015 period from $236 in the 2014 period.  The components of operating expenses changed as follows:

• Salaries, wages and payroll taxes of corporate and sales staff increased11.2%, or $3 per worksite employee per month, compared to the 2014 period.  This increase was primarily due to higher incentive compensation accruals as a result of improved operating results and a 0.9% increase in headcount.

• Stock-based compensation increased1.0%, but remained flat on a per worksite employee per month basis compared to the 2014 period.  Stock-based compensation expense represents amortization of restricted stock awards granted to employees.

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• Commissions expense increased32.6%, or $1 per worksite employee per month, compared to the 2014 period, primarily due to higher commission rates paid to district sales managers and higher commission expenses resulting from increased selling activity.

• Advertising costs decreased24.8%, or $4 per worksite employee per month, compared to the 2014 period, primarily due to changes in the timing of radio and television advertising spending.

• General and administrative expenses increased5.8%, but decreased $2 on a per worksite employee per month basis, compared to the 2014 period, primarily due to stockholder advisory related legal and consulting fees.

• Impairment and other charges consist of a $9.8 million charge representing the difference between the carrying value of the aircraft and their fair value, and includes a provision for potential settlement of a Texas sales and use tax assessment. Please read Note 4 to the Consolidated Financial Statements, “Assets Held for Sale” for additional information.

Income Tax Expense

Our effective income tax rate was 41.4% in the 2015 period compared to 42.4% in the 2014 period.  Our provision for income taxes differed from the U.S. statutory rate of 35% primarily due to state income taxes and non-deductible expenses.

Operating and Net Income

Operating and net income per worksite employee per month was $57 and $33 in the 2015 period, versus $44 and $25 in the 2014 period.

Non-GAAP Financial Measures

Non-GAAP financial measures are not prepared in accordance with GAAP and may be different from non-GAAP financial measures used by other companies. Non-GAAP financial measures should not be considered as a substitute for, or superior to, measures of financial performance prepared in accordance with GAAP. Investors are encouraged to review the reconciliation of the non-GAAP financial measures used to their most directly comparable GAAP financial measures as provided in the tables below.

Non-bonus payroll cost is a non-GAAP financial measure that excludes the impact of bonus payrolls paid to our worksite employees.  Bonus payroll cost varies from period to period, but has no direct impact to our ultimate workers’ compensation costs under the current program.  As a result, our management refers to non-bonus payroll cost in analyzing, reporting and forecasting our workers’ compensation costs.  We include these non-GAAP financial measures because we believe they are useful to investors in allowing for greater transparency related to the costs incurred under our current workers’ compensation program.  

Following is a GAAP to non-GAAP reconciliation of non-bonus payroll costs:

	Three Months Ended   March 31,
	2015		2014		% Change
	(in thousands, except per worksite employee per month data)
GAAP to non-GAAP reconciliation:
Payroll cost (GAAP)	$	3,240,982	$	2,950,568	9.8	%
Less: Bonus payroll cost	518,503		521,341		(0.5	)%
Non-bonus payroll cost	$	2,722,479	$	2,429,227	12.1	%
Payroll cost per worksite employee per month (GAAP)	$	7,831	$	7,788	0.6	%
Less: Bonus payroll cost per worksite employee per month	1,253		1,376		(8.9	)%
Non-bonus payroll cost per worksite employee per month	$	6,578	$	6,412	2.6	%

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Adjusted cash, cash equivalents and marketable securities excludes funds associated with federal and state income tax withholdings, employment taxes and other payroll deductions, as well as client prepayments. Insperity management believes adjusted cash, cash equivalents and marketable securities is a useful measure of the company’s available funds.

Following is a GAAP to non-GAAP reconciliation of cash, cash equivalents and marketable securities:

	March 31, 2015		December 31, 2014
	(in thousands)
Cash, cash equivalents and marketable securities (GAAP)	$	257,428	$	305,087
Less: Amounts payable for withheld federal and state income taxes, employment taxes and other payroll deductions	158,596		152,132
Customer prepayments	22,743		87,887
Adjusted cash, cash equivalents and marketable securities	$	76,089	$	65,068

Adjusted working capital represents working capital excluding assets held for sale that are classified as current assets and their associated current deferred tax liabilities. Insperity management believes adjusted working capital is a useful measure of the company’s liquidity, as it allows for additional analysis of the company’s liquidity separate from the impact of this item.

Following is a GAAP to non-GAAP reconciliation of working capital and adjusted adjusted working capital:

	March 31, 2015		December 31, 2014
	(in thousands)
Working capital (GAAP)	$	101,848	$	73,058
Less: Assets held for sale, net of current deferred tax liabilities	10,491		—
Adjusted working capital	$	91,357	$	73,058

Adjusted operating expenses represent operating expenses excluding the impact of impairment and other charges related to the valuation of aircraft held for sale and stockholder advisory expenses. Insperity management believes adjusted operating expenses is a useful measure of our operating costs, as it allows for additional analysis of our operating expenses separate from the impact of these items.

Following is a GAAP to non-GAAP reconciliation of operating expenses and adjusted operating expenses:

	Three Months Ended   March 31,
	2015		2014		Change
	(in thousands)
Operating expenses (GAAP)	$	106,340	$	89,585	18.7	%
Less: Impairment charges and other	9,807		—		—
Stockholder advisory expenses	1,148		—		—
Adjusted operating expenses	$	95,385	$	89,585	6.5	%

EBITDA represents net income computed in accordance with GAAP, plus interest expense, income tax expense and depreciation and amortization expense. Adjusted EBITDA represents EBITDA plus non-cash impairment and other charges, non-cash stock-based compensation and stockholder advisory expenses. Our management believes EBITDA and Adjusted EBITDA are often useful measures of our operating performance, as they allow for additional analysis of our operating results separate from the impact of these items.    

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Following is a GAAP to non-GAAP reconciliation of EBITDA and Adjusted EBITDA:

	Three Months Ended   March 31,
	2015		2014		% Change
	(in thousands)
Net income (GAAP)	$	13,787	$	9,564	44.2	%
Income tax expense	9,740		7,048		38.2	%
Interest expense	100		89		12.4	%
Depreciation and amortization	5,285		5,234		1.0	%
EBITDA	28,912		21,935		31.8	%
Impairment charges and other	9,807		—		—
Stock-based compensation	2,423		2,400		1.0	%
Stockholder advisory expenses	1,148		—		—
Adjusted EBITDA	$	42,290	$	24,335	73.8	%

Adjusted net income and adjusted diluted net income per share of common stock represent net income and diluted net income per share computed in accordance with GAAP, excluding the impact of non-cash impairment and other charges related to the valuation of aircraft held for sale, expenses related to stockholder advisory expenses and non-cash stock-based compensation. Our management believes adjusted net income and adjusted diluted net income per share of common stock are useful measures of our operating performance, as they allow for additional analysis of our operating results separate from the impact of these items.

Following is a GAAP to non-GAAP reconciliation of adjusted net income:

	Three Months Ended   March 31,
	2015		2014		% Change
	(in thousands)
Net income (GAAP)	$	13,787	$	9,564	44.2	%
Impairment charges and other, net of tax	5,747		—		—
Stock-based compensation, net of tax	1,420		1,382		2.7	%
Stockholder advisory expenses, net of tax	673		—		—
Adjusted net income	$	21,627	$	10,946	97.6	%

Following is a GAAP to non-GAAP reconciliation of adjusted diluted net income per share of common stock:

	Three Months Ended   March 31,
	2015		2014		% Change
	(in thousands)
Diluted net income per share of common stock (GAAP)	$	0.54	$	0.37	45.9	%
Impairment charges and other, net of tax	0.23		—		—
Stock-based compensation, net of tax	0.06		0.05		20.0	%
Stockholder advisory expenses, net of tax	0.03		—		—
Adjusted diluted net income per share of common stock	$	0.86	$	0.42	104.8	%

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Liquidity and Capital Resources

We periodically evaluate our liquidity requirements, capital needs and availability of resources in view of, among other things, our expansion plans, potential acquisitions and other operating cash needs.  To meet short-term liquidity requirements, which are primarily the payment of direct and operating expenses, we rely primarily on cash from operations.  Longer-term projects or significant acquisitions may be financed with debt or equity.  We have in the past sought, and may in the future seek, to raise additional capital or take other steps to increase or manage our liquidity and capital resources.  We had $257.4 million in cash, cash equivalents and marketable securities at March 31, 2015, of which approximately $158.6 million was payable in early April2015 for withheld federal and state income taxes, employment taxes and other payroll deductions, and approximately $22.7 million were customer prepayments that were payable in April2015.  At March 31, 2015, we had adjusted working capital of $91.4 million compared to $73.1 million at December 31, 2014.  We currently believe that our cash on hand, marketable securities, cash flows from operations and availability under our credit facility will be adequate to meet our liquidity requirements for the remainder of 2015.  We will rely on these same sources, as well as public and private debt or equity financing, to meet our longer-term liquidity and capital needs.

We have a $125 million revolving credit facility (“Facility”) with a syndicate of financial institutions.  The Facility is available for working capital and general corporate purposes, including acquisitions. As of March 31, 2015, we had an outstanding $0.6 million letter of credit issued under the Facility. Please read Note 5 to the Consolidated Financial Statements, “Revolving Credit Facility,” for additional information.

Cash Flows from Operating Activities

Net cash used in operating activities in 2015 was $38.0 million.  Our primary source of cash from operations is the comprehensive service fee and payroll funding we collect from our clients.  Our cash and cash equivalents, and thus our reported cash flows from operating activities are significantly impacted by various external and internal factors, which are reflected in part by the changes in our balance sheet accounts.  These include the following:

• Timing of client payments / payroll levels – We typically collect our comprehensive service fee, along with the client’s payroll funding, from clients at least one day prior to the payment of worksite employee payrolls and associated payroll taxes.  Therefore, the last business day of a reporting period has a substantial impact on our reporting of operating cash flows.  For example, many worksite employees are paid on Fridays; therefore, operating cash flows decrease in the reporting periods that end on a Friday or a Monday.  In the period ended March 31, 2015, the last business day of the reporting period was a Tuesday, client prepayments were $22.7 million and accrued worksite employee payroll was $223.6 million.  In the period ended March 31, 2014, the last business day of the reporting period was a Monday, client prepayments were $14.9 million and accrued worksite employee payroll was $187.3 million.

• Workers’ compensation plan funding – Under our workers’ compensation insurance arrangements, we make monthly payments to the carriers comprised of premium costs and funds to be set aside for payment of future claims (“claim funds”).  These pre-determined amounts are stipulated in our agreements with the carriers, and are based primarily on anticipated worksite employee payroll levels and workers’ compensation loss rates during the policy year.  Changes in payroll levels from those that were anticipated in the arrangements can result in changes in the amount of cash payments, which will impact our reporting of operating cash flows.  Our claim funds paid, based upon anticipated worksite employee payroll levels and workers’ compensation loss rates, were $13.4 million in the first three months of 2015 and $12.6 million in the first three months of 2014.  However, our estimate of workers’ compensation loss costs was $15.4 million in the 2015 period and $12.0 million in the 2014 period, respectively.

• Medical plan funding – Our health care contract with United establishes participant cash funding rates 90 days in advance of the beginning of a reporting quarter.  Therefore, changes in the participation level of the United plan have a direct impact on our operating cash flows.  In addition, changes to the funding rates, which are solely determined by United based primarily upon recent claim history and anticipated cost trends, also have a significant impact on our operating cash flows.  At March 31, 2015, premiums owed and cash funded to United have exceeded Plan Costs, resulting in a $36.2 million surplus, $27.2 million of which is reflected as a current asset, and $9.0 million of which is reflected as a long-term asset on our Consolidated Balance Sheets.  The premiums owed to United at March 31, 2015, were $22.0 million, which is included in accrued health insurance costs, a current liability, on our Consolidated Balance Sheets. Higher funding rates, as determined by United, resulted in a higher additional quarterly premium of $19.5 million at March 31, 2015 as compared to $12.8 million at December 31, 2014.

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• Operating results – Our net income has a significant impact on our operating cash flows.  Our net income increased44.2% to $13.8 million in the three months ended March 31, 2015, compared to $9.6 million in the three months ended March 31, 2014, due to higher gross profit. Please read “Results of Operations – Three Months Ended March 31, 2015 Compared to Three Months Ended March 31, 2014.”

Cash Flows from Investing Activities

Net cash flows used in investing activities were $2.9 million for the three months ended March 31, 2015, primarily due to property and equipment purchases of $2.4 million.

Cash Flows from Financing Activities

Net cash flows used in financing activities were $7.0 million for the three months ended March 31, 2015, including $5.7 million in stock repurchases and $4.8 million in dividends paid.

ITEM 3.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

We are primarily exposed to market risks from fluctuations in interest rates and the effects of those fluctuations on the market values of our cash equivalent short-term investments and our available-for-sale marketable securities.   In addition, borrowings under our Facility bear interest at a variable market rate.  As of March 31, 2015, we had an outstanding $0.6 million letter of credit issued under the Facility. Please read Note 5 to the Consolidated Financial Statements, “Revolving Credit Facility,” for additional information.  The cash equivalent short-term investments consist primarily of overnight investments, which are not significantly exposed to interest rate risk, except to the extent that changes in interest rates will ultimately affect the amount of interest income earned on these investments.  The available-for-sale marketable securities are subject to interest rate risk because these securities generally include a fixed interest rate.  As a result, the market values of these securities are affected by changes in prevailing interest rates.

We attempt to limit our exposure to interest rate risk primarily through diversification and low investment turnover.  Our investment policy is designed to maximize after-tax interest income while preserving our principal investment.  As a result, our marketable securities consist of tax-exempt short and intermediate-term debt securities, which are primarily pre-refunded municipal bonds that are secured by escrow funds containing U.S. Government securities.

ITEM 4.  CONTROLS AND PROCEDURES.

In accordance with the Securities Exchange Act of 1934 Rules 13a-15 and 15d-15, we carried out an evaluation, under the supervision and with the participation of management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of our disclosure controls and procedures as of the end of the period covered by this report.  Based on that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of March 31, 2015.

There has been no change in our internal controls over financial reporting that occurred during the three months ended March 31, 2015 that has materially affected, or is reasonably likely to materially affect, our internal controls over financial reporting.

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PART II

ITEM 1.  LEGAL PROCEEDINGS.

Please read Note 8 to the Consolidated Financial Statements, “Commitments and Contingencies,” which is incorporated herein by reference.

ITEM 1A.  RISK FACTORS.

Forward-Looking Statements

The statements contained herein that are not historical facts are forward-looking statements within the meaning of the federal securities laws (Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934). You can identify such forward-looking statements by the words “expects,” “intends,” “plans,” “projects,” “believes,” “estimates,” “likely,” “possibly,” “probably,” “goal,” “opportunity,” “objective,” “target,” “assume,” “outlook,” “guidance,” “predicts,” “appears,” “indicator” and similar expressions. Forward-looking statements involve a number of risks and uncertainties. In the normal course of business, Insperity, Inc., in an effort to help keep our stockholders and the public informed about our operations, may from time to time issue such forward-looking statements, either orally or in writing. Generally, these statements relate to business plans or strategies, projected or anticipated benefits or other consequences of such plans or strategies, or projections involving anticipated revenues, earnings, unit growth, profit per worksite employee, pricing, operating expenses or other aspects of operating results. We base the forward-looking statements on our expectations, estimates and projections at the time such statements are made. These statements are not guarantees of future performance and involve risks and uncertainties that we cannot predict. In addition, we have based many of these forward-looking statements on assumptions about future events that may prove to be inaccurate. Therefore, the actual results of the future events described in such forward-looking statements could differ materially from those stated in such forward-looking statements. Among the factors that could cause actual results to differ materially are: (i) adverse economic conditions; (ii) regulatory and tax developments and possible adverse application of various federal, state and local regulations; (iii) the ability to secure competitive replacement contracts for health insurance and workers’ compensation contracts at expiration of current contracts; (iv) increases in health insurance costs and workers’ compensation rates and underlying claims trends, health care reform, financial solvency of workers’ compensation carriers, other insurers or financial institutions, state unemployment tax rates, liabilities for employee and client actions or payroll-related claims; (v) failure to manage growth of our operations and the effectiveness of our sales and marketing efforts; (vi) the impact of the competitive environment in the PEO industry on our growth and/or profitability; (vii) our liability for worksite employee payroll, payroll taxes and benefits costs; (viii) our liability for disclosure of sensitive or private information; (ix) our ability to integrate or realize expected returns on our acquisitions; (x) failure of our information technology systems; (xi) an adverse final judgment or settlement of claims against Insperity; and (xii) disruptions to our business resulting from the actions of certain stockholders. These factors are discussed in further detail in our 2014 Annual Report on Form 10-K under “Factors That May Affect Future Results and the Market Price of Common Stock” on page 18, and elsewhere in this report.  Any of these factors, or a combination of such factors, could materially affect the results of our operations and whether forward-looking statements we make ultimately prove to be accurate.

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

The following table provides information about purchases by Insperity during the three months ended March 31, 2015, of equity securities that are registered by Insperity pursuant to Section 12 of the Exchange Act:

Period	Total Number of Shares Purchased(1)(2)	Average Price Paid per Share		Total Number of Shares Purchased as Part of Announced Program(1)	Maximum Number of Shares Available for Purchase under Announced Program(1)
01/01/2015 – 01/31/2015	—	$	—	—	768,765
02/01/2015 – 02/28/2015	113,050	50.59		—	768,765
03/01/2015 – 03/31/2015	—	—		—	768,765
Total	113,050	$	50.59	—

 ____________________________________

⁽¹⁾  Our Board has approved a program to repurchase shares of our outstanding common stock.  During the three months ended March 31, 2015, no shares were repurchased under the program and 113,050 shares were withheld to satisfy tax withholding obligations for the vesting of restricted stock awards.  As of March 31, 2015, we were authorized to repurchase an additional 768,765 shares under the program. Unless terminated earlier by resolution of the Board, the repurchase program will expire when we have repurchased all shares authorized for repurchase under the repurchase program.

⁽²⁾  These shares include shares of restricted stock that were withheld to satisfy tax-withholding obligations arising in conjunction with the vesting of restricted stock.  The required withholding is calculated using the closing sales price reported by the New York Stock Exchange on the date prior to the applicable vesting date.  These shares are not subject to the repurchase program described above.

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ITEM 6.  EXHIBITS.

(a) List of Exhibits

10.1	*	Amendment No. 3 to the Credit Agreement dated February 6, 2015 (incorporated by reference to Exhibit 10.29 to the Registrant’s Form 10-K for the year ended December 31, 2014).
10.2	*	Agreement, dated as of March 21, 2015, by and among Insperity, Inc. and Starboard Value LP and certain of its affiliates (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed on March 23, 2015).
10.3	*	Second Amendment to Insperity, Inc. 2012 Incentive Plan (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed on February 25, 2015).
10.4	*	First Amendment and Appendix A to Directors Compensation Plan (incorporated by reference to Exhibit 10.2 to the Registrant’s Current Report on Form 8-K filed on February 25, 2015).
10.5	*	Insperity, Inc. Long-Term Incentive Program (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed on April 2, 2015).
10.6	*	Form of Employee Award Notice and Agreement (incorporated by reference to Exhibit 10.2 to the Registrant’s Current Report on Form 8-K filed on April 2, 2015).
31.1	*	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	*	Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	**	Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	**	Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	*	XBRL Instance Document.(1)
101.SCH	*	XBRL Taxonomy Extension Schema Document.
101.CAL	*	XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF	*	XBRL Extension Definition Linkbase Document.
101.LAB	*	XBRL Taxonomy Extension Label Linkbase Document.
101.PRE	*	XBRL Taxonomy Extension Presentation Linkbase Document.

____________________________________
*	Filed with this report.
**	Furnished with this report.

⁽¹⁾  Attached as exhibit 101 to this report are the following documents formatted in XBRL (Extensible Business Reporting Language): (i) the Consolidated Statements of Operations for the three month periods ended March 31, 2015 and 2014; (ii) the Consolidated Statements of Comprehensive Income for the three month periods ended March 31, 2015 and 2014; (iii) the Consolidated Balance Sheets at March 31, 2015 and December 31, 2014; (iv) the Consolidated Statement of Stockholders’ Equity for the three month period ended March 31, 2015; (v) the Consolidated Statements of Cash Flows for the three month periods ended March 31, 2015 and 2014; and (vi) Notes to the Consolidated Financial Statements.

- 27 -

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.

	Insperity, Inc.
Date: May 1, 2015	By:	/s/ Douglas S. Sharp
		Douglas S. Sharp
		Senior Vice President of Finance,
		Chief Financial Officer and Treasurer
		(Principal Financial Officer)

- 28 -

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Paul J. Sarvadi, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Insperity, 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(s) 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 15d-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(s) 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: May 1, 2015
	/s/ Paul J. Sarvadi
	Paul J. Sarvadi
	Chairman of the Board and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Douglas S. Sharp, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Insperity, 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(s) 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 15d-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(s) 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: May 1, 2015
	/s/ Douglas S. Sharp
	Douglas S. Sharp
	Senior Vice President of Finance, Chief Financial Officer and Treasurer

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 Insperity, Inc. (the “Company”) on Form 10-Q for the period ending March 31, 2015, (the “Report”), as filed with the Securities and Exchange Commission on the date hereof, I, Paul J. Sarvadi, Chairman of the Board 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, to the best of my knowledge, that:

1. The Report fully complies with the requirements of section 13(a) or 15(d) 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 results of operations of the Company.

/s/ Paul J. Sarvadi

Paul J. Sarvadi

Chairman of the Board and Chief Executive Officer

May 1, 2015

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 Insperity, Inc. (the “Company”) on Form 10-Q for the period ending March 31, 2015, (the “Report”), as filed with the Securities and Exchange Commission on the date hereof, I, Douglas S. Sharp, Senior Vice President of Finance, Chief Financial Officer and Treasurer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge, that:

1. The Report fully complies with the requirements of section 13(a) or 15(d) 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 results of operations of the Company.

/s/ Douglas S. Sharp

Douglas S. Sharp

Senior Vice President of Finance,

Chief Financial Officer and Treasurer

May 1, 2015

XML

Stockholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Stockholders' Equity Note [Abstract]
Shares repurchased under the program (in shares)	0
Shares withheld for tax withholding obligations for the vesting of restricted stock awards (in shares)	113,050
Authorized to repurchased additional shares under repurchase program (in shares)	768,765
Dividends declared per share of common stock (in dollars per share)	$ 0.19	$ 0.17
Payments of Dividends	$ 4,844	$ 4,351

XML

Accounting Policies

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Accounting Policies

2. Accounting Policies

Health Insurance Costs

We provide group health insurance coverage to our worksite employees through a national network of carriers, including UnitedHealthcare (“United”), UnitedHealthcare of California, Kaiser Permanente, Blue Shield of California, HMSA BlueCross BlueShield, Unity Health Plan and Tufts, all of which provide fully insured policies or service contracts.

The policy with United provides the majority of our health insurance coverage. As a result of certain contractual terms, we have accounted for this plan since its inception using a partially self-funded insurance accounting model.  Accordingly, we record the costs of the United plan, including an estimate of the incurred claims, taxes and administrative fees (collectively the “Plan Costs”) as benefits expense in our Consolidated Statements of Operations.  The estimated incurred claims are based upon: (i) the level of claims processed during the quarter; (ii) estimated completion rates based upon recent claim development patterns under the plan; and (iii) the number of participants in the plan, including both active and COBRA enrollees.  Each reporting period, changes in the estimated ultimate costs resulting from claim trends, plan design and migration, participant demographics and other factors are incorporated into the Plan Costs.

Additionally, since the plan’s inception, under the terms of the contract, United establishes cash funding rates 90 days in advance of the beginning of a reporting quarter. If the Plan Costs for a reporting quarter are greater than the premiums paid and owed to United, a deficit in the plan would be incurred and a liability for the excess costs would be accrued in our Consolidated Balance Sheets. On the other hand, if the Plan Costs for the reporting quarter are less than the premiums paid and owed to United, a surplus in the plan would be incurred and we would record an asset for the excess premiums in our Consolidated Balance Sheets. The terms of the arrangement require us to maintain an accumulated cash surplus in the plan of $9.0 million, which is reported as long-term prepaid insurance. In addition, United requires a deposit equal to approximately one day of claims funding activity, which was $3.5 million as of March 31, 2015, and is reported as a long-term asset. As of March 31, 2015, Plan Costs were less than the net premiums paid and owed to United by $36.2 million. As this amount is in excess of the agreed-upon $9.0 million surplus maintenance level, the $27.2 million balance is included in prepaid insurance, a current asset, in our Consolidated Balance Sheets. The premiums owed to United at March 31, 2015 were $22.0 million, which is included in accrued health insurance costs, a current liability in our Consolidated Balance Sheets.

Workers’ Compensation Costs

Our workers’ compensation coverage has been provided through an arrangement with the ACE Group of Companies (the “ACE Program”) since 2007. The ACE Program is fully insured in that ACE has the responsibility to pay all claims incurred regardless of whether we satisfy our responsibilities. We bear the economic burden for the first $1 million layer of claims per occurrence, as well as a maximum aggregate amount of $5 million per policy year for those claims that exceed $1 million. The insurance carrier bears responsibility for the claims in excess of such amounts.

Because we bear the economic burden for claims up to the levels noted above, such claims, which are the primary component of our workers’ compensation costs, are recorded in the period incurred. Workers’ compensation insurance includes ongoing health care and indemnity coverage whereby claims are paid over numerous years following the date of injury. Accordingly, the accrual of related incurred costs in each reporting period includes estimates, which take into account the ongoing development of claims and therefore requires a significant level of judgment.

We employ a third party actuary to estimate our loss development rate, which is primarily based upon the nature of worksite employees’ job responsibilities, the location of worksite employees, the historical frequency and severity of workers’ compensation claims, and an estimate of future cost trends. Each reporting period, changes in the actuarial assumptions resulting from changes in actual claims experience and other trends are incorporated into our workers’ compensation claims cost estimates. Workers’ compensation cost estimates are discounted to present value at a rate based upon the U.S. Treasury rates that correspond with the weighted average estimated claim payout period (the average discount rate utilized in the 2015 and 2014 periods was 1.0% in both periods) and are accreted over the estimated claim payment period and included as a component of direct costs in our Consolidated Statements of Operations.

The following table presents the activity and balances related to incurred but not paid workers’ compensation claims:

	Three Months Ended   March 31,
	2015			2014
	(in thousands)
Beginning balance, January 1,	$	136,088		$	120,833
Accrued claims	15,958			12,453
Present value discount	(570		)	(439		)
Paid claims	(10,549		)	(9,399		)
Ending balance	$	140,927		$	123,448
Current portion of accrued claims	$	45,152		$	52,163
Long-term portion of accrued claims	95,775			71,285
	$	140,927		$	123,448

The current portion of accrued workers’ compensation costs on our Consolidated Balance Sheets at March 31, 2015 includes $2.1 million of workers’ compensation administrative fees.

As of March 31, 2015 and 2014, the undiscounted accrued workers’ compensation costs were $150.6 million and $133.6 million, respectively.

At the beginning of each policy period, the insurance carrier establishes monthly funding requirements comprised of premium costs and funds to be set aside for payment of future claims (“claim funds”). The level of claim funds is primarily based upon anticipated worksite employee payroll levels and expected workers’ compensation loss rates, as determined by the insurance carrier. Monies funded into the program for incurred claims expected to be paid within one year are recorded as restricted cash, a short-term asset, while the remainder of claim funds are included in deposits, a long-term asset in our Consolidated Balance Sheets. As of March 31, 2015, we had restricted cash of $45.2 million and deposits of $115.6 million.

Our estimate of incurred claim costs expected to be paid within one year is recorded as accrued workers’ compensation costs and included in short-term liabilities, while our estimate of incurred claim costs expected to be paid beyond one year is included in long-term liabilities on our Consolidated Balance Sheets.

XML

Basis of Presentation

3 Months Ended

Mar. 31, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

1. Basis of Presentation

Insperity, Inc., a Delaware corporation (“Insperity,” “we,” “our,” and “us”), provides an array of human resources (“HR”) and business solutions designed to help improve business performance.  Our most comprehensive HR service offerings are provided through our professional employer organization (“PEO”) services, known as Workforce Optimization^® and Workforce Synchronization solutions (together, our “PEO HR Outsourcing solutions”), which encompass a broad range of HR functions, including payroll and employment administration, employee benefits, workers’ compensation, government compliance, performance management, and training and development services.

In addition to our PEO HR Outsourcing solutions, we offer Human Capital Management, Payroll Services, Time and Attendance, Performance Management, Organizational Planning, Recruiting Services, Employment Screening, Financial and Expense Management Services, Retirement Services and Insurance Services (collectively “Strategic Businesses” and formerly known as “Adjacent Businesses”), many of which are offered via desktop applications or cloud-based delivery models.  These other products and services are offered separately, in customizable bundles, or along with PEO HR Outsourcing solutions.

The Consolidated Financial Statements include the accounts of Insperity and its subsidiaries, all of which are wholly owned.  Intercompany accounts and transactions have been eliminated in consolidation.

The preparation of financial statements in conformity with accounting principles generally accepted in the United States (“GAAP”) requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes.  Actual results could differ from those estimates.

The accompanying Consolidated Financial Statements should be read in conjunction with our audited Consolidated Financial Statements at and for the year ended December 31, 2014. Our Consolidated Balance Sheet at December 31, 2014 has been derived from the audited financial statements at that date, but does not include all of the information or footnotes required by GAAP for complete financial statements.  Our Consolidated Balance Sheet at March 31, 2015 and our Consolidated Statements of Operations and Comprehensive Income for the three month periods ended March 31, 2015 and 2014, our Consolidated Statements of Cash Flows for the three month periods ended March 31, 2015 and 2014, and our Consolidated Statement of Stockholders’ Equity for the three month period ended March 31, 2015, have been prepared by us without audit. In the opinion of management, all adjustments, consisting only of normal recurring adjustments necessary to present fairly the consolidated financial position, results of operations and cash flows, have been made. Certain prior year amounts have been reclassified to conform to the 2015 presentation.

The results of operations for the interim periods are not necessarily indicative of the operating results for a full year or of future operations.

XML

CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 228,588	$ 276,456
Restricted cash	45,152	44,040
Marketable securities	28,840	28,631
Accounts receivable, net:
Trade	3,740	12,010
Unbilled	252,931	160,154
Other	3,107	2,952
Prepaid insurance	36,660	21,301
Assets held for sale	13,495	0
Other current assets	21,080	17,649
Deferred income taxes	0	6,316
Total current assets	633,593	569,509
Property and equipment:
Land	5,214	5,214
Buildings and improvements	71,008	70,471
Computer hardware and software	89,367	89,204
Software development costs	41,987	41,314
Furniture, fixtures and other	38,641	38,617
Aircraft	0	35,866
Total property and equipment, gross	246,217	280,686
Accumulated depreciation and amortization	(187,102)	(196,341)
Total property and equipment, net	59,115	84,345
Other assets:
Prepaid health insurance	9,000	9,000
Deposits – health insurance	3,700	3,700
Deposits – workers’ compensation	115,640	113,934
Goodwill and other intangible assets, net	14,232	14,457
Deferred income taxes	3,588	0
Other assets	1,753	1,725
Total other assets	147,913	142,816
Total assets	840,621	796,670
Current liabilities:
Accounts payable	3,061	4,674
Payroll taxes and other payroll deductions payable	176,667	176,341
Accrued worksite employee payroll cost	223,564	192,396
Accrued health insurance costs	25,589	18,329
Accrued workers’ compensation costs	47,225	45,592
Accrued corporate payroll and commissions	23,068	32,644
Other accrued liabilities	25,347	22,444
Deferred income taxes	6,944	0
Income taxes payable	280	4,031
Total current liabilities	531,745	496,451
Noncurrent liabilities:
Accrued workers’ compensation costs	95,775	92,048
Deferred income taxes	0	4,075
Total noncurrent liabilities	95,775	96,123
Commitments and contingencies
Stockholders’ equity:
Common stock	308	308
Additional paid-in capital	140,963	137,769
Treasury stock, at cost	(151,599)	(148,465)
Accumulated other comprehensive income, net of tax	5	3
Retained earnings	223,424	214,481
Total stockholders’ equity	213,101	204,096
Total liabilities and stockholders’ equity	$ 840,621	$ 796,670

XML

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) (USD $) In Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income [Member]	Retained Earnings [Member]
Balance at Dec. 31, 2014	$ 204,096	$ 308	$ 137,769	$ (148,465)	$ 3	$ 214,481
Balance (shares) at Dec. 31, 2014		30,758
Purchase of treasury stock, at cost	(5,719)	0	0	(5,719)	0	0
Exercise of stock options	374	0	(3)	377	0	0
Income tax benefit from stock-based compensation, net	2,697	0	2,697	0	0	0
Stock-based compensation expense	2,423	0	434	1,989	0	0
Other	285	0	66	219	0	0
Dividends paid	(4,844)	0	0	0	0	(4,844)
Unrealized gain on marketable securities, net of tax	2	0	0	0	2	0
Net income	13,787	0	0	0	0	13,787
Balance at Mar. 31, 2015	$ 213,101	$ 308	$ 140,963	$ (151,599)	$ 5	$ 223,424
Balance (shares) at Mar. 31, 2015		30,758

XML

Cash, Cash Equivalents and Marketable Securities (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Overnight Holdings
Money market funds (cash equivalents)	$ 207,220,000	$ 271,840,000
Investment Holdings
Money market funds (cash equivalents)	13,882,000	14,125,000
Marketable securities	28,840,000	28,631,000
Total cash equivalents and marketable securities	249,942,000	314,596,000
Cash held in demand accounts	21,417,000	20,369,000
Outstanding checks	(13,931,000)	(29,878,000)
Total cash, cash equivalents and marketable securities	257,428,000	305,087,000
Cash and cash equivalents	228,588,000	276,456,000	213,518,000	225,755,000
Marketable securities	28,840,000	28,631,000
Withholding associated with federal and state income taxes, employment taxes and other payroll deductions included in cash balance	158,600,000	152,100,000
Client prepayments included in cash balance	22,700,000	87,900,000
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Municipal bonds	28,840,000	28,631,000
Available-for-sale marketable securities [Abstract]
Amortized Cost	28,831,000	28,626,000
Gross Unrealized Gains	15,000	16,000
Gross Unrealized Losses	(6,000)	(11,000)
Municipal bonds	28,840,000	28,631,000
Contractual maturities amortized cost [Abstract]
Less than one year	15,324,000
One to five years	13,507,000
Amortized Cost	28,831,000	28,626,000
Contractual maturities estimated fair value [Abstract]
Less than one year	15,332,000
One to five years	13,508,000
Municipal bonds	28,840,000	28,631,000
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	221,102,000	285,965,000
Municipal bonds	0	0
Total	221,102,000	285,965,000
Available-for-sale marketable securities [Abstract]
Municipal bonds	0	0
Contractual maturities estimated fair value [Abstract]
Municipal bonds	0	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	0	0
Municipal bonds	28,840,000	28,631,000
Total	28,840,000	28,631,000
Available-for-sale marketable securities [Abstract]
Municipal bonds	28,840,000	28,631,000
Contractual maturities estimated fair value [Abstract]
Municipal bonds	28,840,000	28,631,000
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	0	0
Municipal bonds	0	0
Total	0	0
Available-for-sale marketable securities [Abstract]
Municipal bonds	0	0
Contractual maturities estimated fair value [Abstract]
Municipal bonds	0	0
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	221,102,000	285,965,000
Municipal bonds	28,840,000	28,631,000
Total	249,942,000	314,596,000
Available-for-sale marketable securities [Abstract]
Municipal bonds	28,840,000	28,631,000
Contractual maturities estimated fair value [Abstract]
Municipal bonds	$ 28,840,000	$ 28,631,000

XML

Revolving Credit Facility (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015
Debt Disclosure [Abstract]
Current borrowing capacity	$ 125
Maximum borrowing capacity	150
Letters of Credit Outstanding, Amount	$ 0.6

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CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$ 13,787	$ 9,564
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	5,285	5,234
Impairment charges and other	9,807	0
Amortization of marketable securities	316	510
Stock-based compensation	2,423	2,400
Deferred income taxes	5,594	6,387
Changes in operating assets and liabilities:
Restricted cash	(1,112)	(234)
Accounts receivable	(84,662)	(12,390)
Prepaid insurance	(15,359)	(24,155)
Other current assets	(3,432)	(7,175)
Other assets	(1,642)	(2,964)
Accounts payable	(1,613)	(87)
Payroll taxes and other payroll deductions payable	326	(1,619)
Accrued worksite employee payroll expense	31,168	13,510
Accrued health insurance costs	7,260	20,605
Accrued workers’ compensation costs	5,360	2,837
Accrued corporate payroll, commissions and other accrued liabilities	(7,473)	5,340
Income taxes payable/receivable	(3,983)	(8,872)
Total adjustments	(51,737)	(673)
Net cash provided by (used in) operating activities	(37,950)	8,891
Marketable securities:
Purchases	(3,964)	(7,668)
Proceeds from dispositions	824	0
Proceeds from maturities	2,620	6,595
Property and equipment	(2,423)	(2,379)
Net cash used in investing activities	(2,943)	(3,452)
Cash flows from financing activities:
Purchase of treasury stock	(5,719)	(13,884)
Dividends paid	(4,844)	(4,351)
Proceeds from the exercise of stock options	374	163
Income tax benefit from stock-based compensation	2,929	78
Other	285	318
Net cash used in financing activities	(6,975)	(17,676)
Net decrease in cash and cash equivalents	(47,868)	(12,237)
Cash and cash equivalents at beginning of period	276,456	225,755
Cash and cash equivalents at end of period	$ 228,588	$ 213,518

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CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Revenues (gross billings of $3.940 billion and $3.588 billion, less worksite employee payroll cost of $3.241 billion and $2.951 billion, respectively)	$ 699,479	$ 636,999
Direct costs:
Payroll taxes, benefits and workers’ compensation costs	569,619	530,823
Gross profit	129,860	106,176
Operating expenses:
Salaries, wages and payroll taxes	56,748	51,032
Stock-based compensation	2,423	2,400
Commissions	4,304	3,246
Advertising	3,718	4,941
General and administrative expenses	24,055	22,732
Impairment charges and other	9,807	0
Depreciation and amortization	5,285	5,234
Total operating expenses	106,340	89,585
Operating income	23,520	16,591
Other income (expense):
Interest, net	7	47
Other, net	0	(26)
Income before income tax expense	23,527	16,612
Income tax expense	9,740	7,048
Net income	13,787	9,564
Net income allocated to common shares	355	282
Net income allocated to common shares	$ 13,432	$ 9,282
Basic net income per share of common stock (in dollars per share)	$ 0.54	$ 0.37
Diluted net income per share of common stock (in dollars per share)	$ 0.54	$ 0.37

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Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Activity and balances related to incurred but not paid workers' compensation claims

The following table presents the activity and balances related to incurred but not paid workers’ compensation claims:

	Three Months Ended   March 31,
	2015			2014
	(in thousands)
Beginning balance, January 1,	$	136,088		$	120,833
Accrued claims	15,958			12,453
Present value discount	(570		)	(439		)
Paid claims	(10,549		)	(9,399		)
Ending balance	$	140,927		$	123,448
Current portion of accrued claims	$	45,152		$	52,163
Long-term portion of accrued claims	95,775			71,285
	$	140,927		$	123,448

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Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 24, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	INSPERITY, INC.
Entity Central Index Key	0001000753
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		25,504,362
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2015

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Cash, Cash Equivalents and Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2015

Cash, Cash Equivalents and Marketable Securities [Abstract]

Summary of investments in cash, cash equivalents and marketable securities

The following table summarizes our cash and investments in cash equivalents and marketable securities held by investment managers and overnight investments:

	March 31, 2015			December 31, 2014
	(in thousands)
Overnight Holdings
Money market funds (cash equivalents)	$	207,220		$	271,840
Investment Holdings
Money market funds (cash equivalents)	13,882			14,125
Marketable securities	28,840			28,631
	249,942			314,596
Cash held in demand accounts	21,417			20,369
Outstanding checks	(13,931		)	(29,878		)
Total cash, cash equivalents and marketable securities	$	257,428		$	305,087
Cash and cash equivalents	$	228,588		$	276,456
Marketable securities	28,840			28,631
Total cash, cash equivalents and marketable securities	$	257,428		$	305,087

Summary of fair value measurements of financial assets

The following table summarizes the levels of fair value measurements of our financial assets:

	Fair Value Measurements
	(in thousands)
	March 31, 2015		Level 1		Level 2		Level 3
Money market funds	$	221,102	$	221,102	$	—	$	—
Municipal bonds	28,840		—		28,840		—
Total	$	249,942	$	221,102	$	28,840	$	—

	Fair Value Measurements
	(in thousands)
	December 31, 2014		Level 1		Level 2		Level 3
Money market funds	$	285,965	$	285,965	$	—	$	—
Municipal bonds	28,631		—		28,631		—
Total	$	314,596	$	285,965	$	28,631	$	—

Summary of available-for-sale securities

The following is a summary of our available-for-sale marketable securities:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
			(in thousands)
March 31, 2015
Municipal bonds	$	28,831	$	15	$	(6	)	$	28,840
December 31, 2014
Municipal bonds	$	28,626	$	16	$	(11	)	$	28,631

Contractual maturities of marketable securities

As of March 31, 2015, the contractual maturities of our marketable securities were as follows:

	Amortized Cost		Estimated Fair Value
	(in thousands)
Less than one year	$	15,324	$	15,332
One to five years	13,507		13,508
Total	$	28,831	$	28,840

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CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (Parenthetical) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Gross billings	$ 3,940	$ 3,588
Worksite employee payroll costs	$ 3,241	$ 2,951

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Revolving Credit Facility

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Revolving Credit Facility

5. Revolving Credit Facility

We have a $125 million revolving credit facility (the “Facility”), which may be increased to $150 million based on the terms and subject to the conditions set forth in the agreement relating to the Facility (the “Credit Agreement”). The Facility matures in February 2020.  The Facility contains both affirmative and negative covenants, which we believe are customary for arrangements of this nature.  At March 31, 2015, we were in compliance with all financial covenants under the Credit Agreement and had not drawn on the Facility. As of March 31, 2015, we had an outstanding $0.6 million letter of credit issued under the Facility.

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Assets Held for Sale (Notes)

3 Months Ended

Mar. 31, 2015

Property, Plant and Equipment Assets Held-for-sale Disclosure [Abstract]

Disclosure of Long Lived Assets Held-for-sale [Table Text Block]

4. Assets Held for Sale

In the first quarter of 2015, we entered into a plan to sell our two aircraft, and as a result, reclassified the assets from property, plant and equipment to assets held for sale. We also recorded impairment and other charges of $9.8 million, which represents the difference between the carrying value and the fair value and includes a provision for potential settlement of a Texas sales and use tax assessment. The fair value of assets held for sale of $13.5 million was determined based on the estimated selling price less costs incurred to sell and was classified as Level 2 in the fair value hierarchy. As of March 31, 2015, we had current deferred tax liabilities of $3.0 million related to these assets held for sale.

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Assets Held for Sale (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Property, Plant and Equipment Assets Held-for-sale Disclosure [Abstract]
Impairment charges and other	$ 9,807,000	$ 0
Assets held for sale	13,495,000		0
Deferred tax liabilites related to aircraft classified as assets held for sale	$ 3,000,000

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Stockholders' Equity Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2015

Stockholders' Equity Attributable to Parent [Abstract]

Quarterly dividends declared [Table Text Block]

The Board declared quarterly dividends as follows:

	2015		2014
	(amounts per share)
First quarter	$	0.19	$	0.17

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

8. Commitments and Contingencies

We are a defendant in various lawsuits and claims arising in the normal course of business.  Management believes it has valid defenses in these cases and is defending them vigorously.  While the results of litigation cannot be predicted with certainty, management believes the final outcome of such litigation will not have a material adverse effect on our financial position or results of operations.

Federal Unemployment Taxes

Employers in certain states are experiencing higher Federal Unemployment Tax Act (“FUTA”) tax rates as a result of certain states not repaying their unemployment loans from the federal government in a timely manner. The Benefit Cost Ratio Add-On (“BCR”) is an additional tax on the FUTA wage base for employers in states that continue to have outstanding federal unemployment insurance loans beginning with the fifth year in which there is a balance due on the loan. States have the option to apply for a waiver before July 1^st of the year in which the BCR is applicable. Seven states are at risk for assessment of the BCR in 2015. We expect most states will be notified by the federal government in the third quarter of 2015 if a waiver has been granted in response to the state’s application. Accordingly, the potential additional FUTA tax associated with worksite employees in these seven states was approximately $3.5 million as of March 31, 2015.

Generally, our contractual agreements allow us to incorporate such increases into our service fees upon the effective date of the rate change.  However, our ability to fully adjust service fees in our billing systems and collect such increases over the remaining term of the customers’ contracts could be limited, resulting in a potential tax increase not being fully recovered.  As a result, if these FUTA tax increases are instituted and not collected from our clients, such increases could have a material adverse effect on our financial condition or results of operations.

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Stockholders' Equity

3 Months Ended

Mar. 31, 2015

Stockholders' Equity Note [Abstract]

Stockholders Equity

6. Stockholders' Equity

Our Board of Directors (the “Board”) has authorized a program to repurchase shares of our outstanding common stock (“Repurchase Program”).  The purchases are to be made from time to time in the open market or directly from stockholders at prevailing market prices based on market conditions and other factors. During the three months ended March 31, 2015, no shares were repurchased under the Repurchase Program and 113,050 shares not subject to the Repurchase Program were withheld to satisfy tax withholding obligations for the vesting of restricted stock awards.  As of March 31, 2015, we were authorized to repurchase an additional 768,765 shares under the Repurchase Program.

The Board declared quarterly dividends as follows:

	2015		2014
	(amounts per share)
First quarter	$	0.19	$	0.17

 During the three months ended March 31, 2015 and 2014, we paid dividends totaling $4.8 million and $4.4 million, respectively.

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Net Income Per Share

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Net Income per Share

7. Net Income per Share

We utilize the two-class method to compute net income per share.  The two-class method allocates a portion of net income to participating securities, which include unvested awards of share-based payments with non-forfeitable rights to receive dividends.  Net income allocated to unvested share-based payments is excluded from net income allocated to common shares.  Any undistributed losses resulting from dividends exceeding net income are not allocated to participating securities.  Basic net income per share is computed by dividing net income allocated to common shares by the weighted average number of common shares outstanding during the period.  Diluted net income per share is computed by dividing net income allocated to common shares by the weighted average number of common shares outstanding during the period, plus the dilutive effect of outstanding stock options.

The following table summarizes the net income allocated to common shares and the basic and diluted shares used in the net income per share computations:

	Three Months Ended   March 31,
	2015			2014
	(in thousands)
Net income	$	13,787		$	9,564
Less distributed and undistributed earnings allocated to participating securities	(355		)	(282		)
Net income allocated to common shares	$	13,432		$	9,282
Weighted average common shares outstanding	24,716			24,823
Incremental shares from assumed conversions of common stock options	8			7
Adjusted weighted average common shares outstanding	24,724			24,830
Potentially dilutive securities not included in weighted average share calculation due to anti-dilutive effect	—			—

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Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Health Insurance Costs

Health Insurance Costs

We provide group health insurance coverage to our worksite employees through a national network of carriers, including UnitedHealthcare (“United”), UnitedHealthcare of California, Kaiser Permanente, Blue Shield of California, HMSA BlueCross BlueShield, Unity Health Plan and Tufts, all of which provide fully insured policies or service contracts.

The policy with United provides the majority of our health insurance coverage. As a result of certain contractual terms, we have accounted for this plan since its inception using a partially self-funded insurance accounting model.  Accordingly, we record the costs of the United plan, including an estimate of the incurred claims, taxes and administrative fees (collectively the “Plan Costs”) as benefits expense in our Consolidated Statements of Operations.  The estimated incurred claims are based upon: (i) the level of claims processed during the quarter; (ii) estimated completion rates based upon recent claim development patterns under the plan; and (iii) the number of participants in the plan, including both active and COBRA enrollees.  Each reporting period, changes in the estimated ultimate costs resulting from claim trends, plan design and migration, participant demographics and other factors are incorporated into the Plan Costs.

Additionally, since the plan’s inception, under the terms of the contract, United establishes cash funding rates 90 days in advance of the beginning of a reporting quarter. If the Plan Costs for a reporting quarter are greater than the premiums paid and owed to United, a deficit in the plan would be incurred and a liability for the excess costs would be accrued in our Consolidated Balance Sheets. On the other hand, if the Plan Costs for the reporting quarter are less than the premiums paid and owed to United, a surplus in the plan would be incurred and we would record an asset for the excess premiums in our Consolidated Balance Sheets. The terms of the arrangement require us to maintain an accumulated cash surplus in the plan of $9.0 million, which is reported as long-term prepaid insurance. In addition, United requires a deposit equal to approximately one day of claims funding activity, which was $3.5 million as of March 31, 2015, and is reported as a long-term asset. As of March 31, 2015, Plan Costs were less than the net premiums paid and owed to United by $36.2 million. As this amount is in excess of the agreed-upon $9.0 million surplus maintenance level, the $27.2 million balance is included in prepaid insurance, a current asset, in our Consolidated Balance Sheets. The premiums owed to United at March 31, 2015 were $22.0 million, which is included in accrued health insurance costs, a current liability in our Consolidated Balance Sheets.

Workers' Compensation Costs

Workers’ Compensation Costs

Our workers’ compensation coverage has been provided through an arrangement with the ACE Group of Companies (the “ACE Program”) since 2007. The ACE Program is fully insured in that ACE has the responsibility to pay all claims incurred regardless of whether we satisfy our responsibilities. We bear the economic burden for the first $1 million layer of claims per occurrence, as well as a maximum aggregate amount of $5 million per policy year for those claims that exceed $1 million. The insurance carrier bears responsibility for the claims in excess of such amounts.

Because we bear the economic burden for claims up to the levels noted above, such claims, which are the primary component of our workers’ compensation costs, are recorded in the period incurred. Workers’ compensation insurance includes ongoing health care and indemnity coverage whereby claims are paid over numerous years following the date of injury. Accordingly, the accrual of related incurred costs in each reporting period includes estimates, which take into account the ongoing development of claims and therefore requires a significant level of judgment.

We employ a third party actuary to estimate our loss development rate, which is primarily based upon the nature of worksite employees’ job responsibilities, the location of worksite employees, the historical frequency and severity of workers’ compensation claims, and an estimate of future cost trends. Each reporting period, changes in the actuarial assumptions resulting from changes in actual claims experience and other trends are incorporated into our workers’ compensation claims cost estimates. Workers’ compensation cost estimates are discounted to present value at a rate based upon the U.S. Treasury rates that correspond with the weighted average estimated claim payout period (the average discount rate utilized in the 2015 and 2014 periods was 1.0% in both periods) and are accreted over the estimated claim payment period and included as a component of direct costs in our Consolidated Statements of Operations.

The following table presents the activity and balances related to incurred but not paid workers’ compensation claims:

	Three Months Ended   March 31,
	2015			2014
	(in thousands)
Beginning balance, January 1,	$	136,088		$	120,833
Accrued claims	15,958			12,453
Present value discount	(570		)	(439		)
Paid claims	(10,549		)	(9,399		)
Ending balance	$	140,927		$	123,448
Current portion of accrued claims	$	45,152		$	52,163
Long-term portion of accrued claims	95,775			71,285
	$	140,927		$	123,448

The current portion of accrued workers’ compensation costs on our Consolidated Balance Sheets at March 31, 2015 includes $2.1 million of workers’ compensation administrative fees.

As of March 31, 2015 and 2014, the undiscounted accrued workers’ compensation costs were $150.6 million and $133.6 million, respectively.

At the beginning of each policy period, the insurance carrier establishes monthly funding requirements comprised of premium costs and funds to be set aside for payment of future claims (“claim funds”). The level of claim funds is primarily based upon anticipated worksite employee payroll levels and expected workers’ compensation loss rates, as determined by the insurance carrier. Monies funded into the program for incurred claims expected to be paid within one year are recorded as restricted cash, a short-term asset, while the remainder of claim funds are included in deposits, a long-term asset in our Consolidated Balance Sheets. As of March 31, 2015, we had restricted cash of $45.2 million and deposits of $115.6 million.

Our estimate of incurred claim costs expected to be paid within one year is recorded as accrued workers’ compensation costs and included in short-term liabilities, while our estimate of incurred claim costs expected to be paid beyond one year is included in long-term liabilities on our Consolidated Balance Sheets.

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Accounting Policies (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Oct. 01, 2010
Health Insurance Costs [Abstract]
Number of days in advance of the beginning of a reporting quarter United establishes cash funding rates	90 days
Required accumulated cash surplus	$ 9,000,000		$ 9,000,000
Required deposit equal to approximately one day of claims funding activity	3,500,000
Amount which plan costs were less than the net premiums paid and owed	36,200,000
Prepaid health insurance, current	27,200,000
Premiums owed to United	22,000,000
Workers' Compensation Costs [Abstract]
Company's maximum economic burden for the first layer of claims per occurrence				1,000,000
Company's maximum aggregate economic burden for claims in excess of 1 million per policy year				5,000,000
U.S. Treasury rates that correspond with the weighted average estimated claim payout period (in hundredths)	1.00%	1.00%
Incurred but not paid workers compensation liabilities [Abstract]
Beginning balance, January 1,	136,088,000	120,833,000
Accrued claims	15,958,000	12,453,000
Present value discount	(570,000)	(439,000)
Paid claims	(10,549,000)	(9,399,000)
Ending balance	140,927,000	123,448,000
Current portion of accrued claims	45,152,000	52,163,000
Long-term portion of accrued claims	95,775,000	71,285,000	92,048,000
Ending balance	140,927,000	123,448,000
Workers compensation administrative fees accrued	2,100,000
Undiscounted accrued workers' compensation costs	150,600,000	133,600,000
Time period incurred claims expected to be paid recorded as restricted cash	1 year
Time period incurred claims expected to be paid, included in deposits, a long-term asset	Greater than 1 year
Return of excess claim funds related to ACE Program	0
Restricted cash - worker's compensation	45,152,000		44,040,000
Deposits workers compensation	$ 115,640,000		$ 113,934,000
Time period estimate of incurred claim costs to be paid included in short-term liabilities	1 year
Time period incurred claims expected to be paid, included in long-term liabilities	Greater than 1 year

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Net Income per Share (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Net income	$ 13,787	$ 9,564
Net income allocated to common shares	355	282
Net income allocated to common shares	$ 13,432	$ 9,282
Weighted average common shares outstanding (in shares)	24,716	24,823
Incremental shares from assumed conversions of common stock options (in shares)	8	7
Adjusted weighted average common shares outstanding (in shares)	24,724	24,830
Potentially dilutive securities not included in weighted average share calculation due to anti-dilutive effect (in shares)	0	0

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 13,787	$ 9,564
Other comprehensive income:
Unrealized gain (loss) on available-for-sale securities, net of tax	2	(3)
Comprehensive income	$ 13,789	$ 9,561

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Cash, Cash Equivalents and Marketable Securities

3 Months Ended

Mar. 31, 2015

Cash, Cash Equivalents and Marketable Securities [Abstract]

Cash, Cash Equivalents and Marketable Securities

3. Cash, Cash Equivalents and Marketable Securities

The following table summarizes our cash and investments in cash equivalents and marketable securities held by investment managers and overnight investments:

	March 31, 2015			December 31, 2014
	(in thousands)
Overnight Holdings
Money market funds (cash equivalents)	$	207,220		$	271,840
Investment Holdings
Money market funds (cash equivalents)	13,882			14,125
Marketable securities	28,840			28,631
	249,942			314,596
Cash held in demand accounts	21,417			20,369
Outstanding checks	(13,931		)	(29,878		)
Total cash, cash equivalents and marketable securities	$	257,428		$	305,087
Cash and cash equivalents	$	228,588		$	276,456
Marketable securities	28,840			28,631
Total cash, cash equivalents and marketable securities	$	257,428		$	305,087

Our cash and overnight holdings fluctuate based on the timing of clients’ payroll processing cycles.  Included in the cash, cash equivalents and marketable securities at March 31, 2015 and December 31, 2014, are $158.6 million and $152.1 million, respectively, of funds associated with federal and state income tax withholdings, employment taxes and other payroll deductions, as well as $22.7 million and $87.9 million in client prepayments, respectively.

We account for our financial assets in accordance with Accounting Standard Codification 820, Fair Value Measurement.  This standard defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements.  The fair value measurement disclosures are grouped into three levels based on valuation factors:

• Level 1 - quoted prices in active markets using identical assets

• Level 2 - significant other observable inputs, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other observable inputs

• Level 3 - significant unobservable inputs

The following table summarizes the levels of fair value measurements of our financial assets:

	Fair Value Measurements
	(in thousands)
	March 31, 2015		Level 1		Level 2		Level 3
Money market funds	$	221,102	$	221,102	$	—	$	—
Municipal bonds	28,840		—		28,840		—
Total	$	249,942	$	221,102	$	28,840	$	—

	Fair Value Measurements
	(in thousands)
	December 31, 2014		Level 1		Level 2		Level 3
Money market funds	$	285,965	$	285,965	$	—	$	—
Municipal bonds	28,631		—		28,631		—
Total	$	314,596	$	285,965	$	28,631	$	—

The municipal bond securities valued as Level 2 investments are primarily pre-refunded municipal bonds that are secured by escrow funds containing U.S. Government securities. Our valuation techniques used to measure fair value for these securities during the period consisted primarily of third party pricing services that utilized actual market data such as trades of comparable bond issues, broker/dealer quotations for the same or similar investments in active markets and other observable inputs.

The following is a summary of our available-for-sale marketable securities:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
			(in thousands)
March 31, 2015
Municipal bonds	$	28,831	$	15	$	(6	)	$	28,840
December 31, 2014
Municipal bonds	$	28,626	$	16	$	(11	)	$	28,631

As of March 31, 2015, the contractual maturities of our marketable securities were as follows:

	Amortized Cost		Estimated Fair Value
	(in thousands)
Less than one year	$	15,324	$	15,332
One to five years	13,507		13,508
Total	$	28,831	$	28,840

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Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Number of states potentially subject to additional FUTA (BCR Add-On) tax	7
FUTA tax associated with BCR Add-On	$ 3.5

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Net Income per Share (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Summary of the net income allocated to common shares and the basic and diluted shares used in the net income per share computations

The following table summarizes the net income allocated to common shares and the basic and diluted shares used in the net income per share computations:

	Three Months Ended   March 31,
	2015			2014
	(in thousands)
Net income	$	13,787		$	9,564
Less distributed and undistributed earnings allocated to participating securities	(355		)	(282		)
Net income allocated to common shares	$	13,432		$	9,282
Weighted average common shares outstanding	24,716			24,823
Incremental shares from assumed conversions of common stock options	8			7
Adjusted weighted average common shares outstanding	24,724			24,830
Potentially dilutive securities not included in weighted average share calculation due to anti-dilutive effect	—			—