10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549 

__________________________________________

FORM 10-Q 

__________________________________________

(Mark One)

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

For the quarterly period ended June 30, 2020

or

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

For the transition period from              to             

Commission File No. 000-49604 

__________________________________________

ManTech International Corporation

(Exact Name of Registrant as Specified in its Charter) 

__________________________________________

Delaware			22-1852179
State or Other Jurisdiction of Incorporation or Organization			I.R.S. Employer Identification No.
2251 Corporate Park Drive	Herndon	VA	20171
Address of Principal Executive Offices			Zip Code

(703) 218-6000

Registrant’s Telephone Number, Including Area Code 

__________________________________________

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Class A Common Stock	MANT	Nasdaq

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

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

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

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

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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

As of July 29, 2020 there were 27,145,551 shares outstanding of our Class A common stock and 13,187,195 shares outstanding of our Class B common stock.

TABLE OF CONTENTS

		Page No.
PART I - FINANCIAL INFORMATION
Item 1.	Financial Statements (unaudited)
	Condensed Consolidated Balance Sheets as of June 30, 2020 and December 31, 2019	3
	Condensed Consolidated Statements of Income for the Three and Six Months Ended June 30, 2020 and 2019	4
	Condensed Consolidated Statements of Comprehensive Income for the Three and Six Months Ended June 30, 2020 and 2019	5
	Condensed Consolidated Statements of Changes in Stockholders' Equity for the Three and Six Months Ended June 30, 2020 and 2019	6
	Condensed Consolidated Statements of Cash Flows for the Six Months Ended June 30, 2020 and 2019	7
	Notes to Condensed Consolidated Financial Statements	8
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	18
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	24
Item 4.	Controls and Procedures	24
Part II - OTHER INFORMATION
Item 1.	Legal Proceedings	25
Item 6.	Exhibits	25

2

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements

MANTECH INTERNATIONAL CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS

(In Thousands Except Share and Per Share Amounts)

	(unaudited)
	June 30, 2020			December 31, 2019
ASSETS
Cash and cash equivalents	$	29,668		$	8,854
Receivables—net	443,018			398,976
Prepaid expenses	38,172			20,030
Taxes receivable—current	6,586			21,996
Other current assets	6,089			4,878
Total Current Assets	523,533			454,734
Goodwill	1,191,270			1,191,259
Other intangible assets—net	188,651			196,778
Property and equipment—net	111,381			85,631
Operating lease right of use assets	102,187			117,728
Employee supplemental savings plan assets	32,740			36,777
Investments	11,549			11,550
Other assets	13,458			13,457
TOTAL ASSETS	$	2,174,769		$	2,107,914
LIABILITIES AND STOCKHOLDERS' EQUITY
LIABILITIES
Accounts payable and accrued expenses	$	146,936		$	146,016
Accrued salaries and related expenses	114,911			97,298
Contract liabilities	47,766			27,620
Operating lease obligations—current	29,063			29,047
Total Current Liabilities	338,676			299,981
Deferred income taxes	134,352			131,782
Operating lease obligations—long term	89,149			103,148
Accrued retirement	31,525			35,552
Long term debt	20,000			36,500
Other long-term liabilities	27,978			10,309
TOTAL LIABILITIES	641,680			617,272
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Common stock, Class A—$0.01 par value; 150,000,000 shares authorized; 27,388,381 and 27,235,860 shares issued at June 30, 2020 and December 31, 2019; 27,144,268 and 26,991,747 shares outstanding at June 30, 2020 and December 31, 2019	274			272
Common stock, Class B—$0.01 par value; 50,000,000 shares authorized; 13,187,195 and 13,187,195 shares issued and outstanding at June 30, 2020 and December 31, 2019	132			132
Additional paid-in capital	535,464			525,851
Treasury stock, 244,113 and 244,113 shares at cost at June 30, 2020 and December 31, 2019	(9,158		)	(9,158		)
Retained earnings	1,006,624			973,767
Accumulated other comprehensive loss	(247		)	(222		)
TOTAL STOCKHOLDERS' EQUITY	1,533,089			1,490,642
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$	2,174,769		$	2,107,914

See notes to condensed consolidated financial statements.

3

MANTECH INTERNATIONAL CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

(In Thousands Except Per Share Amounts)

	(unaudited) Three months ended June 30,						(unaudited) Six months ended June 30,
	2020			2019			2020			2019
REVENUE	$	632,492		$	537,037		$	1,243,404		$	1,038,967
Cost of services	539,473			459,266			1,059,764			890,349
General and administrative expenses	53,433			44,474			105,156			86,789
OPERATING INCOME	39,586			33,297			78,484			61,829
Interest expense	(632		)	(945		)	(1,287		)	(1,429		)
Interest income	137			121			187			311
Other income (expense), net	—			31			(22		)	(11		)
INCOME FROM OPERATIONS BEFORE INCOME TAXES AND EQUITY METHOD INVESTMENTS	39,091			32,504			77,362			60,700
Provision for income taxes	(9,143		)	(8,290		)	(18,734		)	(15,356		)
Equity in (losses) of unconsolidated subsidiaries	—			—			(1		)	(12		)
NET INCOME	$	29,948		$	24,214		$	58,627		$	45,332
BASIC EARNINGS PER SHARE:
Class A common stock	$	0.74		$	0.61		$	1.46		$	1.14
Class B common stock	$	0.74		$	0.61		$	1.46		$	1.14
DILUTED EARNINGS PER SHARE:
Class A common stock	$	0.74		$	0.60		$	1.44		$	1.13
Class B common stock	$	0.74		$	0.60		$	1.44		$	1.13

See notes to condensed consolidated financial statements.

4

MANTECH INTERNATIONAL CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(In Thousands)

	(unaudited) Three months ended June 30,						(unaudited) Six months ended June 30,
	2020			2019			2020			2019
NET INCOME	$	29,948		$	24,214		$	58,627		$	45,332
OTHER COMPREHENSIVE INCOME (LOSS):
Translation adjustments, net of tax	(8		)	(7		)	(25		)	5
Cumulative-effect adjustment for adoption of Accounting Standards Update 2018-02	—			—			—			(24		)
Total other comprehensive (loss)	(8		)	(7		)	(25		)	(19		)
COMPREHENSIVE INCOME	$	29,940		$	24,207		$	58,602		$	45,313

See notes to condensed consolidated financial statements.

5

MANTECH INTERNATIONAL CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY

(In Thousands)

	(unaudited) Three months ended June 30,						(unaudited) Six months ended June 30,
	2020			2019			2020			2019
Common Stock, Class A
At beginning of period	$	273		$	269		$	272		$	268
Stock-based compensation expense	1			1			1			1
Stock option exercises	—			—			1			1
At end of period	274			270			274			270
Common Stock, Class B
At beginning of period	132			132			132			132
At end of period	132			132			132			132
Additional Paid-In Capital
At beginning of period	529,763			508,605			525,851			506,970
Stock-based compensation expense	2,874			1,938			5,509			3,249
Stock option exercises	2,827			3,297			4,881			4,978
Payment consideration to tax authority on employees' behalf	—			—			(777		)	(1,357		)
At end of period	535,464			513,840			535,464			513,840
Treasury Stock, at cost
At beginning of period	(9,158		)	(9,158		)	(9,158		)	(9,158		)
At end of period	(9,158		)	(9,158		)	(9,158		)	(9,158		)
Retained Earnings
At beginning of period	989,578			913,453			973,767			903,084
Net income	29,948			24,214			58,627			45,332
Dividends	(12,902		)	(10,788		)	(25,770		)	(21,537		)
At end of period	1,006,624			926,879			1,006,624			926,879
Accumulated Other Comprehensive Loss
At beginning of period	(239		)	(114		)	(222		)	(102		)
Translation adjustments, net of tax	(8		)	(7		)	(25		)	5
Cumulative-effect adjustment for adoption of Accounting Standards Update 2018-02	—			—			—			(24		)
At end of period	(247		)	(121		)	(247		)	(121		)
Total Stockholders' Equity	$	1,533,089		$	1,431,842		$	1,533,089		$	1,431,842

See notes to condensed consolidated financial statements.

6

MANTECH INTERNATIONAL CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In Thousands)

	(unaudited) Six months ended June 30,
	2020			2019
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$	58,627		$	45,332
Adjustments to reconcile net income to net cash flow from (used in) operating activities:
Depreciation and amortization	33,154			25,630
Noncash lease expense	13,357			13,503
Deferred income taxes	2,570			5,468
Stock-based compensation expense	5,510			3,250
Bad debt expense	2,156			—
Contract loss reserve	(372		)	(505		)
Equity in losses of unconsolidated subsidiaries	1			12
Change in assets and liabilities—net of effects from acquired businesses:
Receivables—net	(46,198		)	30,151
Prepaid expenses	(18,142		)	(13,704		)
Taxes receivable—current	15,410			(1,711		)
Other current assets	1,026			2,896
Employee supplemental savings plan asset	(100		)	(4,253		)
Accounts payable and accrued expenses	2,196			11,522
Accrued salaries and related expenses	17,613			1,353
Operating lease obligations	(14,286		)	(13,487		)
Contract liabilities	20,146			15,317
Accrued retirement	(4,027		)	1,977
Other long-term liabilities	17,687			280
Other	(1,651		)	412
Net cash flow from operating activities	104,677			123,443
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Purchases of property and equipment	(45,600		)	(21,946		)
Investment in capitalized software	(5,016		)	(1,952		)
Proceeds from corporate owned life insurance	4,137			—
Proceeds from sale of property and equipment	869			—
Acquisition of a business-net of cash acquired	—			(114,552		)
Deferred contract costs	—			(2,658		)
Proceeds from equity method investment	—			283
Net cash used in investing activities	(45,610		)	(140,825		)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Borrowing under revolving credit facility	261,500			333,000
Repayments under revolving credit facility	(278,000		)	(297,000		)
Dividends paid	(25,782		)	(21,548		)
Proceeds from exercise of stock options	4,882			4,979
Payment consideration to tax authority on employees' behalf	(777		)	(1,357		)
Principal paid on financing leases	(76		)	(62		)
Net cash from (used in) financing activities	(38,253		)	18,012
NET CHANGE IN CASH AND CASH EQUIVALENTS	20,814			630
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	8,854			5,294
CASH AND CASH EQUIVALENTS, END OF PERIOD	$	29,668		$	5,924
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for interest	$	1,256		$	1,248
Cash paid for income taxes, net of refunds	$	(1,493	)	$	10,323
Noncash investing and financing activities:
Operating lease obligations arising from obtaining right of use assets	$	303		$	12,142
Finance lease obligations arising from obtaining right of use assets	$	63		$	352
Noncash investing activities	$	2,528		$	376

See notes to condensed consolidated financial statements.

7

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

June 30, 2020

UNAUDITED

1. Description of the Business

ManTech International Corporation (depending on the circumstances, “ManTech” “Company” “we” “our” “ours” or “us”) provides mission-focused technology solutions and services for U.S. defense, intelligence community and federal civilian agencies. We excel in full-spectrum cyber, data collection & analytics, enterprise information technology (IT) and systems engineering and software application development solutions that support national and homeland security.

2. Basis of Presentation

The accompanying condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). Certain information and note disclosures normally included in the annual financial statements, prepared in accordance with accounting principles generally accepted in the U.S., have been condensed or omitted pursuant to those rules and regulations. The preparation of these condensed consolidated financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue and expenses. We recommend that you read these condensed consolidated financial statements in conjunction with the audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2019, previously filed with the SEC. We believe that the condensed consolidated financial statements in this Form 10-Q reflect all adjustments that are necessary to fairly present the financial position, results of operations and cash flows for the interim periods presented. The results of operations for such interim periods are not necessarily indicative of the results that can be expected for the full year.

3. Revenue from Contracts with Customers

We derive revenue from contracts with customers primarily from contracts with the U.S. government in the areas of defense, intelligence, homeland security and other federal civilian agencies. Substantially all of our revenue is derived from services and solutions provided to the U.S. government or to prime contractors supporting the U.S. government, including services by our employees and our subcontractors, and solutions that include third-party hardware and software that we purchase and integrate as a part of our overall solutions. Customer requirements may vary from period-to-period depending on specific contract and customer requirements. We provide our services and solutions under three types of contracts: cost-reimbursable, fixed-price and time-and-materials. Under cost-reimbursable contracts, we are reimbursed for costs that are determined to be reasonable, allowable and allocable to the contract and paid a fee representing the profit margin negotiated between us and the contracting agency, which may be fixed or performance based. Under fixed-price contracts, we perform specific tasks for a fixed price. Fixed-price contracts may include either a product delivery or specific service performance over a defined period. Under time-and-materials contracts, we are reimbursed for labor at fixed hourly rates and are generally reimbursed separately for allowable materials and expenses at cost.

For contracts that do not meet the criteria to measure performance as a right to invoice under the series guidance, we utilize an Estimate at Completion process to measure progress toward completion. We typically estimate progress towards completion based on cost incurred or direct labor incurred. As part of this process, we review information including, but not limited to, any outstanding key contract matters, progress towards completion and the related program schedule, identified risks and opportunities and the related changes in estimates of revenue and costs. The risks and opportunities include judgments about the ability and cost to achieve the contract milestones and other technical contract requirements. We make assumptions and estimates regarding labor productivity and availability, the complexity of the work to be performed, the availability of materials, the length of time to complete the performance obligation, execution by our subcontractors, the availability and timing of funding from our customer and overhead cost rates, among other variables. A significant change in one or more of these estimates could affect the timing in which we recognize revenue on our contracts. For the three months ended June 30, 2020 and 2019, the aggregate impact of adjustments in contract estimates increased our revenue by $5.8 million and $3.5 million, respectively. For the six months ended June 30, 2020 and 2019, the aggregate impact of adjustments in contract estimates increased our revenue by $7.2 million and $5.6 million, respectively.

We have one reportable segment. Our U.S. government customers typically exercise independent decision-making and contracting authority. Offices or divisions within an agency or department of the U.S. government may directly, or through a prime contractor, use our services as a separate customer as long as the customer has independent decision-making and contracting authority within its organization. We treat sales to U.S. government customers as sales within the U.S. regardless of where the services are performed. We generated 99% of our revenue from sales in the U.S. for both the three months ended June 30, 2020 and 2019. We generated 99% of our revenue from sales in the U.S. for both the six months ended June 30, 2020 and 2019.

8

The following tables disclose revenue (in thousands) by contract type, customer and contractor type for the periods presented.

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
Cost-reimbursable	$	432,876	$	371,852	$	851,531	$	731,617
Fixed-price	120,359		108,028		241,914		203,091
Time-and-materials	79,257		57,157		149,959		104,259
Revenue	$	632,492	$	537,037	$	1,243,404	$	1,038,967

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
U.S. Government	$	622,627	$	524,976	$	1,223,155	$	1,015,993
State agencies, international agencies and commercial entities	9,865		12,061		20,249		22,974
Revenue	$	632,492	$	537,037	$	1,243,404	$	1,038,967

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
Prime contractor	$	577,377	$	477,986	$	1,132,545	$	924,505
Subcontractor	55,115		59,051		110,859		114,462
Revenue	$	632,492	$	537,037	$	1,243,404	$	1,038,967

The components of our receivables are as follows (in thousands):

	June 30, 2020			December 31, 2019
Billed receivables	$	357,092		$	311,061
Unbilled receivables	100,290			99,493
Allowance for doubtful accounts	(14,364		)	(11,578		)
Receivables—net	$	443,018		$	398,976

Receivables at June 30, 2020 are expected to be substantially collected within one year except for approximately $2.6 million, a majority is related to U.S. government receivables. We do not believe that we have significant exposure to credit risk as billed receivables and unbilled receivables are primarily due from the U.S. government. The allowance for doubtful accounts represents our estimate for exposure due to compliance, contractual issues and bad debts related to prime contractors.

The following table discloses contract liabilities (in thousands):

	June 30, 2020		December 31, 2019
Contract liabilities	$	47,766	$	27,620

Changes in the balance of contract liabilities are primarily due to the timing difference between our performance and our customers' payments. For the three months ended June 30, 2020, the amount of revenue that was included in the opening contract liabilities balance were $1.8 million. For the six months ended June 30, 2020, the amount of revenue that was included in the opening contract liabilities balance was $18.5 million.

9

The remaining performance obligation as of June 30, 2020 is $2.2 billion. The following table discloses when we expect to recognize the remaining performance obligation as revenue (in billions):

For the remaining six months ending December 31, 2020		For the year ending
		December 31, 2021		December 31, 2022		Thereafter
$	1.0	$	0.7	$	0.2	$	0.3

4. Acquisitions

H2M Group (H2M)—On August 8, 2019, we completed the acquisition of H2M through a membership interest purchase agreement by and among H2M Group, HHM Holding LLC, and the Members and ManTech International Corporation. H2M is a provider of intelligence and analysis services and solutions primarily to the National Geospatial-Intelligence Agency (NGA). This acquisition strengthens our ability to help key government agencies implement new automation techniques that enable intelligence analysts to more efficiently navigate large amounts of data and distill critical information to inform actionable intelligence and make mission-critical decisions.

The acquisition was accounted for as a business combination. The results of H2M's operations have been included in our condensed consolidated financial statements since that date. We funded the acquisition with cash on hand and borrowings on our revolving credit facility.

The purchase price of $38.5 million, which includes the finalized working capital adjustment, was allocated to the underlying assets and liabilities based on their estimated fair value at the date of acquisition. The excess of the purchase price over the fair value of assets acquired and liabilities assumed was recorded as goodwill. The purchase price allocation for H2M is complete as of June 30, 2020.

Determining the fair value of assets acquired and liabilities assumed requires significant judgment, which includes, among other factors, analysis of historical performance and estimates of future performance of H2M's contracts. In some cases, we have used discounted cash flow analyses, which were based on our best estimate of future revenue, earnings and cash flows as well as our discount rate adjusted for risk.

Recognition of goodwill is largely attributed to the value paid for H2M's capabilities to support government agencies in the implementation of high-quality geospatial and professional services. The goodwill recorded for this transaction will be deductible for tax purposes over 15 years. The components of other intangible assets associated with the acquisition were customer relationships and backlog valued at $9.6 million and $2.3 million, respectively. The fair values of the customer relationships and backlog were determined using the excess earnings method (income approach) in which the value is derived from an estimation of the after-tax cash flows specifically attributable to backlog and customer relationships. Assumptions used in the analysis included revenue and expense forecasts, contributory asset charges, tax amortization benefit and discount rates. Customer contracts and related relationships represent the underlying relationships and agreements with H2M's existing customers. Customer relationships are amortized using the pattern of benefits method over their estimated useful lives of approximately 20 years. Backlog is amortized using the pattern of benefits method over its estimated useful life of 2 years. The weighted-average amortization period for other intangible assets is 17 years.

10

The following table represents the purchase price allocation for H2M (in thousands):

Cash and cash equivalents	$	29
Receivables	4,187
Prepaid expenses	188
Other current assets	5
Goodwill	25,089
Other intangible assets	11,900
Operating lease right of use assets	152
Property and equipment	56
Other assets	7
Accounts payable and accrued expenses	(1,956		)
Accrued salaries and related expenses	(1,023		)
Operating lease obligations—long term	(152		)
Net assets acquired and liabilities assumed	$	38,482

Kforce Government Solutions (KGS)—On April 1, 2019, we completed the acquisition of KGS. KGS was a wholly owned subsidiary of the publicly traded commercial technology and staffing company KForce, Inc. The acquisition was completed through an equity purchase agreement dated February 28, 2019, by and among Kforce Government Solutions, Inc and other beneficiaries and ManTech International Corporation. KGS provides services, IT solutions, transformation and management consulting and data analytics - most notably in the healthcare IT market. This acquisition expands our presence with important customers such as the Department of Veteran Affairs (VA).

The acquisition was accounted for as a business combination. The results of KGS's operations have been included in our consolidated financial statements since that date. We funded the acquisition with cash on hand and borrowings on our revolving credit facility.

The purchase price of $114.6 million, which includes the finalized working capital adjustment, was allocated to the underlying assets and liabilities based on their estimated fair value at the date of acquisition. The excess of the purchase price over the fair value of assets acquired and liabilities assumed was recorded as goodwill. The purchase price allocation of KGS is complete as of June 30, 2020.

Determining the fair value of assets acquired and liabilities assumed requires significant judgment, which includes, among other factors, analysis of historical performance and estimates of future performance of KGS’s contracts. In some cases, we have used discounted cash flow analyses, which were based on our best estimate of future revenue, earnings and cash flows as well as our discount rate adjusted for risk.

Recognition of goodwill is largely attributed to the value paid for KGS's capabilities to support customers in IT solutions, transformation and management consulting and data analytics. A majority of the goodwill recorded will not be deductible for tax purposes.

The components of other intangible assets associated with the acquisition were customer relationships and backlog valued at $33.1 million and $1.6 million, respectively. The fair values of the customer relationships and backlog were determined using the excess earnings method (income approach) in which the value is derived from an estimation of the after-tax cash flows specifically attributable to backlog and customer relationships. Assumptions used in the analysis included revenue and expense forecasts, contributory asset charges, tax amortization benefit and discount rates. Customer contracts and related relationships represent the underlying relationships and agreements with KGS's existing customers. Customer relationships are amortized using the pattern of benefits method over their estimated useful lives of approximately 20 years. Backlog is amortized straight-line over its estimated useful life of 1 year. The weighted-average amortization period for other intangible assets is 19 years.

11

The following table represents the finalized purchase price allocation for KGS (in thousands):

Cash and cash equivalents	$	154
Receivables	17,071
Prepaid expenses	368
Other current assets	168
Goodwill	80,374
Other intangible assets	34,839
Property and equipment	361
Accounts payable and accrued expenses	(6,895		)
Accrued salaries and related expenses	(4,421		)
Deferred income taxes	(7,087		)
Other long-term liabilities	(379		)
Net assets acquired and liabilities assumed	$	114,553

5. Earnings Per Share

Under ASC 260, Earnings per Share, the two-class method is an earnings allocation formula that determines earnings per share for each class of common stock according to dividends declared (or accumulated) and participation rights in undistributed earnings. Under that method, basic and diluted earnings per share data are presented for each class of common stock.

In applying the two-class method, we determined that undistributed earnings should be allocated equally on a per share basis between Class A and Class B common stock. Under our Certificate of Incorporation, the holders of the common stock are entitled to participate ratably, on a share-for-share basis as if all shares of common stock were of a single class, in such dividends as may be declared by the Board of Directors. During the six months ended June 30, 2020 and 2019, we declared and paid a quarterly dividend in the amount of $0.32 per share and $0.27 per share, respectively, on both classes of common stock.

Basic earnings per share has been computed by dividing net income available to common stockholders by the weighted average number of shares of common stock outstanding during each period. Shares issued during the period and shares reacquired during the period are weighted for the portion of the period in which the shares were outstanding. Diluted earnings per share have been computed in a manner consistent with that of basic earnings per share while giving effect to all potentially dilutive common shares that were outstanding during each period.

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The net income available to common stockholders and weighted average number of common shares outstanding used to compute basic and diluted earnings per share for each class of common stock are as follows (in thousands, except per share amounts): 

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
Distributed earnings	$	12,902	$	10,788	$	25,770	$	21,537
Undistributed earnings	17,046		13,426		32,857		23,795
Net income	$	29,948	$	24,214	$	58,627	$	45,332
Class A common stock:
Basic net income available to common stockholders	$	20,141	$	16,210	$	39,407	$	30,324
Basic weighted average common shares outstanding	27,082		26,707		27,037		26,646
Basic earnings per share	$	0.74	$	0.61	$	1.46	$	1.14
Diluted net income available to common stockholders	$	20,220	$	16,255	$	39,576	$	30,411
Effect of potential exercise of stock options	327		229		358		232
Diluted weighted average common shares outstanding	27,409		26,936		27,395		26,878
Diluted earnings per share	$	0.74	$	0.60	$	1.44	$	1.13
Class B common stock:
Basic net income available to common stockholders	$	9,807	$	8,004	$	19,220	$	15,008
Basic weighted average common shares outstanding	13,187		13,188		13,187		13,188
Basic earnings per share	$	0.74	$	0.61	$	1.46	$	1.14
Diluted net income available to common stockholders	$	9,728	$	7,959	$	19,051	$	14,921
Diluted weighted average common shares outstanding	13,187		13,188		13,187		13,188
Diluted earnings per share	$	0.74	$	0.60	$	1.44	$	1.13

For the three months ended June 30, 2020 and 2019, options to purchase 228,816 shares and 479,685 shares, respectively, were outstanding but not included in the computation of diluted earnings per share because the options' effect would have been anti-dilutive. For the six months ended June 30, 2020 and 2019, options to purchase 231,938 shares and 496,859 shares, respectively, were outstanding but not included in the computation of diluted earnings per share because the options' effect would have been anti-dilutive. For the six months ended June 30, 2020 and 2019, there were 103,660 shares and 144,585 shares, respectively, issued from the exercise of stock options. For the six months ended June 30, 2020 and 2019 there were 48,861 shares and 72,493 shares, respectively, issued from the vesting of restricted stock units.

6. Property and Equipment

Major classes of property and equipment are summarized as follows (in thousands):

	June 30, 2020			December 31, 2019
Furniture and equipment	$	184,038		$	150,640
Leasehold improvements	50,817			49,625
Finance leases	704			641
Property and equipment—gross	235,559			200,906
Accumulated depreciation and amortization	(124,178		)	(115,275		)
Property and equipment—net	$	111,381		$	85,631

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Depreciation and amortization expense related to property and equipment for the three months ended June 30, 2020 and 2019 was $9.7 million and $6.2 million, respectively. Depreciation and amortization related to property and equipment for the six months ended June 30, 2020 and 2019 was $18.5 million and $12.5 million, respectively.

7. Goodwill and Other Intangible Assets

The change in the carrying amount of goodwill during the year ended December 31, 2019 and six months ended June 30, 2020 are as follows (in thousands):

	Goodwill Balance
Goodwill at December 31, 2018	$	1,085,806
Acquisitions	105,453
Goodwill at December 31, 2019	1,191,259
Acquisition fair value adjustment	11
Goodwill at June 30, 2020	$	1,191,270

Other intangible assets consisted of the following (in thousands):

	June 30, 2020						December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Other intangible assets:
Contract and program intangible assets	$	402,532	$	231,971	$	170,561	$	402,532	$	221,437	$	181,095
Capitalized software	56,075		37,985		18,090		52,411		36,728		15,683
Total other intangible assets—net	$	458,607	$	269,956	$	188,651	$	454,943	$	258,165	$	196,778

Amortization expense relating to intangible assets for the three months ended June 30, 2020 and 2019 was $6.5 million and $6.1 million, respectively. Amortization expense relating to intangible assets for the six months ended June 30, 2020 and 2019 was $13.0 million and $11.9 million, respectively. We estimate that we will have the following amortization expense for the future periods indicated below (in thousands):

For the remaining six months ending December 31, 2020	$	12,865
For the year ending:
December 31, 2021	$	23,932
December 31, 2022	$	21,306
December 31, 2023	$	18,021
December 31, 2024	$	16,276
December 31, 2025	$	13,789

8. Debt

Revolving Credit Facility—We maintain a credit facility with a syndicate of lenders led by Bank of America, N.A., as sole administrative agent. The credit agreement provides for a $500 million revolving credit facility, with a $75 million letter of credit sublimit and a $30 million swing line loan sublimit. The credit agreement also includes an accordion feature that permits us to arrange with the lenders for the provision of additional commitments. The maturity date is August 17, 2022.

Borrowings under our credit agreement are collateralized by substantially all of our assets and those of our Material Subsidiaries (as defined in the credit agreement) and bear interest at one of the following variable rates as selected by us at the time of borrowing: a London Interbank Offer Rate base rate plus market-rate spreads (1.25% to 2.25% based on our consolidated total leverage ratio) or Bank of America's base rate plus market spreads (0.25% to 1.25% based on our consolidated total leverage ratio).

The terms of the credit agreement permit prepayment and termination of the loan commitments at any time, subject to certain

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conditions. The credit agreement requires us to comply with specified financial covenants, including the maintenance of certain leverage ratios and a consolidated coverage ratio. The credit agreement also contains various covenants, including affirmative covenants with respect to certain reporting requirements and maintaining certain business activities, and negative covenants that, among other things, may limit or impose restrictions on our ability to incur liens, incur additional indebtedness, make investments, make acquisitions and undertake certain other actions. As of and during the six months ended June 30, 2020 and 2019, we were in compliance with the financial covenants under the credit agreement.

There was $20.0 million and $36.5 million outstanding on our revolving credit facility at June 30, 2020 and December 31, 2019, respectively. The maximum available borrowing under the revolving credit facility at June 30, 2020 was $473.7 million. As of June 30, 2020, we were contingently liable under letters of credit totaling $6.3 million, which reduces our availability to borrow under our revolving credit facility.

9. Commitments and Contingencies

Contracts with the U.S. government, including subcontracts, are subject to extensive legal and regulatory requirements and, from time-to-time, agencies of the U.S. government, in the ordinary course of business, investigate whether our operations are conducted in accordance with these requirements and the terms of the relevant contracts. U.S. government investigations of us, whether related to our U.S. government contracts or conducted for other reasons, could result in administrative, civil or criminal liabilities, including repayments, fines or penalties being imposed upon us, or could lead to suspension or debarment from future U.S. government contracting activities. Management believes it has adequately reserved for any losses that may be experienced from any investigation of which it is aware. The Defense Contract Audit Agency has substantially completed our incurred cost audits through 2016 with no material adjustments. The remaining audits for 2017 through 2019 are not expected to have a material effect on our financial position, results of operations or cash flow and management believes it has adequately reserved for any losses.

In the normal course of business, we are involved in certain governmental and legal proceedings, claims and disputes and have litigation pending under several suits. We believe that the ultimate resolution of these matters will not have a material effect on our financial position, results of operations or cash flows.

We have $6.3 million outstanding on our letter of credit, of which $5.7 million is related to an outstanding performance bond in connection with a contract between ManTech MENA, LLC and Jadwalean International Operations and Management Company to fulfill technical support requirements for the Royal Saudi Air Force.

10. Stock-Based Compensation

Our 2016 Management Incentive Plan (the Plan) was designed to attract, retain and motivate key employees. The types of awards available under the Plan include, among others, stock options, restricted stock and restricted stock units (RSUs), among others. Equity awards granted under the Plan are settled in shares of Class A common stock. At the beginning of each year, the Plan provides that the number of shares available for issuance automatically increases by an amount equal to 1.5% of the total number of shares of Class A and Class B common stock outstanding on December 31^st of the previous year. On January 2, 2020, there were 602,684 additional shares made available for issuance under the Plan. Through June 30, 2020, the Board of Directors has authorized the issuance of up to 15,751,005 shares under this Plan. Through June 30, 2020, the remaining aggregate number of shares of our common stock available for future grants under the Plan was 7,068,410. The Plan expires in March 2026.

The Plan is administered by the compensation committee of our Board of Directors, along with its delegates. Subject to the express provisions of the Plan, the committee has the Board of Directors’ authority to administer and interpret the Plan, including the discretion to determine the exercise price, vesting schedule, contractual life and the number of shares to be issued.

Stock Compensation Expense—For the three months ended June 30, 2020 and 2019, we recorded $2.9 million and $1.9 million of stock-based compensation expense. For the six months ended June 30, 2020 and 2019, we recorded $5.5 million and $3.2 million of stock-based compensation expense. No compensation expense of employees with stock awards, including stock-based compensation expense, was capitalized during the periods. For the three months ended June 30, 2020 and 2019, we recorded $0.3 million and $0.5 million, respectively, to income tax benefit related to the exercise of stock options, vested cancellations and the vesting of restricted stock and restricted stock units. For the six months ended June 30, 2020 and 2019, we recorded $0.8 million and $0.7 million, respectively, to income tax benefit related to the exercise of stock options, vested cancellations and the vesting of restricted stock and restricted stock units.

Stock Options—Under the Plan, we have issued stock options. A stock option gives the holder the right, but not the obligation to purchase a certain number of shares at a predetermined price for a specific period.

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Fair Value Determination—We have used the Black-Scholes-Merton option pricing model to determine the fair value of our awards on the date of grant. We will reconsider the use of the Black-Scholes-Merton model if additional information becomes available in the future that indicates another model would be more appropriate or if grants issued in future periods have characteristics that cannot be reasonably estimated under this model.

There were no option grants during the six months ended June 30, 2020. The following weighted-average assumptions were used for option grants during the six months ended June 30, 2019:

• Volatility—The expected volatility of the options granted was estimated based upon historical volatility of our share price through weekly observations of our trading history.

• Expected life of options—The expected life of options granted to employees was determined from historical exercises of the grantee population. The options had graded vesting over three years in equal installments beginning on the first anniversary of the date of grant and a contractual term of five years.

• Risk-free interest rate—The yield on zero-coupon U.S. Treasury strips was used to extrapolate a forward-yield curve. This “term structure” of future interest rates was then input into a numeric model to provide the equivalent risk-free rate to be used in the Black-Scholes-Merton model based on the expected term of the underlying grants.

• Dividend Yield—The Black-Scholes-Merton valuation model requires an expected dividend yield as an input. For the six months ended June 30, 2019, we have calculated our expected dividend yield based on an expected annual cash dividend of $1.08 per share.

The following table summarizes weighted-average assumptions used in our calculations of fair value for the six months ended June 30, 2019:

	Six months ended June 30, 2019
Volatility	27.00	%
Expected life of options	3 years
Risk-free interest rate	2.39	%
Dividend yield	2.00	%

Stock Option Activity—No options were granted during the six months ended June 30, 2020. The weighted-average fair value of options granted during the six months ended June 30, 2019, as determined under the Black-Scholes-Merton valuation model, was $10.07. Option grants that vested during the six months ended June 30, 2020 and 2019 had a combined fair value of $1.7 million and $1.2 million, respectively.

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The following table summarizes stock option activity for the year ended December 31, 2019 and the six months ended June 30, 2020:

	Number of Shares		Weighted Average Exercise Price		Aggregate Intrinsic Value (in thousands)		Weighted Average Remaining Contractual Life
Stock options outstanding at December 31, 2018	1,093,400		$	45.34	$	8,776
Granted	489,947		$	63.87
Exercised	(338,748	)	$	37.94	$	9,641
Cancelled and expired	(108,504	)	$	51.21
Stock options outstanding at December 31, 2019	1,136,095		$	54.98	$	28,291
Exercised	(103,660	)	$	47.10	$	3,227
Cancelled and expired	(98,446	)	$	60.89
Stock options outstanding at June 30, 2020	933,989		$	55.23	$	13,662	3 years
Stock options exercisable at June 30, 2020	382,652		$	46.37	$	8,467	2 years

The following table summarizes non-vested stock options for the six months ended June 30, 2020:

	Number of Shares		Weighted Average Fair Value
Non-vested stock options at December 31, 2019	845,555		$	10.88
Vested	(197,689	)	$	8.76
Cancelled	(96,529	)	$	11.56
Non-vested stock options at June 30, 2020	551,337		$	11.52

Unrecognized compensation expense related to non-vested awards was $4.7 million as of June 30, 2020, which is expected to be recognized over a weighted-average period of 2 years.

Restricted Stock—Under the Plan, we have issued restricted stock. A restricted stock award is an issuance of shares that cannot be sold or transferred by the recipient until the vesting period lapses. Restricted stock issued to members of our Board of Directors vest on the one year anniversary of the grant date. The related compensation expense is recognized over the service period and is based on the grant date fair value of the stock. The grant date fair value of the restricted stock is equal to the closing market price of our common stock on the date of grant.

Restricted Stock Activity—The following table summarizes the restricted stock activity during the year ended December 31, 2019 and the six months ended June 30, 2020.

	Number of Shares		Weighted Average Fair Value
Non-vested restricted stock at December 31, 2018	20,000		$	52.83
Granted	24,000		$	62.66
Vested	(20,000	)	$	52.83
Non-vested restricted stock at December 31, 2019	24,000		$	62.66
Granted	24,000		$	71.11
Vested	(24,000	)	$	62.66
Non-vested restricted stock at June 30, 2020	24,000		$	71.11

RSUs—Under the Plan, we have issued restricted stock units (RSUs). RSUs are not actual shares, but rather a right to receive shares in the future. The shares are not issued and the employee cannot sell or transfer shares prior to vesting and have no voting rights until the RSUs vest. Employees who are granted RSUs do not receive dividend payments during the vesting period. Our employees' performance-based RSUs will result in the delivery of shares if (a) performance criteria is met and (b) the employee

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remains employed, in good standing, through the date of the performance period. Our employees' time-based RSUs will result in the delivery of shares in one-third increments on the first, second and third anniversaries of the date of grant. The grant date fair value of the RSUs is equal to the closing market price of our common stock on the grant date less the present value of dividends expected to be awarded during the service period. We recognize the grant date fair value of RSUs of shares we expect to issue as compensation expense ratably over the requisite service period.

RSU Activity—For performance-based RSUs that vested in the six months ended June 30, 2020, each RSU awarded resulted in the issuance of one share, which were issued net of applicable payroll tax withholdings. For the year ended December 31, 2019, each RSU awarded resulted in the issuance of 1.5 shares, which were issued net of applicable payroll tax withholdings. The following table summarizes the non-vested RSU activity during the year ended December 31, 2019 and the six months ended June 30, 2020:

	Number of Units		Weighted Average Fair Value
Non-vested RSUs at December 31, 2018	137,596		$	45.11
Granted	145,440		$	59.43
Vested	(60,915	)	$	42.75
Forfeited	(11,294	)	$	51.88
Non-vested RSUs at December 31, 2019	210,827		$	55.31
Granted	187,450		$	68.29
Vested	(35,882	)	$	51.80
Forfeited	(43,970	)	$	63.59
Non-vested RSUs at June 30, 2020	318,425		$	62.21

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Cautionary Note Regarding Forward-Looking Statements

All statements and assumptions contained in this Quarterly Report on Form 10-Q that do not relate to historical facts constitute "forward-looking statements." These statements can be identified by the fact that they do not relate strictly to historical or current facts. Forward-looking statements often include the use of words such as "may," "will," "expect," "intend," "anticipate," "believe," "estimate," "plan" and words and terms of similar substance in connection with discussions of future events, situations or financial performance. While these statements represent our current expectations, no assurance can be given that the results or events described in such statements will be achieved.

Forward-looking statements may include, among other things, statements with respect to our financial condition, results of operations, prospects, business strategies, competitive position, growth opportunities, and plans and objectives of management. Such statements are subject to numerous assumptions, risks, uncertainties and other factors, many of which are outside of our control, and include, without limitations, the risks and uncertainties discussed in the Item 1A "Risk Factors" in Part I of our Annual Report on Form 10-K for the fiscal year ended December 31, 2019.

Factors or risks that could cause our actual results to differ materially from the results we anticipate include, but are not limited to, the following:

• failure to maintain our relationship with the U.S. government, or the failure to compete effectively for new contract awards or to retain existing U.S. government contracts;

• disruptions to our business resulting from the recent outbreak of the novel coronavirus disease 2019 (known as COVID-19) or other similar global health epidemics, pandemics and/or other disease outbreaks;

• adverse changes in U.S. government spending for programs we support, whether due to changing mission priorities, economic and political policy change or federal budget constraints generally;

• inability to recruit and retain a sufficient number of employees with specialized skill sets or necessary security clearances who are in great demand and limited supply;

• failure to compete effectively for awards procured through the competitive bidding process, and the adverse impact of delays resulting from our competitors' protests of new contracts that are awarded to us;

• disruptions to our business or damage to our reputation resulting from cyber attacks and other security threats;

• failure to obtain option awards, task orders or funding under our contracts;

• the government renegotiating, modifying or terminating our contracts;

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• failure to comply with, or adverse changes in, complex U.S. government laws and procurement regulations;

• adverse results of U.S. government audits or other investigations of our government contracts;

• failure to successfully integrate acquired companies or businesses into our operations or to realize any accretive or synergistic effects from such acquisitions;

• failure to mitigate risks associated with conducting business internationally; and

• adverse changes in business conditions that may cause our investments in recorded goodwill to become impaired.

We urge you not to place undue reliance on these forward-looking statements, which speak only as of the date of this Quarterly Report. We undertake no obligation to update any forward-looking statement made herein following the date of this Quarterly Report, whether as a result of new information, subsequent events or circumstances, changes in expectations or otherwise.

Overview

We provide mission-focused technology solutions and services for U.S. defense, intelligence community and federal civilian agencies. We excel in full-spectrum cyber, data collection & analytics, enterprise information technology (IT), systems and software engineering solutions that support national and homeland security.

Approximately 98% of our revenues are generated through contracts with the U.S. federal government, or through prime contractors supporting the U.S. government. The U.S. government is the largest consumer of services and solutions in the U.S. As such, our business is impacted by the overall U.S. government budget and our ability to match our capabilities and offerings to the U.S. government's spending priorities. In December 2019, Congress passed, and the President signed into law, two appropriation bills funding the government through GFY 2020. We believe the current appropriations and the Administration's stated priorities for national and homeland security aligns favorably with our capabilities and offerings.

COVID-19 and Budgetary Outlook

We cannot predict the future impact of the COVID-19 pandemic and the resulting impact on the economy; however, it could have a material adverse effect on our business, financial position, results of operations, and/or cash flows. The global outbreak of the COVID-19 pandemic, along with various measures that local, state and federal governments have adopted to mitigate its impact, have required us to make changes to our operations to enable our employees to continue supporting our customers' mission-critical needs in this period of disruption. As a result of travel restrictions, social distancing guidelines and other efforts that have been adopted by public health officials to mitigate the impact of the COVID-19 pandemic, we have made changes to our operating schedules and staffing plans to accommodate these restrictions while maintaining the ability of our employees to continue to support and work with our customers to the maximum extent possible. The changes include the implementation of telework or other means of remote work for our employees, who support both mission-critical programs and our internal support organization. With respect to our impacted programs that, by their nature, cannot be supported remotely, we have accommodated those customers who have implemented shiftwork or other mitigation protocols by maintaining our workforce in a “mission ready” state.

On March 27, 2020, the Coronavirus Aid, Relief and Economic Security (CARES) Act was enacted. The CARES Act includes a provision under which government contractors can seek reimbursement for amounts lost due to the impacts of closed facilities, reduced work schedules or mandated quarantines to support social distancing. The precise application of this provision, including what type of costs will be reimbursed, the earliest date cost-reimbursement will be applicable, and whether fee recovery will be included in the reimbursement, are determinations being made at the individual government agency or contract level. We currently expect our customers will reimburse costs incurred without fee. The relevant provision of the CARES Act is in effect until September 30, 2020. Should the CARES Act not be extended, or similar legislation enacted, while social distancing, travel restrictions, or other pandemic risk reduction measures remain in effect, it could have a material adverse effect on our business, financial position, results of operations, and/or cash flows. We continue to monitor and evaluate this and other provisions of the CARES Act, as well as any other legislative or regulatory initiatives that seek to reduce the impact of the pandemic. Additionally, there is a strong likelihood that the federal government will enter GFY 2021 under a Continuing Resolution as debates and negotiations on appropriations and funding priorities continue in Congress. It is possible that a Continuing Resolution could potentially delay new contract awards.

To date, the majority of our programs have not been adversely impacted (or we have developed alternative means, including teleworking arrangements, to support program requirements). With respect to our programs that have been adversely impacted, we have begun seeking reimbursements under the CARES Act. Due to the mission-critical nature of a majority of our business and the relief provided to us under the CARES Act, the overall impact of the COVID-19 pandemic on our results of operations and liquidity were immaterial. In addition to the measures described above, we have developed contingency plans (which we continuously reevaluate) to address additional disruptions to our operations or to the operations of our customers. See “Item IA. Risk Factors” in Part II of this Quarterly Report for additional discussion of the risks associated with COVID-19.

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We recommend that you read this discussion and analysis in conjunction with our Annual Report on Form 10-K for the fiscal year ended December 31, 2019, previously filed with the Securities and Exchange Commission.

Three Months Ended June 30, 2020 Compared to the Three Months Ended June 30, 2019

The following table sets forth certain items from our condensed consolidated statements of income and the relative percentage that certain items of expenses and earnings bear to revenue, as well as the period-to-period change from June 30, 2019 to June 30, 2020.

	Three months ended June 30,										Period-to-Period Change
	2020			2019			2020		2019		2019 to 2020
	Dollars						Percentage				Dollars			Percentage
	(dollars in thousands)
REVENUE	$	632,492		$	537,037		100.0	%	100.0	%	$	95,455		17.8	%
Cost of services	539,473			459,266			85.3	%	85.5	%	80,207			17.5	%
General and administrative expenses	53,433			44,474			8.4	%	8.3	%	8,959			20.1	%
OPERATING INCOME	39,586			33,297			6.3	%	6.2	%	6,289			18.9	%
Interest expense	(632		)	(945		)	0.1	%	0.2	%	(313		)	(33.1	)%
Interest income	137			121			—	%	—	%	16			13.2	%
Other income, net	—			31			—	%	—	%	(31		)	(100.0	)%
INCOME FROM OPERATIONS BEFORE INCOME TAXES AND EQUITY METHOD INVESTMENTS	39,091			32,504			6.2	%	6.0	%	6,587			20.3	%
Provision for income taxes	(9,143		)	(8,290		)	1.5	%	1.5	%	853			10.3	%
NET INCOME	$	29,948		$	24,214		4.7	%	4.5	%	$	5,734		23.7	%

Revenue

The primary driver of our increase in revenues relates to revenue from new contract awards, growth on certain existing contracts and our recent acquisitions, which were offset by contracts and tasks that ended and reduced scope of work on some contracts. Due to COVID travel and social distancing restrictions, we have experienced an increase in revenue related to higher direct labor due to a decline in our employee's utilization of paid time off.

Cost of services

The increase in cost of services was primarily due to increases in revenue. As a percentage of revenue, direct labor costs were 49% and 48% for the three months ended June 30, 2020 and 2019, respectively. As a percentage of revenues, other direct costs, which include subcontractors and third party equipment and materials used in the performance of our contracts, were 37% for the three months ended June 30, 2020, compared to 38% for the same period in 2019.

General and administrative expenses

The increase in general and administrative expenses was primarily due to increased expenditures to support the growth of our business, bid and proposal spending and bad debt expense, offset by lower travel and other indirect spending impacted by COVID-19 restrictions.

Interest expense

The decrease in interest expense was due to repayment of borrowing on our revolving credit facility.

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Provision for income taxes

Our effective tax rate is affected by recurring items, such as the relative amount of income we earn in various taxing jurisdictions and their tax rates. It is also affected by discrete items that may occur in any given year, but are not consistent from year-to-year. Our effective income tax rate was 23% and 26% for the three months ended June 30, 2020 and 2019, respectively. The three months ending June 30, 2020 included an increased level of research and development credits over the same period in 2019 and improved performance in our deferred compensation plan assets due to a rebound in the equity markets during the quarter.

Six Months Ended June 30, 2020 Compared to the Six Months Ended June 30, 2019

The following table sets forth certain items from our condensed consolidated statements of income and the relative percentage that certain items of expenses and earnings bear to revenue, as well as the period-to-period change from June 30, 2019 to June 30, 2020.

	Six months ended June 30,										Period-to-Period Change
	2020			2019			2020		2019		2019 to 2020
	Dollars						Percentage				Dollars			Percentage
	(dollars in thousands)
REVENUE	$	1,243,404		$	1,038,967		100.0	%	100.0	%	$	204,437		19.7	%
Cost of services	1,059,764			890,349			85.2	%	85.7	%	169,415			19.0	%
General and administrative expenses	105,156			86,789			8.5	%	8.4	%	18,367			21.2	%
OPERATING INCOME	78,484			61,829			6.3	%	5.9	%	16,655			26.9	%
Interest expense	(1,287		)	(1,429		)	0.1	%	0.1	%	(142		)	(9.9	)%
Interest income	187			311			—	%	—	%	(124		)	(39.9	)%
Other (expense), net	(22		)	(11		)	—	%	—	%	11			100.0	%
INCOME FROM OPERATIONS BEFORE INCOME TAXES AND EQUITY METHOD INVESTMENTS	77,362			60,700			6.2	%	5.8	%	16,662			27.4	%
Provision for income taxes	(18,734		)	(15,356		)	1.5	%	1.4	%	3,378			22.0	%
Equity in (losses) of unconsolidated subsidiaries	(1		)	(12		)	—	%	—	%	(11		)	(91.7	)%
NET INCOME	$	58,627		$	45,332		4.7	%	4.4	%	$	13,295		29.3	%

Revenue

The primary driver of our increase in revenues relates to revenue from new contract awards, growth on certain existing contracts and our recent acquisitions, which were offset by contracts and tasks that ended and reduced scope of work on some contracts. Due to the uncertainties around the potential impact of the COVID-19 pandemic on timing of new contract awards, the hiring environment, and customer actions, we believe our revenues during the remainder of 2020 could vary and modestly fluctuate from the first half of the year.

Cost of services

The increase in cost of services was primarily due to increases in revenue. As a percentage of revenue, direct labor costs were 49% and 48% for the six months ended June 30, 2020 and 2019, respectively. As a percentage of revenues, other direct costs, which include subcontractors and third party equipment and materials used in the performance of our contracts, were 37% for the six months ended June 30, 2020, compared to 38% for the same period in 2019. Due to the uncertainties of the impact of COVID-19 on our business, we believe our cost of services as a percentage of revenues may slightly increase depending primarily on levels of revenue changes.

General and administrative expenses

The increase in general and administrative expenses was primarily due to increased expenditures to support the growth of our business, bid and proposal spending and bad debt expense, offset by lower travel and other indirect spending impacted by COVID-19

21

restrictions. We expect general and administrative expense as a percentage of revenue to increase slightly for the remainder of 2020 compared to the first half of the year due to a return to normal indirect spending.

Interest expense

The decrease in interest expense was due to repayment of borrowings on our revolving credit facility. Given currently liquidity needs, we expect interest expense to decrease during the remainder of 2020 compared to the same period in 2019.

Provision for income taxes

Our effective tax rate is affected by recurring items, such as the relative amount of income we earn in various taxing jurisdictions and their tax rates. It is also affected by discrete items that may occur in any given year, but are not consistent from year-to-year. Our effective income tax rate was 24% and 25% for the six months ended June 30, 2020 and 2019, respectively. The six months ended June 30, 2020 included an increased level of research and development credits over the same period in 2019 which were partially offset by negative performance of our deferred compensation plan assets due to year to date declines in equity markets. We do not currently expect any material changes to our effective tax rate for the remainder of 2020.

Backlog

At June 30, 2020 and December 31, 2019, our backlog was $9.2 billion and $9.1 billion, respectively. Our funded backlog was $1.4 billion and $1.3 billion as of June 30, 2020 and December 31, 2019, respectively. Backlog represents estimates that we calculate on a consistent basis. For additional information on how we compute backlog, see the disclosure under the caption "Backlog," contained in "Item 1 Business" of our Annual Report on Form 10-K for the fiscal year ended December 31, 2019.

Liquidity and Capital Resources

Historically, our primary liquidity needs have been financing acquisitions, working capital, payments under our cash dividend program and capital expenditures. Our primary sources of liquidity are cash from operating activities and borrowings under our revolving credit facility.

On June 30, 2020, our cash and cash equivalents balance was $29.7 million. There were outstanding borrowings of $20.0 million under our revolving credit facility at June 30, 2020. As of June 30, 2020, we were contingently liable under letters of credit totaling $6.3 million, which reduces our availability to borrow under our revolving credit facility. The maximum available borrowings under our revolving credit facility at June 30, 2020 were $473.7 million.

Cash Flows From (Used In) Operating Activities

Our operating cash flow is primarily affected by our ability to invoice and collect from our customers in a timely manner, our management of vendor payments and the overall profitability of our contracts. We bill most of our customers monthly after services are rendered. Our accounts receivable days sales outstanding were 63 and 66 for the six months ended June 30, 2020 and 2019, respectively. For the six months ended June 30, 2020 and 2019, our net cash from operating activities was $104.7 million and $123.4 million, respectively. The decrease in net cash flows from operating activities during the six months ended June 30, 2020 when compared to the same period in 2019 was primarily due to an increase in accounts receivable (driven by our revenue growth and an increase in our days sales outstanding in the first half of the year), offset by the increases in accrued salaries and related expenses, other long-term liabilities (related to the deferral of employer payroll tax payments afforded to us under the CARES Act) and increased net income as well as a decrease in tax receivable-current.

Cash Flows From (Used In) Investing Activities

Our cash used in investing activities consists primarily of business combinations, purchases of property and equipment and investments in capital software. For the six months ended June 30, 2020 our net cash used in investing activities was $45.6 million, which was primarily due to the purchase of equipment to support managed IT service contracts, infrastructure investments and capitalized software, offset by proceeds from corporate owned life insurance and sales of property and equipment. We expect the level of capital expenditures for the remainder of 2020 to be similar or slightly decrease compared to the first half of the year. For the six months ended June 30, 2019 our net cash used in investing activities was $140.8 million, which was primarily due to the acquisition of KGS and the purchase of equipment to support a managed IT service contract, infrastructure investments and capitalized software for internal use.

22

Cash Flows From (Used in) Financing Activities

For the six months ended June 30, 2020, our net cash used in financing activities was $38.3 million, which was primarily due to net repayments of our revolving credit facility and dividend payments, offset by proceeds from the exercise of stock options. For the six months ended June 30, 2019, our net cash from financing activities was $18.0 million, which was primarily due to net borrowings under our credit facility.

Revolving Credit Facility

We maintain a credit agreement with a syndicate of lenders led by Bank of America, N.A., as sole administrative agent. The credit agreement provides for a $500 million revolving credit facility, with a $75 million letter of credit sublimit and a $30 million swing line loan sublimit. The credit agreement also includes an accordion feature that permits us to arrange with the lenders for the provision of additional commitments. The maturity date is August 17, 2022.

Borrowings under our credit agreement are collateralized by substantially all of our assets and our Material Subsidiaries (as defined in the credit agreement) and bear interest at one of the following variable rates as selected by us at the time of borrowing: a London Interbank Offer Rate base rate plus market spreads (1.25% to 2.25% based on our consolidated total leverage ratio) or Bank of America's base rate plus market spreads (0.25% to 1.25% based on our consolidated total leverage ratio).

There were $20.0 million outstanding on our revolving credit facility at June 30, 2020. As of and during the six months ended June 30, 2020, we were in compliance with the financial covenants under the credit agreement.

Capital Resources

We believe the capital resources available to us from cash on hand, our remaining capacity under our revolving credit facility, and cash from our operations are adequate to fund our anticipated cash requirements for at least the next year. We anticipate financing our internal and external growth through cash from operating activities, borrowings under our revolving credit facility and issuance of equity.

Cash Management

To the extent possible, we invest our available cash in short-term, investment grade securities in accordance with our investment policy. Under our investment policy, we manage our investments in accordance with the priorities of maintaining the safety of our principal, maintaining the liquidity of our investments, maximizing the yield on our investments and investing our cash to the fullest extent possible. Our investment policy provides that no investment security can have a final maturity that exceeds six months and that the weighted average maturity of the portfolio cannot exceed 60 days. Cash and cash equivalents include cash on hand, amounts due from banks and short-term investments with maturity dates of three months or less at the date of purchase.

Dividend

During the six months ended June 30, 2020 and 2019, we declared and paid a quarterly dividend in the amount of $0.32 per share and $0.27 per share, respectively, on both classes of our common stock. While we expect to continue the cash dividend program, any future dividends declared will be at the discretion of our Board of Directors and will depend, among other factors, upon our results of operations, financial condition and cash requirements, as well as such other factors that our Board of Directors deems relevant.

Off-Balance Sheet Arrangements

In the ordinary course of business, we use letters of credit issued to satisfy certain contractual terms with our customers. As of June 30, 2020, $6.3 million in letters of credit were issued but undrawn. We have an outstanding performance bond in connection with a contract between ManTech MENA, LLC and Jadwalean International Operations and Management Company to fulfill technical support requirements for the Royal Saudi Air Force. This performance bond is guaranteed by a letter of credit in the amount of $5.7 million.

Critical Accounting Estimates and Policies

Critical accounting policies are defined as those that are reflective of significant judgments and uncertainties, and potentially result in materially different results under different assumptions and conditions. Application of these policies is particularly important to the portrayal of our financial condition and results of operations. The discussion and analysis of our financial condition

23

and results of operations are based on our condensed consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles (GAAP). The preparation of these condensed consolidated financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue and expenses. Actual results may differ from these estimates under different assumptions or conditions. Our significant accounting policies are described in "Critical Accounting Estimates and Policies" in Item 7 of our Annual Report on Form 10-K for the fiscal year ended December 31, 2019, previously filed with the SEC. There have been no material changes to our critical accounting estimates and policies from those discussed in our Annual Report on Form 10-K for the fiscal year ended December 31, 2019.

Recently Adopted Accounting Standards Updates

Accounting Standards Updates that became effective during the six months ended June 30, 2020 did not have a material impact on our condensed consolidated financial statements.

Recently Issued But Not Yet Adopted ASUs

ASUs effective after June 30, 2020 are not expected to have a material effect on our condensed consolidated financial statements.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

Our exposure to market risk relates to changes in interest rates for borrowing under our revolving credit facility. At June 30, 2020, we had an outstanding balance of $20.0 million on our revolving credit facility. Borrowings under our revolving credit facility bear interest at variable rates. A hypothetical 10% increase in interest rates would have a $0.2 million effect on our interest expense for the six months ended June 30, 2020.

We do not use derivative financial instruments for speculative or trading purposes. When we have excess cash, we invest in short-term, investment grade, interest-bearing securities. Our investments are made in accordance with an investment policy. Under this policy, no investment securities can have maturities exceeding six months and the weighted average maturity of the portfolio cannot exceed 60 days.

Item 4. Controls and Procedures

Management is responsible for establishing and maintaining adequate disclosure controls and procedures and internal control over financial reporting. Disclosure controls and procedures are designed to provide reasonable assurance that information required to be disclosed in our reports filed or submitted under the Exchange Act, such as this Quarterly Report on Form 10-Q, is accurately recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms. Disclosure controls and procedures are also designed to provide reasonable assurance that such information is accumulated and communicated to our management, including our principal executive officer and our principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

It should be noted that a control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints and the benefits of controls must be considered relative to their costs. The design of any system of controls also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. As a result, our disclosure controls and procedures are designed to provide reasonable assurance that such disclosure controls and procedures will meet their objectives.

As of June 30, 2020, under the supervision and with the participation of our Chief Executive Officer and Chief Financial Officer (our principal executive officer and principal financial officer, respectively), management evaluated the effectiveness of the design and operation of our disclosure controls and procedures pursuant to Rule 13a-15 of the Exchange Act. Based upon this evaluation, the Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures were effective at the reasonable assurance level described above.

There were no changes in our internal control over financial reporting during our last fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

24

PART II – OTHER INFORMATION

Item 1. Legal Proceedings

We are subject to certain legal proceedings, government audits, investigations, claims and disputes that arise in the ordinary course of our business. Like most large government defense contractors, our contract costs are audited and reviewed on a continual basis by an in-house staff of auditors from the Defense Contract Audit Agency. In addition to these routine audits, we are subject from time-to-time to audits and investigations by other agencies of the U.S. government. These audits and investigations are conducted to determine if our performance and administration of our government contracts are compliant with contractual requirements and applicable federal statutes and regulations. An audit or investigation may result in a finding that our performance, systems and administration are compliant or, alternatively, may result in the government initiating proceedings against us or our employees, including administrative proceedings seeking repayment of monies, suspension and/or debarment from doing business with the U.S. government or a particular agency or civil or criminal proceedings seeking penalties and/or fines. Audits and investigations conducted by the U.S. government frequently span several years.

Although we cannot predict the outcome of these and other legal proceedings, investigations, claims and disputes, based on the information now available to us, we do not believe the ultimate resolution of these matters, either individually or in the aggregate, will have a material adverse effect on our business, prospects, financial condition or operating results.

Item 6. Exhibits

Exhibits required by Item 601 of Regulation S-K:

Exhibit	Description of Exhibit
31.1‡	Certification of Chief Executive Officer pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934, as amended.
31.2‡	Certification of Chief Financial Officer pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934, as amended.
32‡	Certification of Chief Executive Officer and Chief Financial Officer pursuant to Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended.
101.INS	Inline XBRL Instance Document (the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document).
101.SCH	Inline XBRL Taxonomy Extension Schema Document.
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document.
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document.
104	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101).
* Management contract or compensatory plan or arrangement required to be filed as an Exhibit to this report pursuant to Item 15(a)(3).
‡ Filed herewith.

25

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.

		MANTECH INTERNATIONAL CORPORATION
		By:	/s/    KEVIN M. PHILLIPS
Date:	July 31, 2020	Name:	Kevin M. Phillips
		Title:	President and Chief Executive Officer

		By:	/s/    JUDITH L. BJORNAAS
Date:	July 31, 2020	Name:	Judith L. Bjornaas
		Title:	Chief Financial Officer

26

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Kevin M. Phillips, certify that:

1. I have reviewed this quarterly report on Form 10-Q of ManTech International Corporation;

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 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: July 31, 2020

By:	/s/    KEVIN M. PHILLIPS
Name:	Kevin M. Phillips
Title:	President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Judith L. Bjornaas, certify that:

1. I have reviewed this quarterly report on Form 10-Q of ManTech International Corporation;

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 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: July 31, 2020

By:	/s/    JUDITH L. BJORNAAS
Name:	Judith L. Bjornaas
Title:	Chief Financial Officer

EX-32

Exhibit 32

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

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 ManTech International Corporation (the “Company”) Quarterly Report on Form 10-Q for the period ending June 30, 2020 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), we, Kevin M. Phillips, President and Chief Executive Officer of the Company, and Judith L. Bjornaas, Chief Financial Officer of the Company, certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 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.

Date: July 31, 2020

By:	/s/    KEVIN M. PHILLIPS
Name:	Kevin M. Phillips
Title:	President and Chief Executive Officer

By:	/s/    JUDITH L. BJORNAAS
Name:	Judith L. Bjornaas
Title:	Chief Financial Officer

XML

Cover Page Cover Page - shares	6 Months Ended
	Jun. 30, 2020	Jul. 29, 2020
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2020
Document Transition Report	false
Entity File Number	000-49604
Entity Registrant Name	ManTech International Corporation
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	22-1852179
Entity Address, Address Line One	2251 Corporate Park Drive
Entity Address, City or Town	Herndon
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	20171
City Area Code	703
Local Phone Number	218-6000
Title of 12(b) Security	Class A Common Stock
Trading Symbol	MANT
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Small Reporting Company	false
Emerging Growth Company	false
Entity Shell Company	false
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Entity Central Index Key	0000892537
Current Fiscal Year End Date	--12-31
Class A common stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		27,145,551
Class B common stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		13,187,195

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
ASSETS
Cash and cash equivalents	$ 29,668	$ 8,854
Receivables—net	443,018	398,976
Prepaid expenses	38,172	20,030
Taxes receivable—current	6,586	21,996
Other current assets	6,089	4,878
Total Current Assets	523,533	454,734
Goodwill	1,191,270	1,191,259
Other intangible assets—net	188,651	196,778
Property and equipment—net	111,381	85,631
Operating lease right of use assets	102,187	117,728
Employee supplemental savings plan assets	32,740	36,777
Investments	11,549	11,550
Other assets	13,458	13,457
TOTAL ASSETS	2,174,769	2,107,914
LIABILITIES
Accounts payable and accrued expenses	146,936	146,016
Accrued salaries and related expenses	114,911	97,298
Contract liabilities	47,766	27,620
Operating lease obligations—current	29,063	29,047
Total Current Liabilities	338,676	299,981
Deferred income taxes	134,352	131,782
Operating lease obligations—long term	89,149	103,148
Accrued retirement	31,525	35,552
Long term debt	20,000	36,500
Other long-term liabilities	27,978	10,309
TOTAL LIABILITIES	641,680	617,272
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Additional paid-in capital	535,464	525,851
Treasury stock	(9,158)	(9,158)
Retained earnings	1,006,624	973,767
Accumulated other comprehensive loss	(247)	(222)
TOTAL STOCKHOLDERS' EQUITY	1,533,089	1,490,642
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	2,174,769	2,107,914
Class A common stock
STOCKHOLDERS' EQUITY
Common stock	274	272
TOTAL STOCKHOLDERS' EQUITY	274	272
Class B common stock
STOCKHOLDERS' EQUITY
Common stock	132	132
TOTAL STOCKHOLDERS' EQUITY	$ 132	$ 132

XML

Condensed Consolidated Balance Sheets Parentheticals - $ / shares	Jun. 30, 2020	Dec. 31, 2019
Treasury stock, Shares	244,113	244,113
Class A common stock
Common stock, Par value per share	$ 0.01	$ 0.01
Common stock, Shares authorized	150,000,000	150,000,000
Common stock, Shares issued	27,388,381	27,235,860
Common stock, Shares outstanding	27,144,268	26,991,747
Class B common stock
Common stock, Par value per share	$ 0.01	$ 0.01
Common stock, Shares authorized	50,000,000	50,000,000
Common stock, Shares issued	13,187,195	13,187,195
Common stock, Shares outstanding	13,187,195	13,187,195

XML

Condensed Consolidated Statements of Income - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
REVENUE	$ 632,492,000	$ 537,037,000	$ 1,243,404,000	$ 1,038,967,000
Cost of services	539,473,000	459,266,000	1,059,764,000	890,349,000
General and administrative expenses	53,433,000	44,474,000	105,156,000	86,789,000
OPERATING INCOME	39,586,000	33,297,000	78,484,000	61,829,000
Interest expense	(632,000)	(945,000)	(1,287,000)	(1,429,000)
Interest income	137,000	121,000	187,000	311,000
Other income (expense), net	0	31,000	(22,000)	(11,000)
INCOME FROM OPERATIONS BEFORE INCOME TAXES AND EQUITY METHOD INVESTMENTS	39,091,000	32,504,000	77,362,000	60,700,000
Provision for income taxes	(9,143,000)	(8,290,000)	(18,734,000)	(15,356,000)
Equity in (losses) of unconsolidated subsidiaries	0	0	(1,000)	(12,000)
NET INCOME	$ 29,948,000	$ 24,214,000	$ 58,627,000	$ 45,332,000
Class A common stock
BASIC EARNINGS PER SHARE:
Basic earnings per share	$ 0.74	$ 0.61	$ 1.46	$ 1.14
DILUTED EARNINGS PER SHARE:
Diluted earnings per share	0.74	0.60	1.44	1.13
Class B common stock
BASIC EARNINGS PER SHARE:
Basic earnings per share	0.74	0.61	1.46	1.14
DILUTED EARNINGS PER SHARE:
Diluted earnings per share	$ 0.74	$ 0.60	$ 1.44	$ 1.13

XML

Condensed Consolidated Statements of Comprehensive Income - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
NET INCOME	$ 29,948,000	$ 24,214,000	$ 58,627,000	$ 45,332,000
OTHER COMPREHENSIVE INCOME (LOSS):
Translation adjustments, net of tax	(8,000)	(7,000)	(25,000)	5,000
Cumulative-effect adjustment for adoption of Accounting Standards Update 2018-02	0	0	0	(24,000)
Total other comprehensive (loss)	(8,000)	(7,000)	(25,000)	(19,000)
COMPREHENSIVE INCOME	$ 29,940,000	$ 24,207,000	$ 58,602,000	$ 45,313,000

XML

Condensed Consolidated Statements of Changes in Stockholders' Equity Statement - USD ($)	Total	Common Stock, Class A	Common Stock, Class B	Additional Paid-In Capital	Treasury Stock, at cost	Retained Earnings	Accumulated Other Comprehensive Loss
At beginning of period at Dec. 31, 2018		$ 268,000	$ 132,000	$ 506,970,000	$ (9,158,000)	$ 903,084,000	$ (102,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	$ 3,250,000	1,000		3,249,000
Stock option exercises		1,000		4,978,000
Payment consideration to tax authority on employees' behalf				(1,357,000)
Net income	45,332,000					45,332,000
Dividends						(21,537,000)
Translation adjustments, net of tax	5,000						5,000
Cumulative-effect adjustment for adoption of Accounting Standards Update 2018-02	(24,000)						(24,000)
At end of period at Jun. 30, 2019	1,431,842,000	270,000	132,000	513,840,000	(9,158,000)	926,879,000	(121,000)
At beginning of period at Mar. 31, 2019		269,000	132,000	508,605,000	(9,158,000)	913,453,000	(114,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense		1,000		1,938,000
Stock option exercises		0		3,297,000
Payment consideration to tax authority on employees' behalf				0
Net income	24,214,000					24,214,000
Dividends						(10,788,000)
Translation adjustments, net of tax	(7,000)						(7,000)
Cumulative-effect adjustment for adoption of Accounting Standards Update 2018-02	0						0
At end of period at Jun. 30, 2019	1,431,842,000	270,000	132,000	513,840,000	(9,158,000)	926,879,000	(121,000)
At beginning of period at Dec. 31, 2019	1,490,642,000	272,000	132,000	525,851,000	(9,158,000)	973,767,000	(222,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	5,510,000	1,000		5,509,000
Stock option exercises		1,000		4,881,000
Payment consideration to tax authority on employees' behalf				(777,000)
Net income	58,627,000					58,627,000
Dividends						(25,770,000)
Translation adjustments, net of tax	(25,000)						(25,000)
Cumulative-effect adjustment for adoption of Accounting Standards Update 2018-02	0						0
At end of period at Jun. 30, 2020	1,533,089,000	274,000	132,000	535,464,000	(9,158,000)	1,006,624,000	(247,000)
At beginning of period at Mar. 31, 2020		273,000	132,000	529,763,000	(9,158,000)	989,578,000	(239,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense		1,000		2,874,000
Stock option exercises		0		2,827,000
Payment consideration to tax authority on employees' behalf				0
Net income	29,948,000					29,948,000
Dividends						(12,902,000)
Translation adjustments, net of tax	(8,000)						(8,000)
Cumulative-effect adjustment for adoption of Accounting Standards Update 2018-02	0						0
At end of period at Jun. 30, 2020	$ 1,533,089,000	$ 274,000	$ 132,000	$ 535,464,000	$ (9,158,000)	$ 1,006,624,000	$ (247,000)

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Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$ 58,627,000	$ 45,332,000
Adjustments to reconcile net income to net cash flow from (used in) operating activities:
Depreciation and amortization	33,154,000	25,630,000
Noncash lease expense	13,357,000	13,503,000
Deferred income taxes	2,570,000	5,468,000
Stock-based compensation expense	5,510,000	3,250,000
Bad debt expense	2,156,000	0
Contract loss reserve	(372,000)	(505,000)
Equity in losses of unconsolidated subsidiaries	1,000	12,000
Change in assets and liabilities—net of effects from acquired businesses:
Receivables—net	(46,198,000)	30,151,000
Prepaid expenses	(18,142,000)	(13,704,000)
Taxes receivable—current	15,410,000	(1,711,000)
Other current assets	1,026,000	2,896,000
Employee supplemental savings plan asset	(100,000)	(4,253,000)
Accounts payable and accrued expenses	2,196,000	11,522,000
Accrued salaries and related expenses	17,613,000	1,353,000
Operating lease obligations	(14,286,000)	(13,487,000)
Contract liabilities	20,146,000	15,317,000
Accrued retirement	(4,027,000)	1,977,000
Other long-term liabilities	17,687,000	280,000
Other	(1,651,000)	412,000
Net cash flow from operating activities	104,677,000	123,443,000
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Purchases of property and equipment	(45,600,000)	(21,946,000)
Investment in capitalized software	(5,016,000)	(1,952,000)
Proceeds from corporate owned life insurance	4,137,000	0
Proceeds from sale of property and equipment	869,000	0
Acquisition of a business-net of cash acquired	0	(114,552,000)
Deferred contract costs	0	(2,658,000)
Proceeds from equity method investment	0	283,000
Net cash used in investing activities	(45,610,000)	(140,825,000)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Borrowing under revolving credit facility	261,500,000	333,000,000
Repayments under revolving credit facility	(278,000,000)	(297,000,000)
Dividends paid	(25,782,000)	(21,548,000)
Proceeds from exercise of stock options	4,882,000	4,979,000
Payment consideration to tax authority on employees' behalf	(777,000)	(1,357,000)
Principal paid on financing leases	(76,000)	(62,000)
Net cash from (used in) financing activities	(38,253,000)	18,012,000
NET CHANGE IN CASH AND CASH EQUIVALENTS	20,814,000	630,000
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	8,854,000	5,294,000
CASH AND CASH EQUIVALENTS, END OF PERIOD	29,668,000	5,924,000
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for interest	1,256,000	1,248,000
Cash paid for income taxes, net of refunds	(1,493,000)	10,323,000
Noncash investing and financing activities:
Operating lease obligations arising from obtaining right of use assets	303,000	12,142,000
Finance lease obligations arising from obtaining right of use assets	63,000	352,000
Noncash investing activities	$ 2,528,000	$ 376,000

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Description of the Business (Notes)

6 Months Ended

Jun. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of the Business [Text Block]

Description of the Business

ManTech International Corporation (depending on the circumstances, “ManTech” “Company” “we” “our” “ours” or “us”) provides mission-focused technology solutions and services for U.S. defense, intelligence community and federal civilian agencies. We excel in full-spectrum cyber, data collection & analytics, enterprise information technology (IT) and systems engineering and software application development solutions that support national and homeland security.

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Basis of Presentation (Notes)

6 Months Ended

Jun. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation [Text Block]

Basis of Presentation

The accompanying condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). Certain information and note disclosures normally included in the annual financial statements, prepared in accordance with accounting principles generally accepted in the U.S., have been condensed or omitted pursuant to those rules and regulations. The preparation of these condensed consolidated financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue and expenses. We recommend that you read these condensed consolidated financial statements in conjunction with the audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2019, previously filed with the SEC. We believe that the condensed consolidated financial statements in this Form 10-Q reflect all adjustments that are necessary to fairly present the financial position, results of operations and cash flows for the interim periods presented. The results of operations for such interim periods are not necessarily indicative of the results that can be expected for the full year.

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Revenue from Contracts with Customers (Notes)

6 Months Ended

Jun. 30, 2020

Revenue from Contract with Customer [Abstract]

Revenue from Contracts with Customer [Text Block]

Revenue from Contracts with Customers

We derive revenue from contracts with customers primarily from contracts with the U.S. government in the areas of defense, intelligence, homeland security and other federal civilian agencies. Substantially all of our revenue is derived from services and solutions provided to the U.S. government or to prime contractors supporting the U.S. government, including services by our employees and our subcontractors, and solutions that include third-party hardware and software that we purchase and integrate as a part of our overall solutions. Customer requirements may vary from period-to-period depending on specific contract and customer requirements. We provide our services and solutions under three types of contracts: cost-reimbursable, fixed-price and time-and-materials. Under cost-reimbursable contracts, we are reimbursed for costs that are determined to be reasonable, allowable and allocable to the contract and paid a fee representing the profit margin negotiated between us and the contracting agency, which may be fixed or performance based. Under fixed-price contracts, we perform specific tasks for a fixed price. Fixed-price contracts may include either a product delivery or specific service performance over a defined period. Under time-and-materials contracts, we are reimbursed for labor at fixed hourly rates and are generally reimbursed separately for allowable materials and expenses at cost.

For contracts that do not meet the criteria to measure performance as a right to invoice under the series guidance, we utilize an Estimate at Completion process to measure progress toward completion. We typically estimate progress towards completion based on cost incurred or direct labor incurred. As part of this process, we review information including, but not limited to, any outstanding key contract matters, progress towards completion and the related program schedule, identified risks and opportunities and the related changes in estimates of revenue and costs. The risks and opportunities include judgments about the ability and cost to achieve the contract milestones and other technical contract requirements. We make assumptions and estimates regarding labor productivity and availability, the complexity of the work to be performed, the availability of materials, the length of time to complete the performance obligation, execution by our subcontractors, the availability and timing of funding from our customer and overhead cost rates, among other variables. A significant change in one or more of these estimates could affect the timing in which we recognize revenue on our contracts. For the three months ended June 30, 2020 and 2019, the aggregate impact of adjustments in contract estimates increased our revenue by $5.8 million and $3.5 million, respectively. For the six months ended June 30, 2020 and 2019, the aggregate impact of adjustments in contract estimates increased our revenue by $7.2 million and $5.6 million, respectively.

We have one reportable segment. Our U.S. government customers typically exercise independent decision-making and contracting authority. Offices or divisions within an agency or department of the U.S. government may directly, or through a prime contractor, use our services as a separate customer as long as the customer has independent decision-making and contracting authority within its organization. We treat sales to U.S. government customers as sales within the U.S. regardless of where the services are performed. We generated 99% of our revenue from sales in the U.S. for both the three months ended June 30, 2020 and 2019. We generated 99% of our revenue from sales in the U.S. for both the six months ended June 30, 2020 and 2019.

The following tables disclose revenue (in thousands) by contract type, customer and contractor type for the periods presented.

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
Cost-reimbursable	$	432,876	$	371,852	$	851,531	$	731,617
Fixed-price	120,359		108,028		241,914		203,091
Time-and-materials	79,257		57,157		149,959		104,259
Revenue	$	632,492	$	537,037	$	1,243,404	$	1,038,967

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
U.S. Government	$	622,627	$	524,976	$	1,223,155	$	1,015,993
State agencies, international agencies and commercial entities	9,865		12,061		20,249		22,974
Revenue	$	632,492	$	537,037	$	1,243,404	$	1,038,967

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
Prime contractor	$	577,377	$	477,986	$	1,132,545	$	924,505
Subcontractor	55,115		59,051		110,859		114,462
Revenue	$	632,492	$	537,037	$	1,243,404	$	1,038,967

The components of our receivables are as follows (in thousands):

	June 30, 2020			December 31, 2019
Billed receivables	$	357,092		$	311,061
Unbilled receivables	100,290			99,493
Allowance for doubtful accounts	(14,364		)	(11,578		)
Receivables—net	$	443,018		$	398,976

Receivables at June 30, 2020 are expected to be substantially collected within one year except for approximately $2.6 million, a majority is related to U.S. government receivables. We do not believe that we have significant exposure to credit risk as billed receivables and unbilled receivables are primarily due from the U.S. government. The allowance for doubtful accounts represents our estimate for exposure due to compliance, contractual issues and bad debts related to prime contractors.

The following table discloses contract liabilities (in thousands):

	June 30, 2020		December 31, 2019
Contract liabilities	$	47,766	$	27,620

Changes in the balance of contract liabilities are primarily due to the timing difference between our performance and our customers' payments. For the three months ended June 30, 2020, the amount of revenue that was included in the opening contract liabilities balance were $1.8 million. For the six months ended June 30, 2020, the amount of revenue that was included in the opening contract liabilities balance was $18.5 million.

The remaining performance obligation as of June 30, 2020 is $2.2 billion. The following table discloses when we expect to recognize the remaining performance obligation as revenue (in billions):

For the remaining six months ending December 31, 2020		For the year ending
		December 31, 2021		December 31, 2022		Thereafter
$	1.0	$	0.7	$	0.2	$	0.3

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Acquisitions (Notes)

6 Months Ended

Jun. 30, 2020

Business Combinations [Abstract]

Business Combination Disclosure [Text Block]

Acquisitions

H2M Group (H2M)—On August 8, 2019, we completed the acquisition of H2M through a membership interest purchase agreement by and among H2M Group, HHM Holding LLC, and the Members and ManTech International Corporation. H2M is a provider of intelligence and analysis services and solutions primarily to the National Geospatial-Intelligence Agency (NGA). This acquisition strengthens our ability to help key government agencies implement new automation techniques that enable intelligence analysts to more efficiently navigate large amounts of data and distill critical information to inform actionable intelligence and make mission-critical decisions.

The acquisition was accounted for as a business combination. The results of H2M's operations have been included in our condensed consolidated financial statements since that date. We funded the acquisition with cash on hand and borrowings on our revolving credit facility.

The purchase price of $38.5 million, which includes the finalized working capital adjustment, was allocated to the underlying assets and liabilities based on their estimated fair value at the date of acquisition. The excess of the purchase price over the fair value of assets acquired and liabilities assumed was recorded as goodwill. The purchase price allocation for H2M is complete as of June 30, 2020.

Determining the fair value of assets acquired and liabilities assumed requires significant judgment, which includes, among other factors, analysis of historical performance and estimates of future performance of H2M's contracts. In some cases, we have used discounted cash flow analyses, which were based on our best estimate of future revenue, earnings and cash flows as well as our discount rate adjusted for risk.

Recognition of goodwill is largely attributed to the value paid for H2M's capabilities to support government agencies in the implementation of high-quality geospatial and professional services. The goodwill recorded for this transaction will be deductible for tax purposes over 15 years. The components of other intangible assets associated with the acquisition were customer relationships and backlog valued at $9.6 million and $2.3 million, respectively. The fair values of the customer relationships and backlog were determined using the excess earnings method (income approach) in which the value is derived from an estimation of the after-tax cash flows specifically attributable to backlog and customer relationships. Assumptions used in the analysis included revenue and expense forecasts, contributory asset charges, tax amortization benefit and discount rates. Customer contracts and related relationships represent the underlying relationships and agreements with H2M's existing customers. Customer relationships are amortized using the pattern of benefits method over their estimated useful lives of approximately 20 years. Backlog is amortized using the pattern of benefits method over its estimated useful life of 2 years. The weighted-average amortization period for other intangible assets is 17 years.

The following table represents the purchase price allocation for H2M (in thousands):

Cash and cash equivalents	$	29
Receivables	4,187
Prepaid expenses	188
Other current assets	5
Goodwill	25,089
Other intangible assets	11,900
Operating lease right of use assets	152
Property and equipment	56
Other assets	7
Accounts payable and accrued expenses	(1,956		)
Accrued salaries and related expenses	(1,023		)
Operating lease obligations—long term	(152		)
Net assets acquired and liabilities assumed	$	38,482

Kforce Government Solutions (KGS)—On April 1, 2019, we completed the acquisition of KGS. KGS was a wholly owned subsidiary of the publicly traded commercial technology and staffing company KForce, Inc. The acquisition was completed through an equity purchase agreement dated February 28, 2019, by and among Kforce Government Solutions, Inc and other beneficiaries and ManTech International Corporation. KGS provides services, IT solutions, transformation and management consulting and data analytics - most notably in the healthcare IT market. This acquisition expands our presence with important customers such as the Department of Veteran Affairs (VA).

The acquisition was accounted for as a business combination. The results of KGS's operations have been included in our consolidated financial statements since that date. We funded the acquisition with cash on hand and borrowings on our revolving credit facility.

The purchase price of $114.6 million, which includes the finalized working capital adjustment, was allocated to the underlying assets and liabilities based on their estimated fair value at the date of acquisition. The excess of the purchase price over the fair value of assets acquired and liabilities assumed was recorded as goodwill. The purchase price allocation of KGS is complete as of June 30, 2020.

Determining the fair value of assets acquired and liabilities assumed requires significant judgment, which includes, among other factors, analysis of historical performance and estimates of future performance of KGS’s contracts. In some cases, we have used discounted cash flow analyses, which were based on our best estimate of future revenue, earnings and cash flows as well as our discount rate adjusted for risk.

Recognition of goodwill is largely attributed to the value paid for KGS's capabilities to support customers in IT solutions, transformation and management consulting and data analytics. A majority of the goodwill recorded will not be deductible for tax purposes.

The components of other intangible assets associated with the acquisition were customer relationships and backlog valued at $33.1 million and $1.6 million, respectively. The fair values of the customer relationships and backlog were determined using the excess earnings method (income approach) in which the value is derived from an estimation of the after-tax cash flows specifically attributable to backlog and customer relationships. Assumptions used in the analysis included revenue and expense forecasts, contributory asset charges, tax amortization benefit and discount rates. Customer contracts and related relationships represent the underlying relationships and agreements with KGS's existing customers. Customer relationships are amortized using the pattern of benefits method over their estimated useful lives of approximately 20 years. Backlog is amortized straight-line over its estimated useful life of 1 year. The weighted-average amortization period for other intangible assets is 19 years.

The following table represents the finalized purchase price allocation for KGS (in thousands):

Cash and cash equivalents	$	154
Receivables	17,071
Prepaid expenses	368
Other current assets	168
Goodwill	80,374
Other intangible assets	34,839
Property and equipment	361
Accounts payable and accrued expenses	(6,895		)
Accrued salaries and related expenses	(4,421		)
Deferred income taxes	(7,087		)
Other long-term liabilities	(379		)
Net assets acquired and liabilities assumed	$	114,553

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Earnings Per Share (Notes)

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

Earnings Per Share

Under ASC 260, Earnings per Share, the two-class method is an earnings allocation formula that determines earnings per share for each class of common stock according to dividends declared (or accumulated) and participation rights in undistributed earnings. Under that method, basic and diluted earnings per share data are presented for each class of common stock.

In applying the two-class method, we determined that undistributed earnings should be allocated equally on a per share basis between Class A and Class B common stock. Under our Certificate of Incorporation, the holders of the common stock are entitled to participate ratably, on a share-for-share basis as if all shares of common stock were of a single class, in such dividends as may be declared by the Board of Directors. During the six months ended June 30, 2020 and 2019, we declared and paid a quarterly dividend in the amount of $0.32 per share and $0.27 per share, respectively, on both classes of common stock.

Basic earnings per share has been computed by dividing net income available to common stockholders by the weighted average number of shares of common stock outstanding during each period. Shares issued during the period and shares reacquired during the period are weighted for the portion of the period in which the shares were outstanding. Diluted earnings per share have been computed in a manner consistent with that of basic earnings per share while giving effect to all potentially dilutive common shares that were outstanding during each period.

The net income available to common stockholders and weighted average number of common shares outstanding used to compute basic and diluted earnings per share for each class of common stock are as follows (in thousands, except per share amounts): 

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
Distributed earnings	$	12,902	$	10,788	$	25,770	$	21,537
Undistributed earnings	17,046		13,426		32,857		23,795
Net income	$	29,948	$	24,214	$	58,627	$	45,332
Class A common stock:
Basic net income available to common stockholders	$	20,141	$	16,210	$	39,407	$	30,324
Basic weighted average common shares outstanding	27,082		26,707		27,037		26,646
Basic earnings per share	$	0.74	$	0.61	$	1.46	$	1.14
Diluted net income available to common stockholders	$	20,220	$	16,255	$	39,576	$	30,411
Effect of potential exercise of stock options	327		229		358		232
Diluted weighted average common shares outstanding	27,409		26,936		27,395		26,878
Diluted earnings per share	$	0.74	$	0.60	$	1.44	$	1.13
Class B common stock:
Basic net income available to common stockholders	$	9,807	$	8,004	$	19,220	$	15,008
Basic weighted average common shares outstanding	13,187		13,188		13,187		13,188
Basic earnings per share	$	0.74	$	0.61	$	1.46	$	1.14
Diluted net income available to common stockholders	$	9,728	$	7,959	$	19,051	$	14,921
Diluted weighted average common shares outstanding	13,187		13,188		13,187		13,188
Diluted earnings per share	$	0.74	$	0.60	$	1.44	$	1.13

For the three months ended June 30, 2020 and 2019, options to purchase 228,816 shares and 479,685 shares, respectively, were outstanding but not included in the computation of diluted earnings per share because the options' effect would have been anti-dilutive. For the six months ended June 30, 2020 and 2019, options to purchase 231,938 shares and 496,859 shares, respectively, were outstanding but not included in the computation of diluted earnings per share because the options' effect would have been anti-dilutive. For the six months ended June 30, 2020 and 2019, there were 103,660 shares and 144,585 shares, respectively, issued from the exercise of stock options. For the six months ended June 30, 2020 and 2019 there were 48,861 shares and 72,493 shares, respectively, issued from the vesting of restricted stock units.

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Property and Equipment (Notes)

6 Months Ended

Jun. 30, 2020

Property, Plant and Equipment [Abstract]

Property and Equipment [Text Block]

Property and Equipment

Major classes of property and equipment are summarized as follows (in thousands):

	June 30, 2020			December 31, 2019
Furniture and equipment	$	184,038		$	150,640
Leasehold improvements	50,817			49,625
Finance leases	704			641
Property and equipment—gross	235,559			200,906
Accumulated depreciation and amortization	(124,178		)	(115,275		)
Property and equipment—net	$	111,381		$	85,631

Depreciation and amortization expense related to property and equipment for the three months ended June 30, 2020 and 2019 was $9.7 million and $6.2 million, respectively. Depreciation and amortization related to property and equipment for the six months ended June 30, 2020 and 2019 was $18.5 million and $12.5 million, respectively.

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Goodwill and Other Intangible Assets (Notes)

6 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets [Text Block]

Goodwill and Other Intangible Assets

The change in the carrying amount of goodwill during the year ended December 31, 2019 and six months ended June 30, 2020 are as follows (in thousands):

	Goodwill Balance
Goodwill at December 31, 2018	$	1,085,806
Acquisitions	105,453
Goodwill at December 31, 2019	1,191,259
Acquisition fair value adjustment	11
Goodwill at June 30, 2020	$	1,191,270

Other intangible assets consisted of the following (in thousands):

	June 30, 2020						December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Other intangible assets:
Contract and program intangible assets	$	402,532	$	231,971	$	170,561	$	402,532	$	221,437	$	181,095
Capitalized software	56,075		37,985		18,090		52,411		36,728		15,683
Total other intangible assets—net	$	458,607	$	269,956	$	188,651	$	454,943	$	258,165	$	196,778

Amortization expense relating to intangible assets for the three months ended June 30, 2020 and 2019 was $6.5 million and $6.1 million, respectively. Amortization expense relating to intangible assets for the six months ended June 30, 2020 and 2019 was $13.0 million and $11.9 million, respectively. We estimate that we will have the following amortization expense for the future periods indicated below (in thousands):

For the remaining six months ending December 31, 2020	$	12,865
For the year ending:
December 31, 2021	$	23,932
December 31, 2022	$	21,306
December 31, 2023	$	18,021
December 31, 2024	$	16,276
December 31, 2025	$	13,789

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Debt (Notes)

6 Months Ended

Jun. 30, 2020

Debt Disclosure [Abstract]

Debt [Text Block]

Debt

Revolving Credit Facility—We maintain a credit facility with a syndicate of lenders led by Bank of America, N.A., as sole administrative agent. The credit agreement provides for a $500 million revolving credit facility, with a $75 million letter of credit sublimit and a $30 million swing line loan sublimit. The credit agreement also includes an accordion feature that permits us to arrange with the lenders for the provision of additional commitments. The maturity date is August 17, 2022.

Borrowings under our credit agreement are collateralized by substantially all of our assets and those of our Material Subsidiaries (as defined in the credit agreement) and bear interest at one of the following variable rates as selected by us at the time of borrowing: a London Interbank Offer Rate base rate plus market-rate spreads (1.25% to 2.25% based on our consolidated total leverage ratio) or Bank of America's base rate plus market spreads (0.25% to 1.25% based on our consolidated total leverage ratio).

The terms of the credit agreement permit prepayment and termination of the loan commitments at any time, subject to certain

conditions. The credit agreement requires us to comply with specified financial covenants, including the maintenance of certain leverage ratios and a consolidated coverage ratio. The credit agreement also contains various covenants, including affirmative covenants with respect to certain reporting requirements and maintaining certain business activities, and negative covenants that, among other things, may limit or impose restrictions on our ability to incur liens, incur additional indebtedness, make investments, make acquisitions and undertake certain other actions. As of and during the six months ended June 30, 2020 and 2019, we were in compliance with the financial covenants under the credit agreement.

There was $20.0 million and $36.5 million outstanding on our revolving credit facility at June 30, 2020 and December 31, 2019, respectively. The maximum available borrowing under the revolving credit facility at June 30, 2020 was $473.7 million. As of June 30, 2020, we were contingently liable under letters of credit totaling $6.3 million, which reduces our availability to borrow under our revolving credit facility.

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Commitments and Contingencies (Notes)

6 Months Ended

Jun. 30, 2020

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies [Text Block]

Commitments and Contingencies

Contracts with the U.S. government, including subcontracts, are subject to extensive legal and regulatory requirements and, from time-to-time, agencies of the U.S. government, in the ordinary course of business, investigate whether our operations are conducted in accordance with these requirements and the terms of the relevant contracts. U.S. government investigations of us, whether related to our U.S. government contracts or conducted for other reasons, could result in administrative, civil or criminal liabilities, including repayments, fines or penalties being imposed upon us, or could lead to suspension or debarment from future U.S. government contracting activities. Management believes it has adequately reserved for any losses that may be experienced from any investigation of which it is aware. The Defense Contract Audit Agency has substantially completed our incurred cost audits through 2016 with no material adjustments. The remaining audits for 2017 through 2019 are not expected to have a material effect on our financial position, results of operations or cash flow and management believes it has adequately reserved for any losses.

In the normal course of business, we are involved in certain governmental and legal proceedings, claims and disputes and have litigation pending under several suits. We believe that the ultimate resolution of these matters will not have a material effect on our financial position, results of operations or cash flows.

We have $6.3 million outstanding on our letter of credit, of which $5.7 million is related to an outstanding performance bond in connection with a contract between ManTech MENA, LLC and Jadwalean International Operations and Management Company to fulfill technical support requirements for the Royal Saudi Air Force.

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Stock-Based Compensation (Notes)

6 Months Ended

Jun. 30, 2020

Share-based Payment Arrangement, Noncash Expense [Abstract]

Stock-Based Compensation [Text Block]

Stock-Based Compensation

Our 2016 Management Incentive Plan (the Plan) was designed to attract, retain and motivate key employees. The types of awards available under the Plan include, among others, stock options, restricted stock and restricted stock units (RSUs), among others. Equity awards granted under the Plan are settled in shares of Class A common stock. At the beginning of each year, the Plan provides that the number of shares available for issuance automatically increases by an amount equal to 1.5% of the total number of shares of Class A and Class B common stock outstanding on December 31^st of the previous year. On January 2, 2020, there were 602,684 additional shares made available for issuance under the Plan. Through June 30, 2020, the Board of Directors has authorized the issuance of up to 15,751,005 shares under this Plan. Through June 30, 2020, the remaining aggregate number of shares of our common stock available for future grants under the Plan was 7,068,410. The Plan expires in March 2026.

The Plan is administered by the compensation committee of our Board of Directors, along with its delegates. Subject to the express provisions of the Plan, the committee has the Board of Directors’ authority to administer and interpret the Plan, including the discretion to determine the exercise price, vesting schedule, contractual life and the number of shares to be issued.

Stock Compensation Expense—For the three months ended June 30, 2020 and 2019, we recorded $2.9 million and $1.9 million of stock-based compensation expense. For the six months ended June 30, 2020 and 2019, we recorded $5.5 million and $3.2 million of stock-based compensation expense. No compensation expense of employees with stock awards, including stock-based compensation expense, was capitalized during the periods. For the three months ended June 30, 2020 and 2019, we recorded $0.3 million and $0.5 million, respectively, to income tax benefit related to the exercise of stock options, vested cancellations and the vesting of restricted stock and restricted stock units. For the six months ended June 30, 2020 and 2019, we recorded $0.8 million and $0.7 million, respectively, to income tax benefit related to the exercise of stock options, vested cancellations and the vesting of restricted stock and restricted stock units.

Stock Options—Under the Plan, we have issued stock options. A stock option gives the holder the right, but not the obligation to purchase a certain number of shares at a predetermined price for a specific period.

Fair Value Determination—We have used the Black-Scholes-Merton option pricing model to determine the fair value of our awards on the date of grant. We will reconsider the use of the Black-Scholes-Merton model if additional information becomes available in the future that indicates another model would be more appropriate or if grants issued in future periods have characteristics that cannot be reasonably estimated under this model.

There were no option grants during the six months ended June 30, 2020. The following weighted-average assumptions were used for option grants during the six months ended June 30, 2019:

• Volatility—The expected volatility of the options granted was estimated based upon historical volatility of our share price through weekly observations of our trading history.

• Expected life of options—The expected life of options granted to employees was determined from historical exercises of the grantee population. The options had graded vesting over three years in equal installments beginning on the first anniversary of the date of grant and a contractual term of five years.

• Risk-free interest rate—The yield on zero-coupon U.S. Treasury strips was used to extrapolate a forward-yield curve. This “term structure” of future interest rates was then input into a numeric model to provide the equivalent risk-free rate to be used in the Black-Scholes-Merton model based on the expected term of the underlying grants.

• Dividend Yield—The Black-Scholes-Merton valuation model requires an expected dividend yield as an input. For the six months ended June 30, 2019, we have calculated our expected dividend yield based on an expected annual cash dividend of $1.08 per share.

The following table summarizes weighted-average assumptions used in our calculations of fair value for the six months ended June 30, 2019:

	Six months ended June 30, 2019
Volatility	27.00	%
Expected life of options	3 years
Risk-free interest rate	2.39	%
Dividend yield	2.00	%

Stock Option Activity—No options were granted during the six months ended June 30, 2020. The weighted-average fair value of options granted during the six months ended June 30, 2019, as determined under the Black-Scholes-Merton valuation model, was $10.07. Option grants that vested during the six months ended June 30, 2020 and 2019 had a combined fair value of $1.7 million and $1.2 million, respectively.

The following table summarizes stock option activity for the year ended December 31, 2019 and the six months ended June 30, 2020:

	Number of Shares		Weighted Average Exercise Price		Aggregate Intrinsic Value (in thousands)		Weighted Average Remaining Contractual Life
Stock options outstanding at December 31, 2018	1,093,400		$	45.34	$	8,776
Granted	489,947		$	63.87
Exercised	(338,748	)	$	37.94	$	9,641
Cancelled and expired	(108,504	)	$	51.21
Stock options outstanding at December 31, 2019	1,136,095		$	54.98	$	28,291
Exercised	(103,660	)	$	47.10	$	3,227
Cancelled and expired	(98,446	)	$	60.89
Stock options outstanding at June 30, 2020	933,989		$	55.23	$	13,662	3 years
Stock options exercisable at June 30, 2020	382,652		$	46.37	$	8,467	2 years

The following table summarizes non-vested stock options for the six months ended June 30, 2020:

	Number of Shares		Weighted Average Fair Value
Non-vested stock options at December 31, 2019	845,555		$	10.88
Vested	(197,689	)	$	8.76
Cancelled	(96,529	)	$	11.56
Non-vested stock options at June 30, 2020	551,337		$	11.52

Unrecognized compensation expense related to non-vested awards was $4.7 million as of June 30, 2020, which is expected to be recognized over a weighted-average period of 2 years.

Restricted Stock—Under the Plan, we have issued restricted stock. A restricted stock award is an issuance of shares that cannot be sold or transferred by the recipient until the vesting period lapses. Restricted stock issued to members of our Board of Directors vest on the one year anniversary of the grant date. The related compensation expense is recognized over the service period and is based on the grant date fair value of the stock. The grant date fair value of the restricted stock is equal to the closing market price of our common stock on the date of grant.

Restricted Stock Activity—The following table summarizes the restricted stock activity during the year ended December 31, 2019 and the six months ended June 30, 2020.

	Number of Shares		Weighted Average Fair Value
Non-vested restricted stock at December 31, 2018	20,000		$	52.83
Granted	24,000		$	62.66
Vested	(20,000	)	$	52.83
Non-vested restricted stock at December 31, 2019	24,000		$	62.66
Granted	24,000		$	71.11
Vested	(24,000	)	$	62.66
Non-vested restricted stock at June 30, 2020	24,000		$	71.11

RSUs—Under the Plan, we have issued restricted stock units (RSUs). RSUs are not actual shares, but rather a right to receive shares in the future. The shares are not issued and the employee cannot sell or transfer shares prior to vesting and have no voting rights until the RSUs vest. Employees who are granted RSUs do not receive dividend payments during the vesting period. Our employees' performance-based RSUs will result in the delivery of shares if (a) performance criteria is met and (b) the employee

remains employed, in good standing, through the date of the performance period. Our employees' time-based RSUs will result in the delivery of shares in one-third increments on the first, second and third anniversaries of the date of grant. The grant date fair value of the RSUs is equal to the closing market price of our common stock on the grant date less the present value of dividends expected to be awarded during the service period. We recognize the grant date fair value of RSUs of shares we expect to issue as compensation expense ratably over the requisite service period.

RSU Activity—For performance-based RSUs that vested in the six months ended June 30, 2020, each RSU awarded resulted in the issuance of one share, which were issued net of applicable payroll tax withholdings. For the year ended December 31, 2019, each RSU awarded resulted in the issuance of 1.5 shares, which were issued net of applicable payroll tax withholdings. The following table summarizes the non-vested RSU activity during the year ended December 31, 2019 and the six months ended June 30, 2020:

	Number of Units		Weighted Average Fair Value
Non-vested RSUs at December 31, 2018	137,596		$	45.11
Granted	145,440		$	59.43
Vested	(60,915	)	$	42.75
Forfeited	(11,294	)	$	51.88
Non-vested RSUs at December 31, 2019	210,827		$	55.31
Granted	187,450		$	68.29
Vested	(35,882	)	$	51.80
Forfeited	(43,970	)	$	63.59
Non-vested RSUs at June 30, 2020	318,425		$	62.21

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Revenue from Contracts with Customers (Tables)

6 Months Ended

Jun. 30, 2020

Revenue from Contract with Customer [Abstract]

Revenue by Contract Type [Table Text Block]

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
Cost-reimbursable	$	432,876	$	371,852	$	851,531	$	731,617
Fixed-price	120,359		108,028		241,914		203,091
Time-and-materials	79,257		57,157		149,959		104,259
Revenue	$	632,492	$	537,037	$	1,243,404	$	1,038,967

Revenue by Customer [Table Text Block]

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
U.S. Government	$	622,627	$	524,976	$	1,223,155	$	1,015,993
State agencies, international agencies and commercial entities	9,865		12,061		20,249		22,974
Revenue	$	632,492	$	537,037	$	1,243,404	$	1,038,967

Revenue by Contractor Type [Table Text Block]

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
Prime contractor	$	577,377	$	477,986	$	1,132,545	$	924,505
Subcontractor	55,115		59,051		110,859		114,462
Revenue	$	632,492	$	537,037	$	1,243,404	$	1,038,967

Schedule Of Contract Receivables [Table Text Block]

The components of our receivables are as follows (in thousands):

	June 30, 2020			December 31, 2019
Billed receivables	$	357,092		$	311,061
Unbilled receivables	100,290			99,493
Allowance for doubtful accounts	(14,364		)	(11,578		)
Receivables—net	$	443,018		$	398,976

Contract with Customer, Asset and Liability [Table Text Block]

The following table discloses contract liabilities (in thousands):

	June 30, 2020		December 31, 2019
Contract liabilities	$	47,766	$	27,620

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]

The following table discloses when we expect to recognize the remaining performance obligation as revenue (in billions):

For the remaining six months ending December 31, 2020		For the year ending
		December 31, 2021		December 31, 2022		Thereafter
$	1.0	$	0.7	$	0.2	$	0.3

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Acquisitions (Tables)

6 Months Ended

Jun. 30, 2020

H2M Group [Member]

Business Acquisition [Line Items]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

The following table represents the purchase price allocation for H2M (in thousands):

Cash and cash equivalents	$	29
Receivables	4,187
Prepaid expenses	188
Other current assets	5
Goodwill	25,089
Other intangible assets	11,900
Operating lease right of use assets	152
Property and equipment	56
Other assets	7
Accounts payable and accrued expenses	(1,956		)
Accrued salaries and related expenses	(1,023		)
Operating lease obligations—long term	(152		)
Net assets acquired and liabilities assumed	$	38,482

Kforce Government Solutions [Member]

Business Acquisition [Line Items]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

The following table represents the finalized purchase price allocation for KGS (in thousands):

Cash and cash equivalents	$	154
Receivables	17,071
Prepaid expenses	368
Other current assets	168
Goodwill	80,374
Other intangible assets	34,839
Property and equipment	361
Accounts payable and accrued expenses	(6,895		)
Accrued salaries and related expenses	(4,421		)
Deferred income taxes	(7,087		)
Other long-term liabilities	(379		)
Net assets acquired and liabilities assumed	$	114,553

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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The net income available to common stockholders and weighted average number of common shares outstanding used to compute basic and diluted earnings per share for each class of common stock are as follows (in thousands, except per share amounts): 

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
Distributed earnings	$	12,902	$	10,788	$	25,770	$	21,537
Undistributed earnings	17,046		13,426		32,857		23,795
Net income	$	29,948	$	24,214	$	58,627	$	45,332
Class A common stock:
Basic net income available to common stockholders	$	20,141	$	16,210	$	39,407	$	30,324
Basic weighted average common shares outstanding	27,082		26,707		27,037		26,646
Basic earnings per share	$	0.74	$	0.61	$	1.46	$	1.14
Diluted net income available to common stockholders	$	20,220	$	16,255	$	39,576	$	30,411
Effect of potential exercise of stock options	327		229		358		232
Diluted weighted average common shares outstanding	27,409		26,936		27,395		26,878
Diluted earnings per share	$	0.74	$	0.60	$	1.44	$	1.13
Class B common stock:
Basic net income available to common stockholders	$	9,807	$	8,004	$	19,220	$	15,008
Basic weighted average common shares outstanding	13,187		13,188		13,187		13,188
Basic earnings per share	$	0.74	$	0.61	$	1.46	$	1.14
Diluted net income available to common stockholders	$	9,728	$	7,959	$	19,051	$	14,921
Diluted weighted average common shares outstanding	13,187		13,188		13,187		13,188
Diluted earnings per share	$	0.74	$	0.60	$	1.44	$	1.13

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Property and Equipment (Tables)

6 Months Ended

Jun. 30, 2020

Property, Plant and Equipment [Abstract]

Property and Equipment [Table Text Block]

Major classes of property and equipment are summarized as follows (in thousands):

	June 30, 2020			December 31, 2019
Furniture and equipment	$	184,038		$	150,640
Leasehold improvements	50,817			49,625
Finance leases	704			641
Property and equipment—gross	235,559			200,906
Accumulated depreciation and amortization	(124,178		)	(115,275		)
Property and equipment—net	$	111,381		$	85,631

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Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

The change in the carrying amount of goodwill during the year ended December 31, 2019 and six months ended June 30, 2020 are as follows (in thousands):

	Goodwill Balance
Goodwill at December 31, 2018	$	1,085,806
Acquisitions	105,453
Goodwill at December 31, 2019	1,191,259
Acquisition fair value adjustment	11
Goodwill at June 30, 2020	$	1,191,270

Schedule of Other Intangible Assets [Table Text Block]

Other intangible assets consisted of the following (in thousands):

	June 30, 2020						December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Other intangible assets:
Contract and program intangible assets	$	402,532	$	231,971	$	170,561	$	402,532	$	221,437	$	181,095
Capitalized software	56,075		37,985		18,090		52,411		36,728		15,683
Total other intangible assets—net	$	458,607	$	269,956	$	188,651	$	454,943	$	258,165	$	196,778

Schedule of Other Intangible Assets, Future Amortization Expense [Table Text Block]

We estimate that we will have the following amortization expense for the future periods indicated below (in thousands):

For the remaining six months ending December 31, 2020	$	12,865
For the year ending:
December 31, 2021	$	23,932
December 31, 2022	$	21,306
December 31, 2023	$	18,021
December 31, 2024	$	16,276
December 31, 2025	$	13,789

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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2020

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The following table summarizes weighted-average assumptions used in our calculations of fair value for the six months ended June 30, 2019:

	Six months ended June 30, 2019
Volatility	27.00	%
Expected life of options	3 years
Risk-free interest rate	2.39	%
Dividend yield	2.00	%

Share-based Payment Arrangement, Option, Activity [Table Text Block]

The following table summarizes stock option activity for the year ended December 31, 2019 and the six months ended June 30, 2020:

	Number of Shares		Weighted Average Exercise Price		Aggregate Intrinsic Value (in thousands)		Weighted Average Remaining Contractual Life
Stock options outstanding at December 31, 2018	1,093,400		$	45.34	$	8,776
Granted	489,947		$	63.87
Exercised	(338,748	)	$	37.94	$	9,641
Cancelled and expired	(108,504	)	$	51.21
Stock options outstanding at December 31, 2019	1,136,095		$	54.98	$	28,291
Exercised	(103,660	)	$	47.10	$	3,227
Cancelled and expired	(98,446	)	$	60.89
Stock options outstanding at June 30, 2020	933,989		$	55.23	$	13,662	3 years
Stock options exercisable at June 30, 2020	382,652		$	46.37	$	8,467	2 years

Schedule of Non-vested Share Activity [Table Text Block]

The following table summarizes non-vested stock options for the six months ended June 30, 2020:

	Number of Shares		Weighted Average Fair Value
Non-vested stock options at December 31, 2019	845,555		$	10.88
Vested	(197,689	)	$	8.76
Cancelled	(96,529	)	$	11.56
Non-vested stock options at June 30, 2020	551,337		$	11.52

Restricted Stock [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Share-based Compensation, Restricted Stock Activity [Table Text Block]

The following table summarizes the restricted stock activity during the year ended December 31, 2019 and the six months ended June 30, 2020.

	Number of Shares		Weighted Average Fair Value
Non-vested restricted stock at December 31, 2018	20,000		$	52.83
Granted	24,000		$	62.66
Vested	(20,000	)	$	52.83
Non-vested restricted stock at December 31, 2019	24,000		$	62.66
Granted	24,000		$	71.11
Vested	(24,000	)	$	62.66
Non-vested restricted stock at June 30, 2020	24,000		$	71.11

Restricted Stock Units (RSUs) [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Share-based Compensation, Restricted Stock Activity [Table Text Block]

The following table summarizes the non-vested RSU activity during the year ended December 31, 2019 and the six months ended June 30, 2020:

	Number of Units		Weighted Average Fair Value
Non-vested RSUs at December 31, 2018	137,596		$	45.11
Granted	145,440		$	59.43
Vested	(60,915	)	$	42.75
Forfeited	(11,294	)	$	51.88
Non-vested RSUs at December 31, 2019	210,827		$	55.31
Granted	187,450		$	68.29
Vested	(35,882	)	$	51.80
Forfeited	(43,970	)	$	63.59
Non-vested RSUs at June 30, 2020	318,425		$	62.21

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Revenue from Contracts with Customers Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) Entities	Jun. 30, 2019 USD ($)
Revenue from Contract with Customers [Line Items]
Contract with Customer, Asset, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress	$ 5.8	$ 3.5	$ 7.2	$ 5.6
Number of Reportable Segments | Entities			1
Contract Receivable, Due after Next Rolling Twelve Months	2.6		$ 2.6
Contract with Customer, Liability, Revenue Recognized	1.8		18.5
Revenue, Remaining Performance Obligation, Amount	$ 2,200.0		$ 2,200.0
UNITED STATES | Revenue from Contract with Customer, Segment Benchmark [Member]
Revenue from Contract with Customers [Line Items]
Concentration Risk, Percentage	99.00%	99.00%	99.00%	99.00%

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Revenue from Contracts with Customers Revenue by Contract Type (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue by Contract Type [Line Items]
Revenue	$ 632,492	$ 537,037	$ 1,243,404	$ 1,038,967
Cost-reimbursable
Revenue by Contract Type [Line Items]
Revenue	432,876	371,852	851,531	731,617
Fixed-price
Revenue by Contract Type [Line Items]
Revenue	120,359	108,028	241,914	203,091
Time-and-materials
Revenue by Contract Type [Line Items]
Revenue	$ 79,257	$ 57,157	$ 149,959	$ 104,259

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Revenue from Contracts with Customers Revenue by Customer (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue from External Customer [Line Items]
Revenue	$ 632,492	$ 537,037	$ 1,243,404	$ 1,038,967
U.S. Government
Revenue from External Customer [Line Items]
Revenue	622,627	524,976	1,223,155	1,015,993
State agencies, international agencies and commercial entities
Revenue from External Customer [Line Items]
Revenue	$ 9,865	$ 12,061	$ 20,249	$ 22,974

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Revenue from Contracts with Customers Revenue by Contractor Type (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue by Contractor Type [Line Items]
Revenue	$ 632,492	$ 537,037	$ 1,243,404	$ 1,038,967
Prime contractor
Revenue by Contractor Type [Line Items]
Revenue	577,377	477,986	1,132,545	924,505
Subcontractor
Revenue by Contractor Type [Line Items]
Revenue	$ 55,115	$ 59,051	$ 110,859	$ 114,462

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Revenue from Contracts with Customers Schedule of Contract Receivables (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Billed receivables	$ 357,092	$ 311,061
Unbilled receivables	100,290	99,493
Allowance for doubtful accounts	(14,364)	(11,578)
Receivables—net	$ 443,018	$ 398,976

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Revenue from Contracts with Customers Contract with Customer, Asset and Liability (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Contract liabilities	$ 47,766	$ 27,620

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Revenue from Contracts with Customers Revenue, Remaining Performance Obligation (Details) $ in Billions	Jun. 30, 2020 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 2.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	6 months
Revenue, Remaining Performance Obligation, Amount	$ 1.0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Amount	$ 0.7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Amount	$ 0.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
Revenue, Remaining Performance Obligation, Amount	$ 0.3

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Acquisitions Narrative (Details) $ in Millions	6 Months Ended
	Jun. 30, 2020 USD ($)
H2M Group [Member]
Business Combination, Consideration Transferred	$ 38.5
Expected Goodwill Tax Amortization Period	15 years
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	17 years
Kforce Government Solutions [Member]
Business Combination, Consideration Transferred	$ 114.6
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	19 years
Customer Relationships [Member] | H2M Group [Member]
Finite-Lived Intangible Assets Acquired	$ 9.6
Finite-Lived Intangible Asset, Useful Life	20 years
Customer Relationships [Member] | Kforce Government Solutions [Member]
Finite-Lived Intangible Assets Acquired	$ 33.1
Finite-Lived Intangible Asset, Useful Life	20 years
Backlog [Member] | H2M Group [Member]
Finite-Lived Intangible Assets Acquired	$ 2.3
Finite-Lived Intangible Asset, Useful Life	2 years
Backlog [Member] | Kforce Government Solutions [Member]
Finite-Lived Intangible Assets Acquired	$ 1.6
Finite-Lived Intangible Asset, Useful Life	1 year

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Acquisitions Schedule of Purchase Price Allocation (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill	$ 1,191,270	$ 1,191,259	$ 1,085,806
H2M Group [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	29
Receivables	4,187
Prepaid expenses	188
Other current assets	5
Goodwill	25,089
Other intangible assets	11,900
Operating lease right of use assets	152
Property and equipment	56
Other assets	7
Accounts payable and accrued expenses	(1,956)
Accrued salaries and related expenses	(1,023)
Operating lease obligations—long term	(152)
Net assets acquired and liabilities assumed	38,482
Kforce Government Solutions [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	154
Receivables	17,071
Prepaid expenses	368
Other current assets	168
Goodwill	80,374
Other intangible assets	34,839
Property and equipment	361
Accounts payable and accrued expenses	(6,895)
Accrued salaries and related expenses	(4,421)
Deferred income taxes	(7,087)
Other long-term liabilities	(379)
Net assets acquired and liabilities assumed	$ 114,553

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Earnings Per Share (Narrative) (Details) - $ / shares	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Earnings Per Share [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 0.32	$ 0.32	$ 0.27	$ 0.27
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	228,816		479,685		231,938	496,859
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period					103,660	144,585	338,748
Stock Issued During Period, Shares, Restricted Stock Vesting					48,861	72,493

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Earnings Per Share (Schedule of Earnings Per Share, Basic and Diluted) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Components of Earnings Per Share, Basic and Diluted [Line Items]
Distributed earnings	$ 12,902	$ 10,788	$ 25,770	$ 21,537
Undistributed earnings	17,046	13,426	32,857	23,795
Net income	29,948	24,214	58,627	45,332
Class A common stock
Components of Earnings Per Share, Basic and Diluted [Line Items]
Basic net income available to common stockholders	$ 20,141	$ 16,210	$ 39,407	$ 30,324
Basic weighted average common shares outstanding	27,082	26,707	27,037	26,646
Basic earnings per share	$ 0.74	$ 0.61	$ 1.46	$ 1.14
Diluted net income available to common stockholders	$ 20,220	$ 16,255	$ 39,576	$ 30,411
Effect of potential exercise of stock options	327	229	358	232
Diluted weighted average common shares outstanding	27,409	26,936	27,395	26,878
Diluted earnings per share	$ 0.74	$ 0.60	$ 1.44	$ 1.13
Class B common stock
Components of Earnings Per Share, Basic and Diluted [Line Items]
Basic net income available to common stockholders	$ 9,807	$ 8,004	$ 19,220	$ 15,008
Basic weighted average common shares outstanding	13,187	13,188	13,187	13,188
Basic earnings per share	$ 0.74	$ 0.61	$ 1.46	$ 1.14
Diluted net income available to common stockholders	$ 9,728	$ 7,959	$ 19,051	$ 14,921
Diluted weighted average common shares outstanding	13,187	13,188	13,187	13,188
Diluted earnings per share	$ 0.74	$ 0.60	$ 1.44	$ 1.13

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Property and Equipment (Property and Equipment) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Furniture and equipment	$ 184,038	$ 150,640
Leasehold improvements	50,817	49,625
Finance leases	704	641
Property and equipment—gross	235,559	200,906
Accumulated depreciation and amortization	(124,178)	(115,275)
Property and equipment—net	$ 111,381	$ 85,631

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Property and Equipment Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Property, Plant and Equipment [Abstract]
Depreciation and amortization expense related to property and equipment	$ 9.7	$ 6.2	$ 18.5	$ 12.5

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Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of Intangible Assets	$ 6.5	$ 6.1	$ 13.0	$ 11.9

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Goodwill and Other Intangible Assets (Schedule of Goodwill) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Goodwill	$ 1,191,259	$ 1,085,806
Acquisitions		105,453
Acquisition fair value adjustment	11
Goodwill	$ 1,191,270	$ 1,191,259

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Goodwill and Other Intangible Assets (Schedule of Other Intangible Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 458,607	$ 454,943
Accumulated Amortization	269,956	258,165
Net Carrying Amount	188,651	196,778
Contract and program intangible assets
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	402,532	402,532
Accumulated Amortization	231,971	221,437
Net Carrying Amount	170,561	181,095
Capitalized software
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	56,075	52,411
Accumulated Amortization	37,985	36,728
Net Carrying Amount	$ 18,090	$ 15,683

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Goodwill and Other Intangible Assets (Schedule of Other Intangible Assets, Future Amortization Expense) (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
For the remaining six months ending December 31, 2020	$ 12,865
For the year ending:
December 31, 2021	23,932
December 31, 2022	21,306
December 31, 2023	18,021
December 31, 2024	16,276
December 31, 2025	$ 13,789

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Debt (Revolving Credit Facility) (Narrative) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Line of Credit Facility [Line Items]
Long-term Line of Credit	$ 20,000,000	$ 36,500,000
Bank of America Syndicate [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	500,000,000
Long-term Line of Credit	20,000,000.0	$ 36,500,000
Line of Credit Facility, Remaining Borrowing Capacity	473,700,000
Bank of America Syndicate [Member] | Letter of Credit [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	75,000,000
Contingent Liability under Letters of Credit	6,300,000
Bank of America Syndicate [Member] | Revolving Credit Facility, Swing Line Loan [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 30,000,000
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.25%
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.25%
Bank of America's Base Rate [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.25%
Bank of America's Base Rate [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.25%

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Commitments and Contingencies (Letter of Credit) (Narrative) (Details) - Letter of Credit [Member] - Bank of America Syndicate [Member] $ in Millions	Jun. 30, 2020 USD ($)
Line of Credit Facility [Line Items]
Letters of Credit Outstanding, Amount	$ 6.3
Performance Guarantee [Member]
Line of Credit Facility [Line Items]
Letters of Credit Outstanding, Amount	$ 5.7

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Stock-Based Compensation (Narrative) (Details) - USD ($)		3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 02, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual Percentage Increase In Number Of Shares Available For Issuance	1.50%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	602,684
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		15,751,005		15,751,005
Remaining Aggregate Number of Shares Available For Issuance		7,068,410		7,068,410
Share-based Compensation		$ 2,900,000	$ 1,900,000	$ 5,500,000	$ 3,200,000
Share-based Payment Arrangement, Amount Capitalized				0	0
Income tax expense (benefit) related to the exercise of stock options, vested cancellations and the vesting of restricted stock and restricted stock units		(300,000)	$ (500,000)	$ (800,000)	$ (700,000)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross				0		489,947
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period					3 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period					5 years
Expected Annual Cash Dividend					$ 1.08
Granted, Weighted Average Fair Value					$ 10.07
Share-based Payment Award, Options, Vested, Fair Value				$ 1,700,000	$ 1,200,000
Share-based Compensation, Nonvested Awards, Total Compensation Cost Not Yet Recognized		$ 4,700,000		$ 4,700,000
Share-based Compensation, Nonvested Awards, Total Compensation Cost Not Yet Recognized, Period for Recognition				2 years
Restricted Stock [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period				1 year	1 year
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSU Performance Factor, Number of Shares Issued				1		1.5

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Stock-Based Compensation (Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions) (Details)	6 Months Ended
	Jun. 30, 2019
Share-based Payment Arrangement, Noncash Expense [Abstract]
Volatility	27.00%
Expected life of options	3 years
Risk-free interest rate	2.39%
Dividend yield	2.00%

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Stock-Based Compensation (Schedule of Share-based Compensation, Stock Options, Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Share-based Payment Award, Options, Outstanding [Roll Forward]
Stock options, Number of Shares, Period Start	1,136,095	1,093,400	1,093,400
Granted, Number of Shares	0		489,947
Exercised, Number of Shares	(103,660)	(144,585)	(338,748)
Cancelled and expired, Number of Shares	(98,446)		(108,504)
Stock options, Number of Shares, Period End	933,989		1,136,095
Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Stock options, Weighted Average Exercise Price, Period Start	$ 54.98	$ 45.34	$ 45.34
Granted, Weighted Average Exercise Price			63.87
Exercised, Weighted Average Exercise Price	47.10		37.94
Cancelled and expired, Weighted Average Exercise Price	60.89		51.21
Stock options, Weighted Average Exercise Price, Period End	$ 55.23		$ 54.98
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Stock options outstanding, Aggregate Intrinsic Value	$ 13,662		$ 28,291	$ 8,776
Exercised, Aggregate Intrinsic Value	$ 3,227		$ 9,641
Stock options outstanding, Weighted Average Remaining Contractual Life	3 years
Stock options exercisable, Number of Shares	382,652
Stock options exercisable, Weighted Average Exercise Price	$ 46.37
Stock options exercisable, Aggregate Intrinsic Value	$ 8,467
Stock options exercisable, Weighted Average Remaining Contractual Life	2 years

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Stock-Based Compensation (Schedule of Non-vested Share Activity) (Details)	6 Months Ended
	Jun. 30, 2020 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Non-vested [Roll Forward]
Non-vested stock options, Number of Shares, Period Start | shares	845,555
Vested, Number of Shares | shares	(197,689)
Cancelled, Number of Shares | shares	(96,529)
Non-vested stock options, Number of Shares, Period End | shares	551,337
Share-based Compensation Arrangement by Share-based Payment Award, Options, Non-vested, Weighted Average Grant Date Fair Value [Roll Forward]
Non-vested stock options, Weighted Average Fair Value, Period Start | $ / shares	$ 10.88
Vested, Weighted Average Fair Value | $ / shares	8.76
Cancelled, Weighted Average Fair Value | $ / shares	11.56
Non-vested stock options, Weighted Average Fair Value, Period End | $ / shares	$ 11.52

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Stock-Based Compensation (Schedule Of Share-based Compensation, Restricted Stock Activity) (Details) - Restricted Stock [Member] - $ / shares	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Restricted Stock, Non-vested [Roll Forward]
Non-vested, Period Start	24,000	20,000
Granted	24,000	24,000
Vested	(24,000)	(20,000)
Non-vested, Period End	24,000	24,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Non-vested, Weighted Average Fair Value, Period Start	$ 62.66	$ 52.83
Granted, Weighted Average Fair Value	71.11	62.66
Vested, Weighted Average Fair Value	62.66	52.83
Non-vested, Weighted Average Fair Value, Period End	$ 71.11	$ 62.66

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Stock-Based Compensation (Schedule of Share-based Compensation, Restricted Stock Unit Activity) (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Restricted Stock Units, Nonvested, Number of Shares [Roll Forward]
Non-vested, Period Start	210,827	137,596
Granted	187,450	145,440
Vested	(35,882)	(60,915)
Forfeited	(43,970)	(11,294)
Non-vested, Period End	318,425	210,827
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Non-vested, Weighted Average Fair Value, Period Start	$ 55.31	$ 45.11
Granted, Weighted Average Fair Value	68.29	59.43
Vested, Weighted Average Fair Value	51.80	42.75
Forfeited, Weighted Average Fair Value	63.59	51.88
Non-vested, Weighted Average Fair Value, Period End	$ 62.21	$ 55.31