Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Schedule of Components of Income Taxes

The provision for income taxes consists of the following (in thousands):

	Year Ended December 31,
	2016			2015			2014
Current:
Federal	$	38,103		$	31,295		$	28,581
State	6,685			5,837			5,060
Foreign	2,672			2,048			2,181
	47,460			39,180			35,822
Deferred:
Federal and State	13,169			11,520			15,991
Foreign	(426		)	(209		)	(256		)
	12,743			11,311			15,735
	$	60,203		$	50,491		$	51,557

Income (Loss) before Income Tax Provision

Income from continuing operations before income taxes consists of the following (in thousands):

	Year Ended December 31,
	2016		2015		2014
United States	$	148,402	$	116,011	$	122,496
Foreign	8,997		5,902		2,556
	$	157,399	$	121,913	$	125,052

Schedule of Deferred Tax Assets and Liabilities

The components of deferred tax assets (liabilities) are as follows (in thousands):

	December 31,
	2016			2015
Intangibles	$	(88,832	)	$	(70,588	)
Depreciation expense	(14,383		)	(14,369		)
Allowance for doubtful accounts	3,185			2,607
Employee-related accruals	10,156			7,573
Workers’ compensation loss reserves	757			720
Stock-based compensation	9,300			7,354
Other	5,482			5,061
Net operating loss carryforwards	1,262			1,147
Valuation allowance	(1,209		)	(1,044		)
	$	(74,282	)	$	(61,539	)

Schedule of Effective Income Tax Rate Reconciliation

The reconciliation between the amount computed by applying the U.S. federal statutory tax rate of 35.0 percent to income before income taxes and the income tax provision is as follows (in thousands):

	Year Ended December 31,
	2016			2015		2014
Income tax provision at the statutory rate	$	55,089		$	42,669	$	43,768
State income taxes, net of federal benefit	4,873			4,559		4,674
Disallowed meals and entertainment expenses	1,814			1,718		1,608
Other	(1,573		)	1,545		1,507
	$	60,203		$	50,491	$	51,557

Schedule of Unrecognized Tax Benefits Roll Forward

The following is a reconciliation of the total amounts of unrecognized tax benefits (in thousands):

	Year Ended December 31,
	2016		2015			2014
Unrecognized tax benefit beginning of year	$	814	$	848		$	979
Gross increases - tax positions in prior year	479		—			126
Gross decreases - tax positions in prior year	—		(34		)	—
Lapse of the statute of limitations	—		—			(131		)
Discontinued operations	—		—			(126		)
Unrecognized tax benefit end of year	$	1,293	$	814		$	848