Income Tax (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Income Tax Provision (Benefit) on Income from Operations

The income tax provision (benefit) on income from operations consists of the following:

	Years Ended December 31,
	2016			2015			2014
Current:
Federal	$	41,366		$	44,841		$	34,504
State	7,023			6,670			4,827
	48,389			51,511			39,331
Deferred	(28,939		)	(7,956		)	(3,804		)
	$	19,450		$	43,555		$	35,527

Reconciliation of U.S. Statutory Income Tax Rate to Effective Income Tax Expense Rate

Reconciliation of the U.S. statutory income tax rate to our effective income tax expense rate for operations follows:

	Years Ended December 31,
	2016			2015			2014
Federal income tax expense at statutory rate	$	45,257		$	37,949		$	33,064
State income tax, net of federal income tax benefit	4,807			3,715			2,867
Domestic production activities deduction	(3,947		)	(466		)	(1,720		)
Excess tax benefits related to stock option exercises	(29,582		)	—			—
Non-deductible business expenses	2,979			2,414			1,485
Other, net	(64		)	(57		)	(169		)
	$	19,450		$	43,555		$	35,527

Schedule of Deferred Tax Assets and Liabilities

The tax effects of the major items recorded as deferred tax assets and liabilities as of December 31 are:

	2016			2015
Deferred income tax assets:
Operating expenses not currently deductible	$	18,721		$	9,953
Stock option and other employee benefit plans	19,665			13,504
Capital loss and credit carryforward	—			179
Total deferred income tax assets	38,386			23,636
Deferred income tax liabilities:
Intangible assets	(103,754		)	(111,653		)
Property and equipment	(3,207		)	(2,781		)
Other	(204		)	(228		)
Total deferred income tax liabilities	(107,165		)	(114,662		)
Net deferred income tax liabilities	$	(68,779	)	$	(91,026	)