Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Schedule of Income Before Provision For Income Taxes

Income before provision for income taxes consisted of the following:

(in thousands)	Year Ended December 31,
	2016			2015			2014
U.S.	$	67,199		$	66,889		$	76,848
Foreign		(268	)		(512	)		(287	)
	$	66,931		$	66,377		$	76,561

Provision for Income Taxes

The provision for income taxes consisted of the following:

(in thousands)	Year Ended December 31,
	2016		2015			2014
Current:
U.S. Federal	$	17,203	$	7,976		$	7,494
State		2,049		1,851			2,139
Foreign		1,683		1,645			1,572
		20,935		11,472			11,205
Deferred:
U.S. Federal		4,005		13,201			17,986
State		3,039		1,538			1,927
Foreign		701		(304	)		(266	)
		7,745		14,435			19,647
Total	$	28,680	$	25,907		$	30,852

Reconciliation of U.S. Federal Statutory Tax Rate to Company's Effective Tax Rate

The reconciliation of the U.S. federal statutory tax rate to the Company’s effective tax rate is as follows:

	Year Ended December 31,
	2016			2015			2014
U.S. federal statutory rate		35.0	%		35.0	%		35.0	%
State taxes, net of federal benefit		4.2			4.2			4.1
State deferred tax rate change, net of federal benefit		2.0			(0.4	)		0.1
Valuation allowance		1.1			—			—
Other		0.6			0.2			1.1
		42.9	%		39.0	%		40.3	%

Deferred Income Taxes Related to Temporary Differences between Tax Bases of Assets and Liabilities

The following table shows the deferred income taxes related to the temporary differences between the tax bases of assets and liabilities and the respective amounts included in “Deferred income taxes, net” on the Company’s Consolidated Balance Sheets:

(in thousands)	December 31,
	2016		2015
Deferred tax liabilities:
Accelerated depreciation	$	293,141	$	286,618
Prepaid costs currently deductible		6,572		6,997
Other		5,747		5,034
Total deferred tax liabilities		305,460		298,649
Deferred tax assets:
Accrued costs not yet deductible		9,785		8,638
Allowance for doubtful accounts		809		804
Net operating loss carry forwards		—		577
Deferred revenues		965		1,945
Share-based compensation		1,882		3,334
Total deferred tax assets, net of valuation allowance of $0.7 million in 2016		13,441		15,298
Deferred income taxes, net	$	292,019	$	283,351