Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Schedule of Income Before (Benefit) Provision For Income Taxes

Income before (benefit) provision for income taxes consisted of the following:

(in thousands)	Year Ended December 31,
	2018			2017			2016
U.S.	$	104,881		$	83,525		$	67,199
Foreign		(186	)		(73	)		(268	)
	$	104,695		$	83,452		$	66,931

(Benefit) Provision for Income Taxes

The (benefit) provision for income taxes consisted of the following:

(in thousands)	Year Ended December 31,
	2018		2017			2016
Current:
U.S. Federal	$	7,270	$	21,171		$	17,203
State		4,253		2,976			2,049
Foreign		1,731		2,016			1,683
		13,254		26,163			20,935
Deferred:
U.S. Federal		10,355		(103,518	)		4,005
State		1,637		6,948			3,039
Foreign		43		(61	)		701
		12,035		(96,631	)		7,745
Total	$	25,289	$	(70,468	)	$	28,680

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,
	2018			2017			2016
U.S. federal statutory rate		21.0	%		35.0	%		35.0	%
State taxes, net of federal benefit		5.0			4.1			4.2
State deferred tax rate change, net of federal benefit		0.7			0.5			2.0
Valuation allowance		(0.5	)		0.1			1.1
Share-based compensation		(1.9	)		(1.0	)		—
Enactment of the Tax Cuts and Jobs Act		(0.1	)		(122.9	)		—
Other		0.0			(0.2	)		0.6
		24.2	%		(84.4	)%		42.9	%

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,
	2018		2017
Deferred tax liabilities:
Accelerated depreciation	$	208,539	$	195,694
Prepaid costs currently deductible		4,845		4,152
Other		4,703		4,405
Total deferred tax liabilities		218,087		204,251
Deferred tax assets:
Accrued costs not yet deductible		7,796		7,880
Allowance for doubtful accounts		486		484
Deferred revenues		1,774		213
Share-based compensation		1,367		1,045
Total deferred tax assets, net of valuation allowance of $0.2 million in 2018 and $0.8 million in 2017		11,423		9,622
Deferred income taxes, net	$	206,664	$	194,629