Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Income Before Income Taxes

The domestic and foreign components of income before provision for income taxes are as follows for the years ended December 31:

	2017		2016		2015
Domestic	$	69,347	$	69,159	$	54,150
Foreign		4,639		5,348		9,450
Income before income taxes	$	73,986	$	74,507	$	63,600

Income Tax Expense Components

Income tax expense consisted of the following for the years ended December 31:

	2017			2016			2015
Current:
Federal	$	12,995		$	12,979		$	14,797
State		3,243			3,514			2,669
Foreign		1,476			1,932			1,475
Total current		17,714			18,425			18,941
Deferred:
Federal		(9,425	)		8,872			4,562
State		2,749			1,222			512
Foreign		72			(596	)		216
Total deferred		(6,604	)		9,498			5,290
Income tax expense	$	11,110		$	27,923		$	24,231

Deferred Tax Assets (Liabilities)

Deferred tax assets (liabilities) consisted of the following at December 31:

	2017			2016
Deferred Tax Assets
Allowance for bad debt	$	1,003		$	1,008
Accrued paid time off		1,624			2,592
Accrued bonus		—			55
Foreign net operating loss (NOL) carry forward		1,301			1,371
Federal/state net operating loss (NOL) carry forward		507			3,010
Stock option compensation		2,726			4,292
Deferred rent		3,355			5,423
Deferred compensation		3,238			3,662
Foreign tax credits		505			2,631
State tax credits		1,785			1,784
Federal tax credits		—			225
Foreign exchange		2,051			5,349
Accrued liabilities and other		3,272			3,378
		21,367			34,780
Less: Valuation Allowance		(1,636	)		(1,131	)
Total Deferred Tax Assets		19,731			33,649
Deferred Tax Liabilities
Retention		(1,375	)		(1,684	)
Prepaid expenses		(1,045	)		(1,654	)
Payroll taxes		(489	)		(617	)
Unbilled revenue		(5,407	)		(8,728	)
Depreciation		(4,773	)		(6,664	)
Amortization		(39,993	)		(51,842	)
Deferred gain and other		—			(1,574	)
Total Deferred Tax Liabilities		(53,082	)		(72,763	)
Total Net Deferred Tax Liability	$	(33,351	)	$	(39,114	)

Unrecognized Tax Benefit Reconciliation

The unrecognized tax benefit reconciliation, excluding penalty and interest, is as follows:

Unrecognized tax benefits at January 1, 2015	$	702
Decrease attributable to settlements		(174	)
Increase attributable to tax positions taken during a prior period		12
Decrease attributable to lapse of statute of limitations		(140	)
Unrecognized tax benefits at December 31, 2015	400
Increase attributable to tax positions taken during a prior period		925
Decrease attributable to lapse of statute of limitations		(140	)
Unrecognized tax benefits at December 31, 2016		1,185
Decrease attributable to lapse of statute of limitations		(365	)
Unrecognized tax benefits at December 31, 2017	$	820

Effective Income Tax Rate Reconciliation

The Company’s provision for income taxes differs from the federal statutory rate. The differences between the statutory rate and the Company’s provision are as follows:

	2017			2016			2015
Taxes at statutory rate		35.0	%		35.0	%		35.0	%
State taxes, net of federal benefit		4.4	%		3.9	%		3.9	%
Foreign tax rate differential		(0.3	)%		(0.1	)%		(0.3	)%
Tax legislation		(22.6	)%		—			—
Other permanent differences		0.7	%		0.8	%		1.9	%
Prior year tax adjustments		(0.3	)%		(1.0	)%		(1.9	)%
Unrecognized tax benefits		0.1	%		1.0	%		—
Valuation allowance		0.7	%		(0.3	)%		—
Equity-based compensation		(2.1	)%		(1.0	)%		—
Tax credits		(0.6	)%		(0.8	)%		(0.5	)%
Taxes at effective rate		15.0	%		37.5	%		38.1	%