Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

Income before income taxes by geographic area was, for the years ended December 31:

(in thousands)	2017			2016			2015
Federal	$	33,830		$	39,419		$	45,456
Foreign		(9,190	)		(1,074	)		(1,157	)
	$	24,640		$	38,345		$	44,299

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The income tax provision consisted of the following for the years ended December 31:

(in thousands)	2017			2016		2015
Current
Federal	$	7,020		$	9,838	$	12,433
State		1,557			2,871		3,006
		8,577			12,709		15,439
Deferred
Federal		(1,453	)		2,491		1,553
Foreign		(875	)		481		(272	)
State		(2,763	)		1,233		277
		(5,091	)		4,205		1,558
Income tax expense	$	3,486		$	16,914	$	16,997

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The differences between the U.S. federal statutory tax rate and the Company’s effective tax rate for continuing operations were as follows for the years ended December 31:

	2017			2016			2015
U.S federal statutory rate		35.0	%		35.0	%		35.0	%
Deferred balance adjustments due to Tax Act, net		(31.6	)		—			—
State income taxes, net of U.S. federal income tax expense		5.3			5.2			4.6
Change in valuation allowance		6.4			1.6			—
Domestic production/manufacturing deduction		(1.6	)		(1.9	)		(2.4	)
Tax differential on foreign earnings		3.2			0.6			0.3
Deferred state tax adjustments, net		(2.4	)		1.6			—
Non-deductible meals and entertainment		1.7			1.0			0.6
Stock compensation excess tax benefits		(3.1	)		—			—
Uncertain tax positions		2.0			—			(0.4	)
Provision to return adjustments, net		(0.3	)		0.8			0.5
Other income, net		(0.5	)		0.2			0.2
Effective rate		14.1	%		44.1	%		38.4	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

The net deferred tax assets and (liabilities) arising from temporary differences was as follows at December 31:

(in thousands)	2017			2016
Deferred income tax assets:
Self insurance reserves	$	4,555		$	6,670
Contract loss reserves		317			257
Stock-based awards		1,571			2,554
Bonus		590			2,908
Non-U.S. operating loss		2,173			595
Non-U.S. deferred income tax assets, net		773			—
Other		1,359			1,652
Total deferred income tax assets before valuation allowances		11,338			14,636
Less: valuation allowances		(2,173	)		(595	)
Total deferred income tax assets		9,165			14,041
Deferred income tax liabilities:
Property and equipment – tax over book depreciation		(18,792	)		(26,664	)
Intangible assets – tax over book amortization		(2,186	)		(3,592	)
Non-U.S. deferred income tax liabilities, net		—			(91	)
Other		(1,639	)		(2,259	)
Total deferred income tax liabilities		(22,617	)		(32,606	)
Net deferred income taxes	$	(13,452	)	$	(18,565	)

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

The following is a reconciliation of the beginning and ending liability for unrecognized tax benefits at December 31:

(in thousands)	2017			2016
Balance at beginning of period	$	301		$	425
Gross increases in current period tax positions		67			100
Gross increases in prior period tax positions		441			—
Reductions in tax positions due to lapse of statutory limitations		(22	)		(12	)
Settlements with taxing authorities		—			(243	)
Balance at end of period		787			270
Accrued interest and penalties at end of period		—			31
Total liability for unrecognized tax benefits	$	787		$	301