Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Schedule of Income tax Benefit from Continuing and Discontinuing Operations

	2016		2015		2014
Income tax benefit from continuing operations	$	5,792	$	2,497	$	11,530
Income tax benefit from discontinued operations		—		—		8,744
Income tax benefit	$	5,792	$	2,497	$	20,274

Income (Loss) From Continuing Operations Before Income Tax From Domestic And Foreign Operations

	2016			2015			2014
Domestic operations	$	(2,295	)	$	(35,996	)	$	(20,823	)
Foreign operations		(11,674	)		27,310			30,011
Total income (loss) from continuing operations before income tax	$	(13,969	)	$	(8,686	)	$	9,188

Benefit For Income Taxes

	2016			2015			2014
Federal:
Current	$	260		$	—		$	(174	)
Deferred		(5,098	)		(2,355	)		(9,531	)
State:
Current		54			115			277
Deferred		(1,153	)		(673	)		(3,577	)
Foreign:
Current		146			416			1,475
Deferred		—			—			—
Total	$	(5,791	)	$	(2,497	)	$	(11,530	)

Income Tax Benefit Reconciliation

	2016			2015			2014
Tax provision at statutory U.S. federal income tax rate	$	(4,889	)	$	(3,040	)	$	3,214
State income tax — net of federal income tax benefit		(1,118	)		(676	)		(2,726	)
Worthless stock deduction		—			—			(9,631	)
Charitable contributions		—			(469	)		(1,764	)
Adjustment to deferred tax depreciation		—			1,135			(1,670	)
Change in deferred state tax rate		(1,082	)		—			(811	)
Research and development tax credits		(253	)		(286	)		(691	)
Purchase price adjustment		—			393			(393	)
Changes in unrecognized tax benefits		10			(186	)		127
Changes in valuation allowance		1,031			270			2,246
Other		510			362			569
Income tax benefit	$	(5,791	)	$	(2,497	)	$	(11,530	)

Reconciliation Of Unrecognized Tax Benefits

	2016		2015			2014
Unrecognized tax benefits — January 1	$	157	$	442		$	253
Gross increases — tax positions in prior period		—		—			—
Gross increases — current period tax positions		—		—			270
Gross decreases — expirations		—		—			(65	)
Gross decreases — tax positions in prior period		—		(285	)		(16	)
Unrecognized tax benefits — December 31,	$	157	$	157		$	442

Deferred Tax Assets (Liabilities)

	2016			2015
Deferred tax assets:
Accrued liabilities	$	16,194		$	17,841
Federal NOLs		17,905			24,687
Foreign NOLs		3,795			3,586
State NOLs		5,989			6,008
Tax credit carryforwards		5,970			5,374
Charitable contribution		1,883			2,233
Valuation allowance		(7,133	)		(6,102	)
Total deferred tax assets		44,603			53,627
Deferred tax liabilities:
Depreciation and amortization		(111,793	)		(126,174	)
Other liabilities		(1,259	)		(1,459	)
Total deferred tax liabilities		(113,052	)		(127,633	)
Net noncurrent deferred tax liabilities	$	(68,449	)	$	(74,006	)