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Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid In Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member]	Total
Cumulative effect of adoption of ASU 2016-09		$ 215			$ (215)
Balance at Dec. 31, 2016	$ 127	92,025	$ (14,583)	$ (8,163)	187,508	$ 256,914
Balance (Shares) at Dec. 31, 2016	12,731,678		(351,746)
Net loss					(11,424)	(11,424)
Other comprehensive income				83		83
Restricted stock awards		(2,929)	$ 2,929
Restricted stock awards, shares			71,753
Forfeiture of restricted stock awards		877	$ (877)
Forfeiture of restricted stock awards, shares			(54,675)
Employee stock settlement			$ (19)			(19)
Employee stock settlement, shares			(1,273)
Stock-based compensation recognized		566				566
Cash dividends					(3,351)	(3,351)
Balance at Sep. 30, 2017	$ 127	90,754	$ (12,550)	(8,080)	172,518	242,769
Balance (Shares) at Sep. 30, 2017	12,731,678		(335,941)
Balance at Dec. 31, 2017	$ 127	90,347	$ (12,555)	(7,567)	161,380	231,732
Balance (Shares) at Dec. 31, 2017	12,731,678		(336,982)
Net loss					(14,912)	(14,912)
Other comprehensive income				108		108
Restricted stock awards		(3,141)	$ 3,141
Restricted stock awards, shares			85,182
Forfeiture of restricted stock awards		137	$ (137)
Forfeiture of restricted stock awards, shares			(9,141)
Employee stock settlement			$ (117)			(117)
Employee stock settlement, shares			(7,089)
Stock-based compensation recognized		2,511				2,511
Balance at Sep. 30, 2018	$ 127	$ 89,854	$ (9,668)	$ (7,459)	$ 146,468	$ 219,322
Balance (Shares) at Sep. 30, 2018	12,731,678		(268,030)

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The amount of adjustment to stockholders' equity associated with an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

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Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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Amount of paid and unpaid cash dividends declared for classes of stock, for example, but not limited to, common and preferred.

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