CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common stock	Treasury Stock	Additional paid-in capital	Accumulated other comprehensive income (loss)	Accumulated deficit
Equity, beginning balance (in shares) at Dec. 31, 2016		19,892,000
Equity, beginning balance at Dec. 31, 2016	$ 66,481	$ 2	$ (5,728)	$ 151,696	$ (52)	$ (79,437)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	852			852
Shares issued under stock incentive plans, net of shares withheld for employee taxes (in shares)		168,000
Shares issued under stock incentive plans, net of shares withheld for employee taxes	(190)			(190)
Dividends paid	(4,195)			(4,195)
Net income (loss)	(35,730)
Unrealized gain on securities available-for-sale	17				17
Reclassification of other-than-temporary losses on available-for-sale securities included in net income	52				52
Provision for income taxes	(22)				22
Cumulative effect of change in accounting principle	534					534
Reclassification of other-than-temporary losses on available-for-sale securities included in net (loss) income	$ 52
Equity, ending balance (shares) at Dec. 31, 2017	20,060,311	20,060,000
Equity, ending balance at Dec. 31, 2017	$ 27,799	$ 2	(5,728)	148,163	(5)	(114,633)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	634			634
Shares issued under stock incentive plans, net of shares withheld for employee taxes (in shares)		190,000
Shares issued under stock incentive plans, net of shares withheld for employee taxes	(48)			(48)
Dividends paid	(3,321)			(3,321)
Net income (loss)	736
Provision for income taxes	0
Reclassification of other-than-temporary losses on available-for-sale securities included in net (loss) income	$ 0				(17)	17
Equity, ending balance (shares) at Dec. 31, 2018	20,249,786	20,250,000
Equity, ending balance at Dec. 31, 2018	$ 25,800	$ 2	$ (5,728)	$ 145,428	$ (22)	$ (113,880)