CONSOLIDATED STATEMENTS OF STOCKOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance at Feb. 09, 2015	$ 5,285	$ 245	$ 45,097	$ (47,166)	$ 8,585	$ (1,476)
Balance (in shares) at Feb. 09, 2015		24,473		(4,457)
Net loss available to common stockholders	(362)	$ 0	0	$ 0	(362)	0
Stock-based compensation expense	278	0	278	0	0	0
Balance at Feb. 28, 2015	5,201	$ 245	45,375	$ (47,166)	8,223	(1,476)
Balance (in shares) at Feb. 28, 2015		24,473		(4,457)
Net loss available to common stockholders	(6,561)	$ 0	0	$ 0	(6,561)	0
Stock-based compensation expense	528	0	528	0	0	0
Sale of common stock, net	29,558	$ 50	29,508	$ 0	0	0
Sale of common stock, net (in shares)		5,000		0
Settlement of stock awards	(1,943)	$ 5	0	$ (1,948)	0	0
Settlement of stock awards (in shares)		506		(281)
Reclassification of stock-based compensation to liability	(2,516)	$ 0	(2,516)	$ 0	0	0
Reclassification of liability related to stock-based compensation to equity	1,560	0	1,560	0	0	0
Unrealized loss on pension liability	(861)	0	0	0	0	(861)
Balance at Dec. 31, 2015	24,966	$ 300	74,455	$ (49,114)	1,662	(2,337)
Balance (in shares) at Dec. 31, 2015		29,979		(4,738)
Net loss available to common stockholders	(7,436)	$ 0	0	$ 0	(7,436)	0
Stock-based compensation expense	7,806	0	7,806	0	0	0
Sale of common stock, net	880	$ 1	879	$ 0	0	0
Sale of common stock, net (in shares)		120		0
Settlement of stock awards	(1,966)	$ 6	0	$ (1,972)	0	0
Settlement of stock awards (in shares)		581		(278)
Unrealized loss on pension liability	(824)	$ 0	0	$ 0	0	(824)
Balance at Dec. 31, 2016	28,025	$ 307	87,521	$ (51,086)	(5,556)	(3,161)
Balance (in shares) at Dec. 31, 2016		30,680		(5,016)
Cumulative change in accounting principle (Note 2)	$ 4,599	$ 0	$ 4,381	$ 0	$ 218	$ 0