Consolidated Statement of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Accumulated Deficit	Accumulated Other Comprehensive Income (loss)
Common Stock, Shares, Issued at Dec. 31, 2012		28,471,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2012	$ 125,442	$ 303,724	$ (179,686)	$ 1,404
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued pursuant to benefit plans, shares		424,000
Shares issued pursuant to benefit plans	806	$ 806
Stock based compensation associated with employee benefit plans	5,298	$ 5,298
Vesting of restricted stock units, shares		417,000
Restricted share forfeitures for tax settlements, shares		(114,000)
Restricted share forfeitures for tax settlements	(458)	$ (458)
Net adjustment for fair value of hedge derivatives, net of taxes	(110)			(110)
Translation adjustments	(438)			(438)
Net income (loss)	(49,404)			0
Common Stock, Shares, Issued at Dec. 31, 2013		29,198,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2013	81,136	$ 309,370	(229,090)	856
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued pursuant to benefit plans, shares		281,000
Shares issued pursuant to benefit plans	635	$ 635
Stock based compensation associated with employee benefit plans	4,097	$ 4,097
Vesting of restricted stock units, shares		709,000
Restricted share forfeitures for tax settlements, shares		(211,000)
Restricted share forfeitures for tax settlements	(629)	$ (629)
Net adjustment for fair value of hedge derivatives, net of taxes	123			123
Translation adjustments	(556)			(556)
Issuance of common stock		6,555,000
Issuance of common stock	20,551	$ 20,551
Net income (loss)	$ (27,581)
Common Stock, Shares, Issued at Dec. 31, 2014	28,471,000	36,532,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2014	$ 77,776	$ 334,024	(256,671)	423
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued pursuant to benefit plans, shares	319,000	205,000
Shares issued pursuant to benefit plans	$ 331	$ 331
Stock based compensation associated with employee benefit plans	3,952	$ 3,952
Vesting of restricted stock units, shares		279,000
Restricted share forfeitures for tax settlements, shares		(57,000)
Restricted share forfeitures for tax settlements	(142)	$ (142)
Net adjustment for fair value of hedge derivatives, net of taxes	(67)			(67)
Translation adjustments	(1,255)			(1,255)
Net income (loss)	$ (14,678)
Common Stock, Shares, Issued at Dec. 31, 2015	29,198,000	36,959,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2015	$ 65,917	$ 338,165	$ (271,349)	$ (899)