Consolidated Statement of Changes in Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total		Common Stock	Accumulated Deficit	Accumulated Other Comprehensive Income
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2011	$ 166,733		$ 301,225	$ (136,212)	$ 1,720
Common Stock, Shares, Issued at Dec. 31, 2011			27,949,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued pursuant to benefit plans, shares			384,000
Shares issued pursuant to benefit plans	1,272		1,272	0	0
Stock based compensation associated with employee benefit plans	1,391		1,391	0	0
Vesting of restricted stock units, shares			176,000
Vesting of restricted stock units	0		0	0	0
Restricted share forfeitures for tax settlements, shares			(38,000)
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures	164		164	0	0
Net adjustment for fair value of hedge derivatives, net of taxes	9		0	0	9
Translation adjustments	(325)		0	0	(325)
Net income (loss)	(43,474)	[1]	0		0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2012	125,442		303,724	(179,686)	1,404
Common Stock, Shares, Issued at Dec. 31, 2012			28,471,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued pursuant to benefit plans, shares			424,000
Shares issued pursuant to benefit plans	806		806	0	0
Stock based compensation associated with employee benefit plans	5,298		5,298	0	0
Vesting of restricted stock units, shares			417,000
Vesting of restricted stock units	0		0	0	0
Restricted share forfeitures for tax settlements, shares			(114,000)
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures	458		458	0	0
Net adjustment for fair value of hedge derivatives, net of taxes	(110)		0	0	(110)
Translation adjustments	(438)		0	0	(438)
Net income (loss)	(49,404)		0		0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2013	81,136		309,370	(229,090)	856
Common Stock, Shares, Issued at Dec. 31, 2013	28,471,000		29,198,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued pursuant to benefit plans, shares	319,000		281,000
Shares issued pursuant to benefit plans	635		635	0	0
Stock based compensation associated with employee benefit plans	4,097		4,097	0	0
Vesting of restricted stock units, shares			709,000
Vesting of restricted stock units	0		0	0	0
Restricted share forfeitures for tax settlements, shares			(211,000)
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures	629		629	0	0
Net adjustment for fair value of hedge derivatives, net of taxes	123		0	0	123
Translation adjustments	(556)		0	0	(556)
Stock Issued During Period, Shares, New Issues			6,555,000
Proceeds from Issuance of Common Stock	20,551		20,551
Net income (loss)	(27,581)		0		0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2014	$ 77,776		$ 334,024	$ (256,671)	$ 423
Common Stock, Shares, Issued at Dec. 31, 2014	29,198,000		36,532,000

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