Employee Benefit Plans Stock Compensation (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Stock Options, Activity

The following table summarizes stock option activity for 2014 (in thousands, except average prices and weighted average remaining contractual lives):

	Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Balance, December 31, 2013	3,465		$	5.15	4.65	$	211
Granted	445		3.32
Exercised	(63	)	1.79
Forfeited	(583	)	3.38
Expired	(423	)	7.52
Balance, December 31, 2014	2,841		$	4.95	4.40	$	43
Options exercisable at December 31, 2014	1,742		$	5.93	3.74	$	42
Options vested as of December 31, 2014 and expected to vest after December 31, 2014	2,783		$	4.98	4.37	$	43

Schedule of Nonvested Share Activity

The following table summarizes nonvested stock activity for 2014:

	Restricted Stock Units				LTIP and Overlay Awards
	Restricted Shares		Weighted Average Fair Value		Restricted Shares		Weighted Average Fair Value
Balance, December 31, 2013	335		$	4.73	796		$	5.00
Granted	102		3.51		172		3.46
Vested	(231	)	4.84		(478	)	3.62
Forfeited	(78	)	4.63		(250	)	3.65
Balance, December 31, 2014	128		$	3.78	240		$	3.55

Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity

The following table summarizes shares issued under the ESPP (in thousands, except per share amounts):

	Year Ended December 31,
	2014		2013		2012
Shares issued pursuant to the ESPP	242		381		352
Cash received for the purchase of shares pursuant to the ESPP	$	514	$	767	$	1,225
Weighted average purchase price per share	$	2.12	$	2.01	$	3.48

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The fair value calculations for stock options and ESPP shares used the following assumptions for the years ended December 31:

	Stock Options									Employee Stock Purchase Plan
	2014			2013			2012			2014			2013			2012
Estimated fair value	$	0.90		$	3.45		$	2.10		$	0.95		$	1.79		$	2.05
Expected life (in years)	4.4			4.5			4.5			1.5			1.5			1.5
Interest rate	1.46		%	1.33		%	0.65		%	0.13		%	0.15		%	0.18		%
Volatility	52		%	57		%	71		%	53		%	52		%	53		%
Dividend yield	—			—			—			—			—			—

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

For the years ended December 31, 2014, 2013 and 2012, stock-based compensation was recognized and allocated in the Consolidated Statements of Operations as follows (in thousands):

	2014		2013		2012
Cost of sales	$	386	$	550	$	25
Research and development	818		1,170		601
Selling, general and administrative	2,893		3,578		765
Total stock-based compensation expense	$	4,097	$	5,298	$	1,391