Stock-Based Compensation

6 Months Ended

Jun. 30, 2015

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

For the three months ended June 30, 2014 and 2015, we recognized stock-based compensation expense of $2.2 million and $1.1 million, respectively. Substantially all of the expense, $1.6 million and $1.0 million, respectively, was recorded as selling and administrative expenses in the Consolidated Statements of Operations, with the remaining expenses recorded as cost of sales and research and development.

For the six months ended June 30, 2014 and 2015, we recognized stock-based compensation expense of $2.8 million and $2.7 million, respectively. Substantially all of the expense, $2.1 million and $2.5 million, respectively, was recorded as selling and administrative expenses in the Consolidated Statements of Operations, with the remaining expenses recorded as cost of sales and research and development.

As of June 30, 2015, the total compensation cost related to non-vested restricted stock, performance shares based on current forecasts, and stock options not yet recognized was $8.4 million, which will be recognized over the remaining weighted average life of 1.68 years.

Restricted Stock and Performance Shares

Restricted stock and performance share awards activity under the plans for the six months ended June 30, 2015 was:



	Number of Shares		Weighted- Average Grant Date Fair Value
Outstanding unvested as of January 1, 2015	1,814,130		$	6.31
Granted	19,969		8.31
Vested	(55,211	)	10.23
Forfeited/canceled/expired	(188,407	)	6.42
Outstanding unvested as of June 30, 2015	1,590,481		6.18

Stock Options

Stock option activity under the plans for the six months ended June 30, 2015 was:



	Number of Shares		Weighted- Average Exercise Price
Outstanding as of January 1, 2015	2,042,074		$	10.93
Forfeited/canceled/expired	(203,592	)	10.77
Outstanding as of June 30, 2015	1,838,482		10.95