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Stock-Based Compensation | 3 Months Ended
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Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-Based Compensation | Stock-Based Compensation For the three months ended March 31, 2014 and 2015, we recognized stock-based compensation expense of $0.5 million and $1.6 million, respectively. Substantially all of the expense, $0.5 million and $1.5 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 March 31, 2015, the total compensation cost related to non-vested restricted stock, performance shares based on current forecasts, and stock options not yet recognized was $10.6 million, which will be recognized over the remaining weighted average life of 1.75 years. Restricted Stock and Performance Shares Restricted stock and performance share awards activity under the plans for the three months ended March 31, 2015 was:
| Number of Shares |  | Weighted- Average Grant Date Fair Value
Outstanding unvested as of January 1, 2015 | 1,814,130 |  |  | $ | 6.31 |
Granted | 3,000 |  |  | 4.02 |
Vested | (44,922 | ) |  | 9.90 |
Forfeited/canceled/expired | (41,836 | ) |  | 6.68 |
Outstanding unvested as of March 31, 2015 | 1,730,372 |  |  | 6.20 |
Stock Options Stock option activity under the plans for the three months ended March 31, 2015 was:
| Number of Shares |  | Weighted- Average Exercise Price
Outstanding as of January 1, 2015 | 2,042,074 |  |  | $ | 10.93 |
Forfeited/canceled/expired | (61,468 | ) |  | 16.14 |
Outstanding as of March 31, 2015 | 1,980,606 |  |  | 10.77 |

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51659978&loc=d3e25284-112666 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 + Details
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