Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2016

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

Schedule of stock options granted and weighted-average grant-date fair value

The following table summarizes all stock option activity for the nine months ended September 30, 2016:

	Number of Shares		Weighted- Average Grant- Date Fair Value		Weighted Average Remaining Contractual Term(Years)
Balance as of December 31, 2015	4,602,746		$	8.74
Granted	150,371		2.61
Exercised	—		—
Forfeited	(342,533	)	7.49
Vested options expired	(366,947	)	17.73
Balance as of September 30, 2016	4,043,637		7.80		5.67
Exercisable as of September 30, 2016	2,784,573		$	9.45	3.73

Schedule of unvested shares granted and weighted-average grant-date fair value

The following table summarizes all unvested share activity for the nine months ended September 30, 2016:

	Number of Shares		Weighted- Average Grant- Date Fair Value
Balance as of December 31, 2015	962,446		$	6.57
Granted	741,954		2.63
Vested	(355,061	)	6.76
Forfeited	(138,360	)	7.67
Unvested shares outstanding at September 30, 2016	1,210,979		$	3.97

Schedule of performance shares granted and weighted-average grant-date fair value

The following table summarizes all cash performance stock unit activity for the nine months ended September 30, 2016:

	Number of Shares	Weighted- Average Grant- Date Fair Value
Balance as of December 31, 2015	—	$	—
Granted	512,127	2.69
Settled	—	—
Forfeited	—	—
Cash performance stock units outstanding at September 30, 2016	512,127	$	2.69

The following table summarizes all performance stock unit activity for the nine months ended September 30, 2016:

	Number of Shares		Weighted-Average Grant-Date Fair Value
Balance as of December 31, 2015	701,384		$	4.51
Granted	473,000		1.90
Settled	—		—
Forfeited	(197,647	)	6.88
Performance stock units outstanding at September 30, 2016	976,737		$	2.76

Schedule of phantom shares granted and weighted-average grant-date fair value

The following table summarizes all phantom stock activity for the nine months ended September 30, 2016:

	Number of Shares		Weighted- Average Grant- Date Fair Value
Balance as of December 31, 2015	—		$	—
Granted	781,645		2.69
Exercised	—		—
Forfeited	(57,617	)	2.69
Phantom stock units outstanding at September 30, 2016	724,028		$	2.69