Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2015

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

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

Equity awards granted during the quarter were as follows:

	September 30, 2015			September 30, 2014
	Number of Shares	Weighted- Average Grant- Date Fair Value		Number of Shares	Weighted- Average Grant- Date Fair Value
Stock options	907,364	$	0.68	116,210	$	2.21
Unvested shares	299,461	$	4.36	55,459	$	6.92
Performance stock units	349,809	$	2.13	22,666	$	6.04