Stock-Based Compensation (Details 1) shares in Thousands	12 Months Ended
	Dec. 31, 2015 $ / shares shares
Number of options (in thousands)
Options outstanding at December 31, 2014 | shares	1,798
Options granted | shares	797
Options exercised | shares	(85)
Options forfeited | shares	(147)
Options outstanding at December 31, 2015 | shares	2,363
Weighted average exercise price
Weighted average exercise price, Options outstanding Beginning Balance | $ / shares	$ 12.47
Weighted average exercise price, Options granted | $ / shares	22.32
Weighted average exercise price, Options exercised | $ / shares	9.32
Weighted average exercise price, Options forfeited | $ / shares	20.55
Weighted average exercise price, Options outstanding Ending Balance | $ / shares	$ 15.40