Equity Instruments and Stock Based Compensation (Details 2) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Options Outstanding, Beginning Balance | shares	2,498
Number of Stock Option, Granted | shares	934
Number of Stock Option, Exercised | shares	(708)
Number of Stock Option, Forfeited | shares	(398)
Number of Stock Option Outstanding - Ending Balance | shares	2,326
Number of Stock Option, Exercisable | shares	798
Weighted Average Exercise Price - Beginning Balance | $ / shares	$ 11.45
Weighted Average Exercise Price, Granted | $ / shares	16.71
Weighted Average Exercise Price, Exercised | $ / shares	8.75
Weighted Average Exercise Price, Forfeited | $ / shares	14.59
Weighted Average Exercise Price, Ending Balance | $ / shares	13.84
Weighted Average Exercise Price, Exercisable | $ / shares	$ 10.80
Weighted Average Remaining Contractual Life, Balance	8 years 3 months 4 days
Weighted Average Remaining Contractual Life, Excercisable	6 years 1 month 13 days
Aggregate Intrinsic Value | $	$ 6,426
Aggregate Intrinsic Value | $	$ 4,880