Stock-Based Compensation and Expense (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) $ / shares shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Options Beginning Balance | shares	2,602,375
Options, Granted | shares	614,325
Options, Exercised | shares	(262,183)
Options, Cancelled/Forfeited | shares	(72,620)
Options Outstanding Ending Balance | shares	2,881,897
Options, Exercisable at December 31, 2015 | shares	1,585,133
Options, Vested and Expected to Vest at December 31, 2015 | shares	2,772,410
Weighted Average Exercise Price, Beginning Balance | $ / shares	$ 1.49
Weighted Average Exercise Price, Granted | $ / shares	3.58
Weighted Average Exercise Price, Exercised | $ / shares	1.43
Weighted Average Exercise Price, Cancelled/Forfeited | $ / shares	1.50
Weighted Average Exercise Price, Ending Balance | $ / shares	1.93
Weighted Average Exercise Price, Exercisable at December 31, 2015 | $ / shares	1.54
Weighted Average Exercise Price, Vested and Expected to Vest at December 31, 2015 | $ / shares	$ 1.88
Average Remaining Contractual Term, Outstanding	6 years 3 months 18 days
Average Remaining Contractual Term, Exercisable at December 31, 2015	5 years 4 months 24 days
Average Remaining Contractual Term, Vested and Expected to Vest at December 31,2015	6 years 2 months 12 days
Aggregate Intrinsic Value, Outstanding Balance | $	$ 8,425
Aggregate Intrinsic Value, Exercisable at December 31, 2015 | $	5,245
Aggregate Intrinsic Value, Vested and Expected to Vest at December 31, 2015 | $	$ 8,242