Net Income (Loss) Per Share Attributable to Common Stockholders (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Basic EPS:
Net income (loss) attributable to common stockholders	$ 422	$ (19,789)	$ (13,493)
Weighted-average common shares outstanding	42,067	29,921	11,540
Weighted-average unvested restricted shares	(1,677)	(1,704)	(52)
Weighted-average escrow shares	(727)	0	0
Weighted-average common shares outstanding used to compute net income (loss) per share attributable to common stockholders	39,663	28,217	11,488
Basic net income (loss) per share attributable to common stockholders	$ 0.01	$ (0.70)	$ (1.17)
Diluted EPS:
Net income (loss) attributable to common stockholders	$ 422	$ (19,789)	$ (13,493)
Weighted-average common shares used in basic EPS	39,663	28,217	11,488
Dilutive effect of weighted-average escrow shares (in shares)	591	0	0
Dilutive effect of weighted-average contingent shares (in shares)	748	0	0
Weighted-average shares used to compute diluted net income (loss) per share attributable to common stockholders (in shares)	44,495	28,217	11,488
Diluted net income (loss) per share attributable to common stockholders (in shares)	$ 0.01	$ (0.70)	$ (1.17)
Stock Option
Diluted EPS:
Dilutive effect of weighted-average share-based compensation (in shares)	2,510	0	0
Restricted Stock Awards
Diluted EPS:
Dilutive effect of weighted-average share-based compensation (in shares)	532	0	0
Restricted Stock Units (RSUs)
Diluted EPS:
Dilutive effect of weighted-average share-based compensation (in shares)	426	0	0
ESPP
Diluted EPS:
Dilutive effect of weighted-average share-based compensation (in shares)	25	0	0