Redeemable Noncontrolling Interests and Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	9 Months Ended
	Aug. 10, 2015	Sep. 30, 2015	Sep. 30, 2015	Jul. 31, 2015
Minority Interest [Line Items]
Proceeds from issuance initial public offering			$ 221,318
Common stock issuable upon preferred stock conversion	1,667,683
Common shares issuable upon conversion of warrants	1,250,764			1,250,764
Deemed dividend to convertible preferred shareholders		$ 24,890	24,890
Series D and E Preferred Shares
Minority Interest [Line Items]
Deemed dividend to convertible preferred shareholders	$ 24,900		$ 24,900
Initial Public Offering
Minority Interest [Line Items]
Common stock shares issued	17,900,000
Sale of stock, price per share	$ 14.00
Proceeds from issuance initial public offering	$ 221,300
Offering expense	$ 7,500
Investment owned balance shares	417,732
Convertible preferred stock into common stock	54,840,767