Related Parties - Issuance of Class A Shares (Details) - USD ($) $ in Thousands		3 Months Ended
	Aug. 25, 2016	Mar. 31, 2017
Common Stock
Proceeds from sale of common stock		$ 2,829
Class A common stock
Common Stock
Sale of common stock (in shares)		1,200,000
Proceeds from sale of common stock		$ 2,800
Class A common stock | JVL | Beneficial owner
Common Stock
Sale of common stock (in shares)	17,868,330
Proceeds from sale of common stock	$ 25,000
Underwriting discounts and commissions	$ 1,100
Class A common stock | Minimum | JVL | Beneficial owner
Common Stock
Beneficial ownership interest (as a percent)	5.00%
Ownership percentage (as a percent)	15.00%
Class A common stock | Maximum | Beneficial owner
Common Stock
Ownership percentage (as a percent)	19.90%