Background (Details) - USD ($)	Mar. 03, 2016	Feb. 17, 2016
Class B-1 Preferred Stock
Initial Public Offering
Shares converted (in shares)		3,278,938
Class B-2 Preferred Stock
Initial Public Offering
Shares converted (in shares)		326,557
Class C Preferred Stock
Initial Public Offering
Shares converted (in shares)		2,365,020
Class D Preferred Stock
Initial Public Offering
Shares converted (in shares)		3,105,000
Common Stock | IPO
Initial Public Offering
Shares issued (in shares)		4,750,000
Share price (in dollars per share)		$ 20.00
Net proceeds		$ 88,350,000
Common Stock | Over-Allotment Option
Initial Public Offering
Shares issued (in shares)	527,941
Share price (in dollars per share)	$ 20.00
Net proceeds	$ 9,800,000