Description of Business (Details) $ / shares in Units, $ in Millions		1 Months Ended	12 Months Ended
	Jun. 19, 2015	Jul. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2015 segment $ / shares shares
Number of operating segment | segment			1
Stock split conversion	0.6135
Common stock
Initial public offering (in shares) | shares			10,900,000
Initial public offering price (in dollars per share) | $ / shares			$ 11.57
IPO | Common stock
Initial public offering (in shares) | shares		10,900,000
Initial public offering price (in dollars per share) | $ / shares		$ 18.00
Proceeds from initial public offering, net of offering costs | $		$ 178.5