Subsequent Events (Details) - Subsequent Event - USD ($) $ / shares in Units, $ in Millions		1 Months Ended
	Jan. 24, 2017	Jan. 31, 2017
Subordinated Promissory Note
Subsequent events
Repayment of debt		$ 2.0
Secondary Public Offering And Over-Allotment Option
Subsequent events
Issuance of stock (in shares)	7,887,500
Price of stock issued (in dollars per share)	$ 16.75
Proceeds received, net of issuance costs	$ 124.0
Underwriting discounts and commissions	7.6
Other offering expenses	$ 0.5