Credit Facilities and Long-Term Debt, Deferred Financing Costs (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Deferred Financing Costs [Abstract]
Deferred financing costs	$ 1.1	$ 1.3
Amortization of financing costs reminder of 2017	0.2
2018	0.3
2019	0.3
2020	$ 0.3