Summary of Significant Accounting Policies (Deferred Financing Costs, Net of Accumulated Amortization) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Deferred financing costs	$ 7,131	$ 7,128
Accumulated amortization	(1,016)	(145)
Deferred financing costs, net	6,115	6,983
Fixed debt arrangements
Deferred financing costs	12,813	12,779
Accumulated amortization	(3,604)	(2,660)
Deferred financing costs, net	$ 9,209	$ 10,119