Basis of Presentation Cequent Spinoff (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	7 Months Ended	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash distribution received from Cequent spin-off	$ 214,500
Cequent Spin-off, one-time costs		$ 29,000	$ 30,000
Deferred Finance Costs, Net				$ 6,050	$ 7,760
Debt financing and extinguishment costs				$ (1,970)	$ (3,360)	$ (2,460)
Discontinued Operations [Member]
Cequent Spin-off, one-time costs			18,000
Deferred Finance Costs, Net	9,000	9,000	9,000
Continuing Operations [Member]
Cequent Spin-off, one-time costs		3,000
Deferred Finance Costs, Net	$ 1,000	1,000	$ 1,000
Debt financing and extinguishment costs		$ 2,000