Equity - Distributions (Details) - USD ($) $ / shares in Units, $ in Thousands	Feb. 14, 2019	Jan. 22, 2019	Nov. 14, 2018	Oct. 23, 2018	Aug. 14, 2018	Jul. 24, 2018	May 15, 2018	Apr. 24, 2018
Distributions
Amount Per Unit (in dollars per unit)				$ 0.3900		$ 0.3900		$ 0.3900
Amount Paid/Payable to Limited Partners			$ 48,260		$ 47,600		$ 47,374
Amount Paid/Payable to General Partner			83		82		82
Subsequent Event
Distributions
Amount Per Unit (in dollars per unit)		$ 0.3900
Amount Paid/Payable to Limited Partners	$ 48,373
Amount Paid/Payable to General Partner	83
Oaktree Capital Management L.P. | Class A Convertible Preferred Units
Distributions
Dividends, Preferred Stock, Cash			$ 6,449		$ 6,449		$ 6,449
Oaktree Capital Management L.P. | Class A Convertible Preferred Units | Subsequent Event
Distributions
Dividends, Preferred Stock, Cash	$ 6,449