Debt Obligations, Luxembourg Debt Fund (Details) - USD ($) $ in Thousands	1 Months Ended
Nov. 30, 2017	Mar. 31, 2018	Dec. 31, 2017
Debt Obligations
Debt, Carrying Value		$ 1,419,838	$ 1,418,422
Weighted Average Note Rate (as a percent)		3.74%	3.34%
Luxembourg debt fund
Debt Obligations
Value of portfolio loans as collateral	$ 100,000
Debt, Face Value	$ 70,000	$ 70,000	$ 70,000
Debt, Carrying Value		$ 68,176	$ 68,084
Weighted Average Note Rate (as a percent)		6.12%	5.79%
Collateral Loans, UPB		$ 97,700	$ 96,995
Collateral Loans, Carrying Value		97,256	96,564
Cash collateral			3,005
Deferred financing fees		$ 1,800	$ 1,900
Weighted average note rate including certain fees and costs (as a percent)		6.51%	6.05%
Collateral at risk		$ 0	$ 0
One-month LIBOR \| Luxembourg debt fund
Debt Obligations
Variable rate, spread (as a percent)	4.15%
Luxembourg commercial real estate debt fund
Debt Obligations
Equity formed	$ 100,000
Equity interest retained	$ 30,000
Reinvested period allowed	3 years

Represents the face value of collateral in default, as defined by the CDO indenture, as well as assets deemed to be a credit risk. Credit risk assets are reported by each of the CDOs and are generally defined as the one that, in the CDO collateral manager's reasonable business judgment, has a significant risk of declining in credit quality or, with a passage of time, becoming a defaulted asset.

No definition available.