MERGER TRANSACTION (Details) $ in Thousands	Apr. 30, 2014 USD ($)	Dec. 16, 2013
KFN | KKR & Co.
Merger transaction
Transaction costs	$ 24,200
KFN | KKR & Co. | General, administrative and directors expenses
Merger transaction
Transaction costs	$ 22,700
Predecessor Company | Phantom share
Merger transaction
Exchange ratio of share based awards under merger transaction	0.51
Predecessor Company | KFN | KKR & Co.
Merger transaction
Exchange ratio of share based awards under merger transaction	0.51	0.51
Assets acquired:
Cash and cash equivalents	$ 210,413
Restricted cash and cash equivalents	649,967
Securities	541,149
Corporate loans	6,649,054
Equity investments	297,054
Oil and gas properties, net	505,238
Interests in joint ventures and partnerships	491,324
Derivative assets	26,383
Interest and principal receivable	35,992
Other assets	208,144
Total assets	9,614,718
Liabilities assumed:
Collateralized loan obligation secured notes	5,663,666
Credit facilities	63,189
Senior notes	415,538
Junior subordinated notes	245,782
Accounts payable, accrued expenses and other liabilities	357,084
Accrued interest payable	17,647
Derivative liabilities	88,356
Total liabilities	6,851,262
Fair value of preferred shares	378,983
Fair value of net assets acquired	2,384,473
Less: Purchase price	2,369,559
Bargain purchase gain	$ 14,914
Predecessor Company | KFN | KKR & Co. | Restricted common shares
Merger transaction
Exchange ratio of share based awards under merger transaction	0.51