GOODWILL AND INTANGIBLE ASSETS (Goodwill) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 144,067,000	$ 85,581,000
Goodwill acquired during the period		58,600,000
Foreign currency translation	(343,000)	(114,000)
Goodwill, ending balance	143,724,000	144,067,000	$ 85,581,000
Impairments of goodwill	0	0	0
Credit
Goodwill [Roll Forward]
Goodwill, beginning balance	32,196,000	32,196,000
Goodwill acquired during the period		0
Foreign currency translation	0	0
Goodwill, ending balance	32,196,000	32,196,000	32,196,000
Private Equity
Goodwill [Roll Forward]
Goodwill, beginning balance	58,600,000	0
Goodwill acquired during the period		58,600,000
Foreign currency translation	0	0
Goodwill, ending balance	58,600,000	58,600,000	0
Real Estate
Goodwill [Roll Forward]
Goodwill, beginning balance	53,271,000	53,385,000
Goodwill acquired during the period		0
Foreign currency translation	(343,000)	(114,000)
Goodwill, ending balance	$ 52,928,000	$ 53,271,000	$ 53,385,000