ORGANIZATION AND BASIS OF PRESENTATION (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) segment	Jan. 01, 2017 USD ($)	Dec. 31, 2016 USD ($)
Summary of significant accounting policies
Number of reporting segments | segment	2
Cumulative effect of an accounting change (Note 1)		$ 0
Restricted cash	$ 4,127		$ 4,127
Lenders One
Summary of significant accounting policies
Total assets (less than)	3,800		3,800
Total liabilities (less than)	900		1,500
Wholesale One
Summary of significant accounting policies
Total assets (less than)	100		100
Total liabilities (less than)	$ 100		$ 100
Additional paid-in capital
Summary of significant accounting policies
Cumulative effect of an accounting change (Note 1)		932
Accounting Standards Update 2016-09 | Retained earnings
Summary of significant accounting policies
Cumulative effect of an accounting change (Note 1)		$ (932)