SIGNIFICANT ACCOUNTING POLICIES Narrative (Details)	12 Months Ended
	Dec. 31, 2019 USD ($) segment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Accounting Policies [Abstract]
Financing Receivable, Allowance for Credit Loss	$ 15,000,000	$ 9,012,000	$ 9,012,000	$ 9,012,000
Accounting Policies [Line Items]
Profit commission reserves	1,200,000	8,500,000
Profit commission expense, net	6,700,000	18,200,000	2,000,000
Net increase (decrease) in provision	5,988,000	0	$ 0
Amount of notes receivable placed on non-accrual status	0	9,800,000
Accrued interest on notes receivable	100,000	200,000
Deposit assets	5,200,000	11,900,000
Deposit liabilities	$ 56,900,000	$ 52,900,000
Number of operating segments | segment	1
Operating lease, right-of-use asset	$ 300,000
Operating lease liability	$ 300,000