NOTES PAYABLE - Schedule of Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total notes payable	$ 27,185	$ 114,539
Short-term notes payable	2,696	5,864
Long-term notes payable	24,489	108,675
Notes Payable, Other Payables
Debt Instrument [Line Items]
Total notes payable	$ 7,185	10,327
Notes Payable, Other Payables | Maximum
Debt Instrument [Line Items]
Stated Interest Rate	3.50%
Notes Payable, Other Payables | Minimum
Debt Instrument [Line Items]
Stated Interest Rate	2.00%
Notes Payable, Other Payables | Wells Fargo Syndicated Partner
Debt Instrument [Line Items]
Stated Interest Rate	10.55%
Total notes payable	$ 0	52,106
Notes Payable to Banks | Wells Fargo Term Loan
Debt Instrument [Line Items]
Stated Interest Rate	8.00%
Total notes payable	$ 20,000	0
Notes Payable to Banks | Wells Fargo Bank NA
Debt Instrument [Line Items]
Stated Interest Rate	5.55%
Total notes payable	$ 0	$ 52,106