LIQUIDITY AND SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ / shares in Units, $ in Thousands					3 Months Ended		9 Months Ended
	Aug. 18, 2020	Jun. 20, 2019	Mar. 07, 2019	Jul. 19, 2018	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Significant Accounting Policies Disclosure [Line Items]
Working capital deficit					$ 64,700
Net income (loss) attributable to parent					3,306	$ 1,360	$ 9,321	$ 17,736
Cash, cash equivalents, restricted cash and restricted cash equivalents					83,743	$ 42,161	83,743	42,161			$ 38,388	$ 25,206
Deferred revenue, current					$ 179,500		179,500
Historical cost of goods and services (as a percent of deferred revenue)					39.00%
Underwriter discounts and commissions							1,650	0
Underwriter expenses							143	$ 0
Professional fees				$ 200
Gross cash proceeds				$ 133,000
Cash dividends payable (as a percent)				10.00%
Dividends payable					$ 75,878		75,878
Initial dividend period (in years)				5 years
Cash dividends payable after five year period (as a percent)				13.00%
Operating and capital lease payments due within next twelve months					$ 7,000		$ 7,000
Minimum
Significant Accounting Policies Disclosure [Line Items]
Dividends payable				$ 3,900
Maximum
Significant Accounting Policies Disclosure [Line Items]
Dividends payable				4,300
Revolving Credit Facility
Significant Accounting Policies Disclosure [Line Items]
Repayments of lines of credit				$ 132,800
Common Stock
Significant Accounting Policies Disclosure [Line Items]
New stock issued during period (shares)		72,414	134,483	2,900,000
Series A Preferred Stock
Significant Accounting Policies Disclosure [Line Items]
Dividend rate (as a percent)		13.00%			13.00%		13.00%
Temporary equity, par value (usd per share)		$ 0.0001
New stock issued during period (shares)				140,000
Dividends payable					$ 5,159		$ 5,159		$ 5,121	$ 5,027	$ 5,045
August 2020 Offering
Significant Accounting Policies Disclosure [Line Items]
Sale of stock (shares)	6,100,000
Price per share (usd per share)	$ 4.50
Gross proceeds	$ 27,500
Underwriter discounts and commissions	1,700
Underwriter expenses	100
Professional fees	600
Consideration received	$ 25,100
August 2020 Offering | Common Stock
Significant Accounting Policies Disclosure [Line Items]
New stock issued during period (shares)					6,100,000	0	6,100,000	0
Private Placement
Significant Accounting Policies Disclosure [Line Items]
Consideration received		$ 2,986	$ 5,034	$ 128,372
Private Placement | Common Stock
Significant Accounting Policies Disclosure [Line Items]
Sale of stock (shares)		72,414	134,483
New stock issued during period (shares)		72,414	134,483		0	0	0	207,000
Private Placement | Series A Preferred Stock
Significant Accounting Policies Disclosure [Line Items]
Sale of stock (shares)		3,500	6,500	140,000