SHARE-BASED COMPENSATION Narrative (Details) - USD ($)			3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
General and Administrative Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense			$ 900,000	$ 1,100,000
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Fair value (in dollars per share)			$ 6.72
Stock based compensation expense			$ 600,000	800,000
Number of restricted shares forfeited (in shares)			18,701
Shares forfeited			$ 100,000	0
Unrecognized cost	$ 3,600,000	$ 2,700,000	3,600,000
Period of recognition	2 years 2 months	1 year 7 months
Fair value of options vested in period			$ 2,100,000	$ 2,300,000
Number of RSUs issued to employees (in shares)			451,353
Restricted stock | Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			5 years
Fair value (in dollars per share)			$ 6.72	$ 10.84
Stock based compensation expense			$ 0
Restricted stock | Common Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)			306,264	235,701
Number of restricted shares forfeited (in shares)			18,701	0
Restricted stock | Common Class A | Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)			145,089	89,945
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense			$ 200,000	$ 300,000
Period of recognition			2 years 4 months	2 years 10 months
Options outstanding (in shares)	900,000	900,000	900,000
Number of stock options exercised (in shares)			0
Vested number of shares (in shares)			0
Cost not yet recognized	$ 1,100,000		$ 1,100,000	$ 1,900,000
Exercise price (in dollars per share)	$ 22.68	$ 22.68	$ 22.68
Weighted average grant date fair value, granted (in dollars per share)			$ 10.25	$ 10.25
Weighted average remaining contractual term	5 years 7 months	5 years 9 months
Stock Options | Common Class A | Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options granted (in shares)			0
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Fair value (in dollars per share)			$ 6.72
Stock based compensation expense			$ 100,000	$ 100,000
Number of RSUs issued to employees (in shares)			60,622	48,535
Shares forfeited (in shares)			0	24,165