STOCKHOLDERS' EQUITY - NARRATIVE (Details) - USD ($)		3 Months Ended		6 Months Ended
	Feb. 11, 2021	Mar. 31, 2021	Jun. 30, 2020	Jun. 30, 2020	Feb. 03, 2021	Oct. 24, 2014	Nov. 01, 2007
Equity, Class of Treasury Stock [Line Items]
Shelf Registration, Amount of Capital Authorized for Future Issuance, Value					$ 250,000,000
Stock Issued During Period, Maximum Value Authorized For Issuance	$ 50,000,000
Sale of stock, number of shares issued in transaction (in shares)		3,300,000
Consideration received, net		$ 35,900,000
Stock issuance costs		$ 1,200,000
Repurchased shares (in shares)			2,900,000	4,900,000
Repurchased shares, value			$ 18,667,000	$ 30,642,000
Stock repurchase program, average cost (in dollars per share)			$ 6.39	$ 6.39
Treasury Stock
Equity, Class of Treasury Stock [Line Items]
Repurchased shares (in shares)			2,920,211	4,932,977
Repurchased shares, value			$ 18,667,000	$ 30,642,000
Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount							$ 50,000,000.0
Stock repurchase program, additional authorized amount						$ 30,000,000.0