SUBSEQUENT EVENTS (Details)	1 Months Ended		3 Months Ended			6 Months Ended
	Jul. 28, 2021 USD ($) store $ / shares	Jul. 27, 2021 USD ($) $ / shares shares	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($) $ / shares shares	Mar. 31, 2020 USD ($)	Jun. 30, 2021 USD ($) $ / shares shares	Jul. 16, 2021 USD ($)	Jul. 15, 2021 USD ($)	May 03, 2021 $ / shares	Feb. 04, 2021 $ / shares	Dec. 31, 2020	Aug. 31, 2018 USD ($)
Subsequent Event [Line Items]
Lease termination costs				$ 565,000
Net accelerated depreciation and write-off of ROU assets and lease liabilities				4,258,000
Total value of shares repurchased				$ 1,752,000	$ 5,509,000
Quarterly cash dividend (in usd per share) | $ / shares									$ 0.11	$ 0.055
Repurchase Program, 2021
Subsequent Event [Line Items]
Average price paid per share (in usd per share) | $ / shares				$ 16.77		$ 16.77
Total value of shares repurchased				$ 1,800,000		$ 1,800,000
Total number of shares repurchased (in shares) | shares				104,487		104,487
Subsequent Event
Subsequent Event [Line Items]
Restructuring and related cost, expected cost	$ 5,700,000
Quarterly cash dividend (in usd per share) | $ / shares	$ 0.11
Subsequent Event | Repurchase Program, 2021
Subsequent Event [Line Items]
Average price paid per share (in usd per share) | $ / shares		$ 16.44
Total value of shares repurchased		$ 4,500,000
Total number of shares repurchased (in shares) | shares		271,393
Subsequent Event | Forecast
Subsequent Event [Line Items]
Severance and employee costs			$ 2,500,000
Lease termination costs			900,000
Net accelerated depreciation and write-off of ROU assets and lease liabilities			$ 2,300,000
Subsequent Event | US
Subsequent Event [Line Items]
Number of additional stores to be closed | store	30
Subsequent Event | Texas
Subsequent Event [Line Items]
Number of additional stores to be closed | store	25
Subsequent Event | California
Subsequent Event [Line Items]
Number of additional stores to be closed | store	2
Subsequent Event | Louisiana
Subsequent Event [Line Items]
Number of additional stores to be closed | store	1
Subsequent Event | Nevada
Subsequent Event [Line Items]
Number of additional stores to be closed | store	1
Subsequent Event | Tennessee
Subsequent Event [Line Items]
Number of additional stores to be closed | store	1
Senior Notes | Subsequent Event
Subsequent Event [Line Items]
Stated interest rate							7.50%
Secured Notes Due 2028 | Senior Notes | Subsequent Event
Subsequent Event [Line Items]
Stated interest rate							7.50%
Debt instrument, face amount							$ 750,000,000.0	$ 700,000,000.0
8.25% Senior Secured Notes | Senior Notes
Subsequent Event [Line Items]
Stated interest rate				8.25%		8.25%					8.25%	8.25%
Debt instrument, face amount												$ 690,000,000.0
8.25% Senior Secured Notes | Senior Notes | Subsequent Event
Subsequent Event [Line Items]
Stated interest rate							8.25%