RELATED PARTY TRANSACTIONS - Narrative (Details) $ in Thousands			1 Months Ended	3 Months Ended		6 Months Ended
	Aug. 10, 2020 USD ($)	Nov. 19, 2018 USD ($)	Apr. 30, 2020	Jun. 30, 2020 USD ($) shares	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) individual shares	Jun. 30, 2019 USD ($)	Jun. 08, 2020 shares
Related Party Transaction [Line Items]
Number of individuals to serve on the board of directors | individual						3
BPRI Executive Consulting, LLC | Chief Executive Officer
Related Party Transaction [Line Items]
Deferral percentage of monthly fee payment			50.00%
B. Riley Financial, Inc.
Related Party Transaction [Line Items]
Common stock issued equitization agreement (in shares) | shares				1,192,371		1,192,371		1,700,000
Total fees				$ 3,300	$ 10,100	$ 7,500	$ 11,500
Financial advisory services | BPRI Executive Consulting, LLC
Related Party Transaction [Line Items]
Related party payments		$ 750
Cash bonus					$ 2,000		$ 2,000
Babcock & Wilcox Enterprises, Inc. | B. Riley Capital Management, LLC
Related Party Transaction [Line Items]
Ownership percent of common stock						22.50%
Babcock & Wilcox Enterprises, Inc. | Vintage Capital Management, LLC
Related Party Transaction [Line Items]
Ownership percent of common stock						31.80%
Subsequent Event | B. Riley Financial, Inc.
Related Party Transaction [Line Items]
Performance bond amount	$ 30,000
Indemnity rider fee	$ 600
Indemnity rider fee, payment period	30 days
Indemnity rider fee, percentage of bonded obligation	2.00%