QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 29, 2020	Nov. 30, 2019	Aug. 31, 2019	May 31, 2019	Feb. 28, 2019	Nov. 30, 2018	Aug. 31, 2018	May 31, 2018	Feb. 29, 2020	Feb. 28, 2019	Feb. 28, 2018
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 87,204	$ 96,597	$ 93,236	$ 89,070	$ 84,380	$ 88,495	$ 96,037	$ 94,888	$ 366,107	$ 363,800	$ 365,912
Gross profit	$ 33,338	$ 36,884	$ 37,670	$ 35,411	$ 33,471	$ 36,381	$ 39,821	$ 38,091	$ 143,303	$ 147,764	$ 150,890
Gross margin	38.20%	38.20%	40.40%	39.80%	39.70%	41.10%	41.50%	40.10%	39.10%	40.60%	41.20%
Net income (loss)	$ (55,827)	$ (7,415)	$ (7,369)	$ (8,693)	$ 11,263	$ (522)	$ (854)	$ 8,511	$ (79,304)	$ 18,398	$ 16,617
Earnings (loss) per diluted share	$ (1.65)	$ (0.22)	$ (0.22)	$ (0.26)	$ 0.33	$ (0.02)	$ (0.02)	$ 0.23	$ (2.36)	$ 0.52	$ 0.46
Impairment of long-lived assets and right of use assets	$ 19,100
Change in valuation allowance deferred tax asset	$ 34,600								$ 33,000
Gain from legal settlement					$ 2,500	$ 2,500		$ 13,300		$ 18,333	$ 28,333
Loss on extinguishment of debt		$ 2,400					$ 2,000		$ 2,408	2,033
Legal provision previously reserved						$ 19,100
Temporary impairment										$ 5,000