INCOME TAXES (Narrative) (Details) - USD ($)	10 Months Ended	12 Months Ended
	Dec. 31, 2017	Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2017
Operating Loss Carryforwards [Line Items]
Valuation allowance percentage			100.00%
Change in valuation allowance		$ 5,900,000
Gross excess tax deductions from share-based payment arrangements		2,900,000	$ 2,600,000	$ 0
Unrecognized tax benefit from uncertain tax position		3,200,000	1,000,000	1,000,000
Accrued interest and/or penalties		$ 0
Federal corporate tax rate	35.00%	21.00%
Tax Cuts and Jobs Act, Income tax expense			6,600,000
One-time transition tax liability, increase in income tax expense			2,400,000
Income tax expense associated with transition tax		$ 0
Deferred income taxes recognized		0
Income tax expense		(1,330,000)	10,681,000	$ (1,563,000)
Minimum [Member]
Operating Loss Carryforwards [Line Items]
Income tax benefit attributable to reduction in unrecognized tax benefits		600,000
Domestic Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards		30,100,000
Domestic Tax Authority [Member] | Research Tax Credit Carryforward [Member]
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards		9,100,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards		60,800,000
Income tax expense		300,000
State and Local Jurisdiction [Member] | Research Tax Credit Carryforward [Member]
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards		8,900,000
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards		44,700
Unexpire operating loss carryforwards		$ 18,300
Italy [Member]
Operating Loss Carryforwards [Line Items]
Foreign deferred tax assets			7,400,000
Canada [Member]
Operating Loss Carryforwards [Line Items]
Foreign deferred tax assets			$ 7,600,000