Variable Interest Entities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015	Feb. 29, 2016	Feb. 28, 2015	Jan. 09, 2014
Line of Credit Facility, Maximum Borrowing Capacity							$ 125,000
Cash and Cash Equivalents, at Carrying Value	$ 5,672	$ 12,435	$ 5,672	$ 12,435	$ 11,767	$ 8,448
Accounts Receivable, Net, Current	110,408		110,408		87,055
Inventory, Net	158,636		158,636		144,028
Prepaid Expense and Other Assets, Current	19,681		19,681		17,256
Total current assets	298,676		298,676		264,051
Property, Plant and Equipment, Net	79,664		79,664		79,422
Other Assets, Noncurrent	1,818		1,818		2,168
Total assets	694,506		694,506		667,190
Accounts Payable, Current	71,778		71,778		55,790
Other Liabilities, Current	44,785		44,785		50,748
Liabilities, Current	145,665		145,665		131,884
Long-term Debt, Excluding Current Maturities	108,953		108,953		90,691
Other Liabilities, Noncurrent	9,988		9,988		10,480
Liabilities	301,050		301,050		271,296
Additional Paid in Capital	295,087		295,087		294,038
Retained Earnings (Accumulated Deficit)	159,459		159,459		154,947
Stockholders' Equity Attributable to Parent	393,456		393,456		395,894
Liabilities and Equity	694,506		694,506		667,190
Revenue, Net	198,937	192,506	513,655	511,063
Cost of Goods Sold	140,724	136,663	362,848	362,202
Gross Profit	58,213	55,843	150,807	148,861
Selling Expense	12,421	12,464	36,200	36,182
General and Administrative Expense	27,240	29,536	79,214	83,530
Engineering and Technical Support Expense	11,243	9,459	36,013	26,190
Operating Expenses	50,904	52,259	151,427	152,912
Operating Income (Loss)	7,309	3,584	(620)	(4,051)
Interest and bank charges	(1,995)	(1,772)	(5,560)	(4,964)
Other Nonoperating Income (Expense)	100	636	(228)	1,103
Other Income	36	5,470	504	5,820
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	7,345	9,054	(1,124)	1,769
Income Tax Expense (Benefit)	3,435	2,968	(218)	791
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	3,910	6,086	(906)	978
Eyelock [Member]
Accounts Receivable, Net, Current	77		77
Inventory, Net	304		304
Property, Plant and Equipment, Net	259		259
Total assets	44,420		44,420
Other Liabilities, Current	729		729
Other Liabilities, Noncurrent	1,200		1,200
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		7,777		2,669
Eyelock [Member]
Line of Credit Facility, Maximum Borrowing Capacity	12,000		12,000
Cash and Cash Equivalents, at Carrying Value	21		21		20
Accounts Receivable, Net, Current	340		340		195
Inventory, Net	395		395		304
Prepaid Expense and Other Assets, Current	208		208		256
Total current assets	964		964		775
Property, Plant and Equipment, Net	286		286		302
Intangible Assets, Net (Including Goodwill)	39,953		39,953		42,249
Other Assets, Noncurrent	108		108		0
Total assets	41,311		41,311		43,326
Accounts Payable, Current	527		527		746
Other Liabilities, Current	2,570		2,570		1,103
Liabilities, Current	3,097		3,097		1,849
Long-term Debt, Excluding Current Maturities	18,947		18,947		9,104
Other Liabilities, Noncurrent	1,200		1,200		1,200
Liabilities	23,244		23,244		12,153
Additional Paid in Capital	40,628		40,628		39,841
Retained Earnings (Accumulated Deficit)	(22,561)		(22,561)		(8,668)
Stockholders' Equity Attributable to Parent	18,067		18,067		31,173
Liabilities and Equity	41,311		41,311		$ 43,326
Revenue, Net	100	72	211	72
Cost of Goods Sold	37	11	67	11
Gross Profit	63	61	144	61
Selling Expense	553	359	1,639	359
General and Administrative Expense	1,759	1,779	5,056	1,779
Engineering and Technical Support Expense	2,154	2,142	6,248	2,142
Operating Expenses	4,466	4,280	12,943	4,280
Operating Income (Loss)	(4,403)	(4,219)	(12,799)	(4,219)
Interest and bank charges	(441)	(117)	(1,092)	(117)
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	(4,844)	(4,336)	(13,891)	(4,336)
Income Tax Expense (Benefit)	0	0	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(4,844)	$ (4,336)	(13,891)	$ (4,336)
Eyelock [Member] | Bridge Loans Receivable [Member]
Notes, Loans and Financing Receivable, Net, Noncurrent	$ 18,947		$ 18,947