Acquisitions (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 28, 2017	Nov. 30, 2016	Aug. 31, 2016	May 31, 2016	Feb. 29, 2016	Nov. 30, 2015	Aug. 31, 2015	May 31, 2015	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2015	Sep. 01, 2015	Feb. 28, 2014
Business Acquisition, Percentage of Voting Interests Acquired												100.00%
Goodwill	$ 103,212				$ 104,349				$ 103,212	$ 104,349	$ 105,874		$ 117,938
Accounts Receivable, Net, Current	90,641				87,055				90,641	87,055
Business Combination, Consideration Transferred										31,880
Payments to Acquire Businesses, Gross										15,504
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners												0.00%
Business Combination, Consideration Transferred, Other										1,200
Convertible Notes Payable	12,000								12,000
Revenue, Net	167,387	$ 198,937	$ 159,262	$ 155,456	169,683	$ 192,506	$ 154,174	$ 164,383	681,042	680,746	757,498
Inventory, Net	153,053				144,028				153,053	144,028
Property, Plant and Equipment, Net	81,601				79,422				81,601	79,422
Intangible Assets, Net (Excluding Goodwill)	176,289				185,022				176,289	185,022
Other Assets, Noncurrent	1,699				2,168				1,699	2,168
Total assets	668,486				667,190				668,486	667,190
Other Liabilities, Current	42,476				50,748				42,476	50,748
Deferred Tax Liabilities, Net	30,132				30,351				30,132	30,351
Other Liabilities, Noncurrent	$ 10,384				$ 10,480				10,384	10,480
Business Combination, Bargain Purchase, Gain Recognized, Amount									0	4,679	0
Business Combination, Acquisition Related Costs									0	800	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest									$ (3,202)	$ (6,063)	$ (942)
Earnings Per Share, Basic	$ 0.00	$ 0.24	$ 0.12	$ (0.18)	$ (0.22)	$ 0.32	$ (0.18)	$ (0.03)	$ 0.18	$ (0.11)	$ (0.04)
Earnings Per Share, Diluted	$ 0.00	$ 0.24	$ 0.12	$ (0.18)	$ (0.22)	$ 0.32	$ (0.18)	$ (0.03)			$ (0.04)
Weighted Average Number of Shares Outstanding, Basic									24,160,324	24,172,710	24,330,361
Weighted Average Number of Shares Outstanding, Diluted									24,240,310	24,172,710	24,330,361
Eyelock [Member]
Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination										$ 4,676
Noncontrolling Interest [Member]
Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination										12,900
Minimum [Member]
Debt Instrument, Fee									1.35
Maximum [Member]
Debt Instrument, Fee									1.45
Eyelock [Member]
Goodwill												$ 31,290
Accounts Receivable, Net, Current												77
Inventory, Net												304
Property, Plant and Equipment, Net												259
Intangible Assets, Net (Excluding Goodwill)												43,780
Total assets												44,420
Other Liabilities, Current												729
Deferred Tax Liabilities, Net												2,756
Debt and Capital Lease Obligations												3,176
Other Liabilities, Noncurrent												1,200
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net												36,559
Finite-Lived Patents, Gross												585
Finite-Lived Trademarks, Gross												8,435
Finite-Lived Customer Relationships, Gross												3,470
Business Acquisition, Pro Forma Revenue									$ 681,861	763,317
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest										(2,682)
Business Acquisition, Pro Forma Net Income (Loss)									$ (12,098)	$ (6,073)
Earnings Per Share, Basic										$ (0.11)
Business Acquisition, Pro Forma Earnings Per Share, Basic									$ (0.50)	(0.25)
Earnings Per Share, Diluted									0.18	(0.11)
Business Acquisition, Pro Forma Earnings Per Share, Diluted									$ (0.50)	$ (0.25)
Weighted Average Number of Shares Outstanding, Diluted									24,240,310	24,172,710
Intangible Assets, Gross (Excluding Goodwill)												$ 43,780
Eyelock [Member] | Technology-Based Intangible Assets [Member]
Finite-Lived Intangible Asset, Useful Life									11 years 6 months
Eyelock [Member] | Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life									15 years 6 months
Eyelock [Member] | Noncompete Agreements [Member]
Finite-Lived Intangible Asset, Useful Life									5 years