Acquisitions (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 29, 2016	Nov. 30, 2015	Aug. 31, 2015	May. 31, 2015	Feb. 28, 2015	Nov. 30, 2014	Aug. 31, 2014	May. 31, 2014	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014	Jan. 15, 2016	Sep. 01, 2015	Jan. 09, 2014	Feb. 28, 2013
Business Acquisition, Percentage of Voting Interests Acquired	0.00%								0.00%				100.00%
Goodwill	$ 104,349				$ 105,874				$ 104,349	$ 105,874	$ 117,938				$ 146,680
Accounts Receivable, Net, Current	$ 87,055				102,766				87,055	102,766
Business Combination, Consideration Transferred									31,880
Payments to Acquire Businesses, Gross									$ 15,504
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	0.00%								0.00%
Business Combination, Consideration Transferred, Other									$ 1,200
Line of Credit Facility, Maximum Borrowing Capacity												$ 125,000		$ 200,000
Revenue, Net	$ 169,683	$ 192,506	$ 154,174	$ 164,383	169,900	$ 223,356	$ 177,343	$ 186,899	680,746	757,498	809,709
Inventory, Net	144,028				156,649				144,028	156,649
Property, Plant and Equipment, Net	79,422				69,783				79,422	69,783
Intangible Assets, Net (Excluding Goodwill)	185,022				158,455				185,022	158,455
Other Assets, Noncurrent	4,690				6,908				4,690	6,908
Total assets	669,712				677,513				669,712	677,513
Other Liabilities, Current	50,748				51,744				50,748	51,744
Deferred Tax Liabilities, Net	30,351				32,947				30,351	32,947
Other Liabilities, Noncurrent	$ 10,480				$ 9,648				10,480	9,648
Business Combination, Bargain Purchase, Gain Recognized, Amount									4,679	0	0
Business Combination, Acquisition Related Costs									800	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest									$ (6,063)	$ (942)	$ (26,597)
Earnings Per Share, Basic	$ (0.22)	$ 0.32	$ (0.18)	$ (0.03)	$ (0.60)	$ 0.64	$ (0.11)	$ 0.02	$ (0.11)	$ (0.04)	$ (1.10)
Earnings Per Share, Diluted	$ (0.22)	$ 0.32	$ (0.18)	$ (0.03)	$ (0.60)	$ 0.64	$ (0.11)	$ 0.02			$ (1.10)
Weighted Average Number of Shares Outstanding, Basic									24,172,710	24,330,361	24,109,270
Weighted Average Number of Shares Outstanding, Diluted									24,172,710	24,330,361	24,109,270
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
Eyelock [Member]
Goodwill	$ 31,290								31,290
Accounts Receivable, Net, Current	77								77
Inventory, Net	304								304
Property, Plant and Equipment, Net	259								259
Intangible Assets, Net (Excluding Goodwill)	43,780								43,780
Total assets	44,420								44,420
Other Liabilities, Current	729								729
Deferred Tax Liabilities, Net	2,756								2,756
Debt and Capital Lease Obligations	3,176								3,176
Other Liabilities, Noncurrent	1,200								1,200
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	36,559								36,559
Finite-Lived Patents, Gross	585								585
Finite-Lived Trademarks, Gross	8,435								8,435
Finite-Lived Customer Relationships, Gross	$ 3,470								3,470
Business Acquisition, Pro Forma Revenue									681,861	$ 763,317
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest									(2,682)	(942)
Business Acquisition, Pro Forma Net Income (Loss)									$ (12,098)	$ (6,073)
Earnings Per Share, Basic									$ (0.11)	$ (0.04)
Business Acquisition, Pro Forma Earnings Per Share, Basic									(1)	(0.25)
Earnings Per Share, Diluted									(0.11)	(0.04)
Business Acquisition, Pro Forma Earnings Per Share, Diluted									$ (1)	$ (0.25)
Weighted Average Number of Shares Outstanding, Diluted									24,172,710	24,330,361
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