GOODWILL AND OTHER INTANGIBLE ASSETS (Schedule of Other Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014
Other intangible assets:
Beginning balance	$ 40,377
Additions	1,040
Retirements	(4,231)
Ending balance	37,186	$ 40,377
Beginning balance	17,781
Intangible assets amortization expense	6,626	6,590	$ 6,283
Retirements	(4,231)
Ending balance	20,176	17,781
Net	$ 17,010	22,596
Minimum [Member]
Other intangible assets:
Amortization period	2 years
Maximum [Member]
Other intangible assets:
Amortization period	7 years
Supply contract [Member]
Other intangible assets:
Amortization period	5 years
Beginning balance	$ 2,220
Additions
Retirements
Ending balance	$ 2,220	2,220
Beginning balance	1,247
Intangible assets amortization expense	$ 432
Retirements
Ending balance	$ 1,679	1,247
Net	541	973
Developed technology [Member]
Other intangible assets:
Beginning balance	16,151
Additions	930
Retirements	(3,001)
Ending balance	14,080	16,151
Beginning balance	7,126
Intangible assets amortization expense	2,302
Retirements	(3,001)
Ending balance	6,427	7,126
Net	$ 7,653	9,025
Developed technology [Member] | Minimum [Member]
Other intangible assets:
Amortization period	2 years
Developed technology [Member] | Maximum [Member]
Other intangible assets:
Amortization period	7 years
Tradename [Member]
Other intangible assets:
Amortization period	7 years
Beginning balance	$ 2,130
Additions	$ 13
Retirements
Ending balance	$ 2,143	2,130
Beginning balance	1,217
Intangible assets amortization expense	$ 305
Retirements
Ending balance	$ 1,522	1,217
Net	621	913
Customer lists [Member]
Other intangible assets:
Beginning balance	$ 19,438
Additions
Retirements	$ (1,138)
Ending balance	18,300	19,438
Beginning balance	7,949
Intangible assets amortization expense	3,547
Retirements	(1,138)
Ending balance	10,358	7,949
Net	$ 7,942	11,489
Customer lists [Member] | Minimum [Member]
Other intangible assets:
Amortization period	5 years
Customer lists [Member] | Maximum [Member]
Other intangible assets:
Amortization period	7 years
Covenants not to Compete [Member]
Other intangible assets:
Amortization period	5 years
Beginning balance	$ 262
Additions
Retirements	$ (92)
Ending balance	170	262
Beginning balance	187
Intangible assets amortization expense	33
Retirements	(92)
Ending balance	128	187
Net	$ 42	75
Patents [Member]
Other intangible assets:
Amortization period	5 years
Beginning balance	$ 176
Additions	$ 97
Retirements
Ending balance	$ 273	176
Beginning balance	55
Intangible assets amortization expense	$ 7
Retirements
Ending balance	$ 62	55
Net	$ 211	$ 121