SIGNIFICANT ACCOUNTING MATTERS (Details) $ / shares in Units, $ in Thousands		1 Months Ended		3 Months Ended								12 Months Ended
	Feb. 29, 2016 USD ($) VEF / $	Feb. 29, 2016 USD ($) VEF / $	Feb. 28, 2013 USD ($) VEF / $	Feb. 29, 2016 USD ($) $ / shares VEF / $	Nov. 30, 2015 USD ($) $ / shares	Aug. 31, 2015 USD ($) $ / shares	May. 31, 2015 USD ($) $ / shares	Feb. 28, 2015 USD ($) $ / shares	Nov. 30, 2014 USD ($) $ / shares	Aug. 31, 2014 USD ($) $ / shares	May. 31, 2014 USD ($) $ / shares	Feb. 29, 2016 USD ($) $ / shares VEF / $	Feb. 28, 2015 USD ($) $ / shares	Feb. 28, 2014 USD ($) $ / shares	Mar. 31, 2016 VEF / $
Change in Accounting Estimate
Value of foreign currency before devaluation (in Bolivars per dollar) | VEF / $	6.3
Asset impairment charges				$ 3,000			$ 3,000				$ 9,000	$ 6,000	$ 9,000	$ 12,049
Cash and cash equivalents	$ 225,800	$ 225,800	$ 12,842	225,800				$ 12,295				225,800	12,295	70,027
Inventory	301,609	301,609		301,609				293,081				301,609	293,081
Property and equipment, net	$ 130,465	$ 130,465		130,465				126,068				130,465	126,068
Operating income												130,615	161,719	117,100
Net Income				$ 9,588	$ 46,778	$ 24,452	$ 20,410	$ 40,550	$ 55,377	$ 18,839	$ 16,398	$ 101,228	$ 131,164	$ 86,248
Diluted earnings per share (in dollars per share) | $ / shares				$ 0.34	$ 1.63	$ 0.84	$ 0.70	$ 1.40	$ 1.92	$ 0.65	$ 0.55	$ 3.52	$ 4.52	$ 2.66
Revision to product liability estimates
Change in Accounting Estimate
Operating income												$ 2,220
Net Income												$ 1,360
Diluted earnings per share (in dollars per share) | $ / shares												$ 0.05
SIMADI
Change in Accounting Estimate
Value of foreign currency after devaluation (in Bolivars per dollar) | VEF / $	205											205
DICOM
Change in Accounting Estimate
Value of foreign currency after devaluation (in Bolivars per dollar) | VEF / $		10.00
Venezuelan Bolivar
Change in Accounting Estimate
Value of foreign currency before devaluation (in Bolivars per dollar) | VEF / $	6.3		4.30
Value of foreign currency after devaluation (in Bolivars per dollar) | VEF / $			6.30
Venezuelan Bolivar | SIMADI
Change in Accounting Estimate
Value of foreign currency after devaluation (in Bolivars per dollar) | VEF / $	205
Foreign currency exchange rate ( in foreign currency per dollar) | VEF / $	205	205		205								205
Venezuelan Bolivar | DICOM
Change in Accounting Estimate
Value of foreign currency before devaluation (in Bolivars per dollar) | VEF / $		6.30
Foreign currency exchange rate ( in foreign currency per dollar) | VEF / $															207
Venezuela
Change in Accounting Estimate
Charge from re-measurement of monetary assets and liabilities due to an exchange rate change	$ 9,570											$ 18,730
Asset impairment charges	9,160
Inventory	300	$ 300		$ 300								300
Net investment in Venezuelan operations	149	149		149								149
Operating income												(9,950)	$ 2,870	$ 2,670
Venezuela | Before Adjustment
Change in Accounting Estimate
Inventory	9,378	9,378		9,378								9,378
Net investment in Venezuelan operations	18,882	18,882		18,882								18,882
Venezuela | Adjustments
Change in Accounting Estimate
Inventory	(9,078)	(9,078)		(9,078)								(9,078)
Net investment in Venezuelan operations	(18,733)	(18,733)		(18,733)								$ (18,733)
Venezuela | Net sales revenue
Change in Accounting Estimate
Concentration risk percentage												1.40%	0.70%	0.60%
Venezuela | Net sales revenue | DICOM
Change in Accounting Estimate
Concentration risk percentage												0.10%	0.10%	0.10%
SG&A | Venezuela
Change in Accounting Estimate
Cash and cash equivalents	10	10		10								$ 10
Other net assets, principally working capital other than inventory	(164)	(164)		(164)								(164)
Property and equipment, net	3	3		3								3
SG&A | Venezuela | Before Adjustment
Change in Accounting Estimate
Cash and cash equivalents	1,302	1,302		1,302								1,302
Other net assets, principally working capital other than inventory	8,120	8,120		8,120								8,120
Property and equipment, net	82	82		82								82
SG&A | Venezuela | Adjustments
Change in Accounting Estimate
Cash and cash equivalents	(1,292)	(1,292)		(1,292)								(1,292)
Other net assets, principally working capital other than inventory	(8,284)	(8,284)		(8,284)								(8,284)
Property and equipment, net	$ (79)	$ (79)		$ (79)								$ (79)