Consolidated Statement of Operations	12 Months Ended
	Feb. 28, 2017 USD ($) $ / shares shares	Feb. 29, 2016 USD ($) $ / shares shares	Feb. 28, 2015 USD ($) $ / shares shares
Net sales	$ 681,042,000	$ 680,746,000	$ 757,498,000
Cost of sales	479,527,000	485,061,000	533,628,000
Gross profit	201,515,000	195,685,000	223,870,000
Operating expenses:
Selling	48,205,000	48,513,000	54,136,000
General and administrative	107,882,000	111,382,000	114,849,000
Engineering and technical support	45,600,000	37,490,000	37,157,000
Goodwill, Impairment Loss	0	0	0
Impairment of Intangible Assets (Excluding Goodwill)	0	9,070,000	0
Asset Impairment Charges	0	(9,070,000)	(9,304,000)
Restructuring expense	0	0	1,134,000
Acquisition related costs	0	800,000	0
Total operating expenses	201,687,000	207,255,000	207,276,000
Operating income (loss)	(172,000)	(11,570,000)	16,594,000
Other (expense) income:
Interest and Debt Expense	7,488,000	8,075,000	6,851,000
Equity in income of equity investee	6,797,000	6,538,000	5,866,000
Foreign Currency Transaction Gain (Loss), before Tax	(509,000)	108,000	(6,504,000)
Impairment of Long-Lived Assets Held-for-use	0	0	(9,304,000)
Business Combination, Bargain Purchase, Gain Recognized, Amount	0	4,679,000	0
Other, net	(572,000)	632,000	1,495,000
Nonoperating Income (Expense)	(1,271,000)	3,772,000	(15,898,000)
Income from operations before income taxes	(1,443,000)	(7,798,000)	696,000
Income tax expense (benefit)	1,759,000	(1,735,000)	1,638,000
Net Income (Loss) Attributable to Parent	4,422,000	(2,682,000)	(942,000)
Net Income (Loss) Attributable to Noncontrolling Interest	(7,624,000)	(3,381,000)	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(3,202,000)	(6,063,000)	(942,000)
Other comprehensive income (loss):
Foreign currency translation adjustments	(3,194,000)	(5,702,000)	(33,170,000)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	(41,831,000)	(38,637,000)	(32,935,000)
Derivatives designated for hedging	210,000	(2,440,000)	3,258,000
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	313,000	103,000	2,543,000
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	(180,000)	640,000	(1,423,000)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(43,898,000)	(40,717,000)	(33,235,000)
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	(17,000)	20,000	(27,000)
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(98,000)	(81,000)	(101,000)
Other comprehensive income (loss), net of tax	(3,181,000)	(7,482,000)	(31,362,000)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 1,241,000	$ (10,164,000)	$ (32,304,000)
Net income per common share (basic) | $ / shares	$ 0.18	$ (0.11)	$ (0.04)
Net income per common share (diluted) | $ / shares			$ (0.04)
Weighted Average Number of Shares Outstanding, Basic | shares	24,160,324	24,172,710	24,330,361
Weighted Average Number of Shares Outstanding, Diluted | shares	24,240,310	24,172,710	24,330,361
Venezuela subsidiary [Member]
Other (expense) income:
Foreign Currency Transaction Gain (Loss), before Tax	$ (8,000)	$ (2,000)	$ (7,104,000)