Consolidated Statement of Operations - USD ($)	3 Months Ended									6 Months Ended	12 Months Ended
	Feb. 28, 2019	Nov. 30, 2018	Aug. 31, 2018	May 31, 2018	Feb. 28, 2018	Nov. 30, 2017	Aug. 31, 2017	May 31, 2017	Feb. 28, 2017	Aug. 31, 2018	Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Revenue from Contract with Customer, Excluding Assessed Tax	$ 107,457,000	$ 129,637,000	$ 108,867,000	$ 100,855,000	$ 122,236,000	$ 156,563,000	$ 113,470,000	$ 114,823,000	$ 514,530,000		$ 446,816,000	$ 507,092,000	$ 514,530,000
Cost of Goods and Services Sold									370,500,000		325,399,000	374,795,000
Gross profit	23,754,000	38,923,000	31,063,000	27,677,000	32,213,000	41,519,000	28,421,000	30,144,000	144,030,000		121,417,000	132,297,000
Operating expenses:
Selling									43,108,000		40,915,000	45,999,000
General and administrative									79,573,000		66,935,000	78,957,000
Engineering and technical support									29,517,000		24,387,000	26,440,000
Goodwill, Impairment Loss									0		0	0
Total operating expenses									152,198,000		162,614,000	151,396,000
Operating income (loss)									(8,168,000)		(41,197,000)	(19,099,000)
Other (expense) income:
Interest and Debt Expense									7,105,000		4,449,000	6,009,000
Equity in income of equity investee									6,797,000		6,618,000	7,178,000
Foreign Currency Transaction Gain (Loss), before Tax									(509,000)		220,000	(8,769,000)
Impairment of Long-Lived Assets Held-for-use									0		(3,473,000)	0	0
Allowance for Loan and Lease Losses, Write-offs									0		(16,509,000)	0
Cost-method Investments, Realized Gain (Loss)									0		(530,000)	(1,416,000)
Other, net									(454,000)		577,000	(7,590,000)
Nonoperating Income (Expense)									(762,000)		(17,766,000)	(5,005,000)
Income from operations before income taxes									(8,930,000)		(58,963,000)	(24,104,000)
Income tax expense (benefit)									338,000		(6,131,000)	(17,445,000)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	(38,347,000)	10,569,000	(22,502,000)	(2,552,000)	8,396,000	7,477,000	(19,848,000)	(2,684,000)	(9,268,000)		(52,832,000)	(6,659,000)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0	0	0	0	2,276,000	(368,000)	34,931,000	(2,221,000)	6,066,000		0	34,618,000
Net Income (Loss) Attributable to Parent	(36,560,000)	$ 12,211,000	$ (20,803,000)	$ (939,000)	12,585,000	$ 8,644,000	$ 17,106,000	$ (3,031,000)	4,422,000		(46,091,000)	35,304,000
Net Income (Loss) Attributable to Noncontrolling Interest									(7,624,000)		(6,741,000)	(7,345,000)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest									(3,202,000)		(52,832,000)	27,959,000
Other comprehensive income (loss):
Foreign currency translation adjustments									(3,194,000)		(3,195,000)	28,804,000
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	(16,222,000)				(13,027,000)				(41,831,000)		(16,222,000)	(13,027,000)	(41,831,000)	$ (38,637,000)
Derivatives designated for hedging									210,000		461,000	(698,000)	210,000
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	76,000				(385,000)				313,000		76,000	(385,000)	313,000	103,000
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax									(180,000)		(12,000)	1,496,000	(180,000)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(16,944,000)				(14,222,000)				(43,898,000)		(16,944,000)	(14,222,000)	(43,898,000)	(40,717,000)
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax									(17,000)		24,000	74,000
Accumulated Other Comprehensive Income (Loss), Debt Securities, Available-for-sale, Adjustment, after Tax	$ 0				$ (24,000)				(98,000)		0	(24,000)	(98,000)	$ (81,000)
Other comprehensive income (loss), net of tax									(3,181,000)		(2,722,000)	29,676,000	$ (3,181,000)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									$ 1,241,000		$ (48,813,000)	$ 64,980,000
Income (Loss) from Continuing Operations, Per Basic Share	$ (1.50)	$ 0.50	$ (0.85)	$ (0.04)	$ 0.42	$ 0.37	$ (0.74)	$ (0.03)	$ (0.07)		$ (1.89)	$ 0.03
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share	0	0	0	0	0.09	(0.02)	1.45	(0.09)	0.25		0.00	1.43
Net income per common share (basic)	(1.50)	0.50	(0.85)	(0.04)	0.52	0.36	0.71	(0.13)	0.18		(1.89)	1.45
Income (Loss) from Continuing Operations, Per Diluted Share	(1.50)	0.50	(0.85)	(0.04)	0.42	0.37	(0.74)	(0.03)	(0.07)		(1.89)	0.03
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share	0	0	0	0	0.09	(0.02)	1.45	(0.09)	0.25		0.00	1.41
Net income per common share (diluted)	$ (1.50)	$ 0.50	$ (0.85)	$ (0.04)	$ 0.51	$ 0.35	$ 0.71	$ (0.13)	$ 0.18		$ (1.89)	$ 1.44
Weighted Average Number of Shares Outstanding, Basic									24,160,324		24,355,791	24,290,563
Weighted Average Number of Shares Outstanding, Diluted									24,160,324		24,355,791	24,547,246
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)									$ 0	$ 9,814,000	$ 25,789,000	$ 0