Fair Value Measurements Fair Value Hierarchy (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2017	Aug. 31, 2016	Feb. 28, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure		$ 45,821		$ 45,821		$ 956
Foreign Currency Contracts, Liability, Fair Value Disclosure		(1,057)		(1,057)		(345)
Other Investments and Securities, at Cost						6,288
Investments, Fair Value Disclosure		8,763		8,763		10,388
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net		(52)	$ 29	(95)	$ (21)
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure		45,821		45,821		956
Foreign Currency Contracts, Liability, Fair Value Disclosure						0
Foreign Currency Contract, Asset, Fair Value Disclosure		0		0
Other Investments and Securities, at Cost	[1]					0
Investments, Fair Value Disclosure		3,752		3,752		4,100
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure		0		0		0
Foreign Currency Contracts, Liability, Fair Value Disclosure		(1,057)		(1,057)		(345)
Other Investments and Securities, at Cost	[1]					0
Investments, Fair Value Disclosure		0		0		0
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Notional Amount		8,864		8,864
Trading Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure		3,749		3,749		4,094
Trading Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure		3,749		3,749		4,094
Trading Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure		0		0		0
Available-for-sale Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure		3		3		6
Available-for-sale Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure		3		3		6
Available-for-sale Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure		0		0		$ 0
Other Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Investments and Securities, at Cost		5,011		5,011
Other Investments [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Investments and Securities, at Cost		0		0
Other Investments [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Investments and Securities, at Cost		$ 0		$ 0

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