Stockholders' Equity (Changes in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance		$ (14,853)	$ 529	$ 4,438
Other comprehensive income (loss) before reclassifications		(3,712)	(15,708)	(4,235)
Amounts reclassified from AOCI	[1]	259	517	517
Tax effect of other comprehensive income items		(96)	(191)	(191)
Other comprehensive income (loss), net of tax		(3,549)	(15,382)	(3,909)
Ending balance		(18,402)	(14,853)	529
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance		(14,690)	1,018	5,253
Other comprehensive income (loss) before reclassifications		(3,712)	(15,708)	(4,235)
Amounts reclassified from AOCI	[1]	0	0	0
Tax effect of other comprehensive income items		0	0	0
Other comprehensive income (loss), net of tax		(3,712)	(15,708)	(4,235)
Ending balance		(18,402)	(14,690)	1,018
Treasury Rate Lock Agreement [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance		(163)	(489)	(815)
Other comprehensive income (loss) before reclassifications		0	0	0
Amounts reclassified from AOCI	[1]	259	517	517
Tax effect of other comprehensive income items		(96)	(191)	(191)
Other comprehensive income (loss), net of tax		163	326	326
Ending balance		$ 0	$ (163)	$ (489)

[1] The reclassifications out of AOCI were associated with a loss on a treasury rate lock agreement from July 2010 related to the issuance of the Company’s 2015 Notes, which was being reclassified into earnings (interest expense) over the term of the 2015 Notes until their redemption in September 2015. The effects on the respective line items of the consolidated statements of earnings impacted by the reclassifications were not material for the twelve months ended March 31, 2016, 2015 and 2014.