Consolidated Statements Of Stockholders' Equity And Comprehensive Income (USD $) In Thousands, unless otherwise specified	Common Stock [Member]	Paid-In Capital [Member]	Treasury Stock [Member]	Restricted Stock [Member]	Non-Controlling Interest [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Mar. 31, 2009	$ 575	$ 63,634	$ (180)	$ (2,904)		$ 75,680	$ (33,773)	$ 103,032
Balance, shares at Mar. 31, 2009	12,374
Net income (loss)						14,268		14,268
Other comprehensive income:
Unrealized foreign currency translation gain (loss)							29,282	29,282
Unrealized gain on interest rate swaps, net of tax							346	346
Additional minimum pension liability adjustment, net of tax							130	130
Total comprehensive income								44,026
Issuance of common stock	1	37						38
Issuance of common stock, shares	23
Excess tax benefit (deficiency) from stock based compensation		(193)						(193)
Restricted stock grant	1	249		(250)
Share-based compensation		879		1,374				2,253
Shares acquired under employee plans			(59)					(59)
Common stock dividends						(2,469)		(2,469)
Balance at Mar. 31, 2010	577	64,606	(239)	(1,780)		87,479	(4,015)	146,628
Balance, shares at Mar. 31, 2010	12,397
Net income (loss)						18,411		18,411
Other comprehensive income:
Unrealized foreign currency translation gain (loss)							19,378	19,378
Unrealized gain on interest rate swaps, net of tax							209	209
Additional minimum pension liability adjustment, net of tax							(28)	(28)
Total comprehensive income								37,970
Issuance of common stock	99	8,172						8,271
Issuance of common stock, shares	997
Excess tax benefit (deficiency) from stock based compensation		(368)						(368)
Restricted stock grant	1	249		(250)
Restricted stock forfeiture		(51)		51
Share-based compensation		766		1,579				2,345
Shares acquired under employee plans			(408)					(408)
Common stock dividends						(2,612)		(2,612)
Balance at Mar. 31, 2011	677	73,374	(647)	(400)		103,278	15,544	191,826
Balance, shares at Mar. 31, 2011	13,394
Net income (loss)					(32)	19,700		19,668
Other comprehensive income:
Unrealized foreign currency translation gain (loss)							(5,580)	(5,580)
Unrealized gain on interest rate swaps, net of tax							81	81
Additional minimum pension liability adjustment, net of tax							(234)	(234)
Total comprehensive income								13,935
Acquisition of non-controlling interest					939			939
Non-controlling interest activity					(65)			(65)
Buy-out of non-controlling interest					(842)			(842)
Issuance of common stock	280	48,496						48,776
Issuance of common stock, shares	2,813
Excess tax benefit (deficiency) from stock based compensation		338						338
Restricted stock grant	1	249		(250)
Share-based compensation		787		275				1,062
Shares acquired under employee plans			(8)					(8)
Shares acquired under employee plans, shares	1
Common stock dividends						(2,941)		(2,941)
Balance at Mar. 31, 2012	$ 958	$ 123,244	$ (655)	$ (375)		$ 120,037	$ 9,811	$ 253,020
Balance, shares at Mar. 31, 2012	16,208