Fair Value Measurements (Details 3) (Level 3 [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Mar. 31, 2012
SERP obligations [Member]
Changes in the fair value of the Level 3 assets and liabilities related to continuing operations
Balance at April 1, 2011	$ 3,323	$ 5,791	$ 5,791
Unrealized losses relating to instruments still held at the reporting date
Amortization
Purchases, sales, issuances and settlements, net	(3,323)		30
Balance at March 31,2012		5,821	3,323
Other employee benefits plans obligations [Member]
Changes in the fair value of the Level 3 assets and liabilities related to continuing operations
Balance at April 1, 2011	196	305	305
Unrealized losses relating to instruments still held at the reporting date
Amortization
Purchases, sales, issuances and settlements, net
Balance at March 31,2012	196	305	196
Restructuring liabilities [Member]
Changes in the fair value of the Level 3 assets and liabilities related to continuing operations
Balance at April 1, 2011	6,299	733	733
Unrealized losses relating to instruments still held at the reporting date
Amortization
Purchases, sales, issuances and settlements, net	(2,582)		2,003
Balance at March 31,2012	3,717	2,736	6,299
Goodwill [Member]
Changes in the fair value of the Level 3 assets and liabilities related to continuing operations
Balance at April 1, 2012	15,198	15,211	15,211
Unrealized losses relating to instruments still held at the reporting date	(89)		(13)
Amortization
Purchases, sales, issuances and settlements, net
Balance at June 30,2012	15,109	15,198	15,198
Intangible Assets [Member]
Changes in the fair value of the Level 3 assets and liabilities related to continuing operations
Balance at April 1, 2012	14,135	22,535	22,535
Unrealized losses relating to instruments still held at the reporting date
Amortization	(539)	(766)
Purchases, sales, issuances and settlements, net	1,026		348
Balance at June 30,2012	$ 14,622	$ 22,117	$ 14,135