Organization and Significant Accounting Policies (Details 2) (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Accumulated other comprehensive income (loss)
Balance at the beginning of the period	$ 7,694,000	$ 12,020,000
Fiscal year activity	10,490,000	(4,326,000)
Balance at the end of the period	18,184,000	7,694,000
Tax effect of accumulated other comprehensive income (loss)	2,200,000	2,100,000	2,800,000
Foreign currency translation gains (losses), net of tax
Accumulated other comprehensive income (loss)
Balance at the beginning of the period	13,538,000	18,107,000
Fiscal year activity	9,797,000	(4,569,000)	(8,969,000)
Balance at the end of the period	23,335,000	13,538,000	18,107,000
Defined Benefit Pension Plans, tax benefit	1,900,000
Defined benefit post-retirement plan adjustments
Accumulated other comprehensive income (loss)
Balance at the beginning of the period	1,818,000	1,995,000
Fiscal year activity	(354,000)	(177,000)	(117,000)
Balance at the end of the period	1,464,000	1,818,000	1,995,000
Defined benefit pension plans, net of tax impact
Accumulated other comprehensive income (loss)
Balance at the beginning of the period	(7,662,000)	(8,082,000)
Fiscal year activity	276,000	420,000	(1,449,000)
Balance at the end of the period	(7,386,000)	(7,662,000)	(8,082,000)
Defined Benefit Pension Plans, tax benefit	100,000	700,000
Equity interest in investee's other comprehensive loss
Accumulated other comprehensive income (loss)
Balance at the beginning of the period	0	0
Fiscal year activity	771,000	0	0
Balance at the end of the period	$ 771,000	$ 0	$ 0