Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 888	$ 1,101
Common stock, no par value	$ 0us-gaap_CommonStockNoParValue	$ 0us-gaap_CommonStockNoParValue
Common stock, stated value	$ 0.3	$ 0.3
Common stock, shares authorized	80,000,000us-gaap_CommonStockSharesAuthorized	80,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	31,606,831us-gaap_CommonStockSharesIssued	31,606,831us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	22,789,355us-gaap_CommonStockSharesOutstanding	22,467,970us-gaap_CommonStockSharesOutstanding
Treasury shares	8,817,477us-gaap_TreasuryStockShares	9,138,861us-gaap_TreasuryStockShares

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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