Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Allowance for doubtful accounts	$ 2,155	$ 2,323
Voting common stock: shares authorized	50,000,000us-gaap_CommonStockSharesAuthorized	50,000,000us-gaap_CommonStockSharesAuthorized
Voting common stock: shares issued	19,989,548us-gaap_CommonStockSharesIssued	19,806,300us-gaap_CommonStockSharesIssued
Voting common stock: shares outstanding	19,989,548us-gaap_CommonStockSharesOutstanding	19,806,300us-gaap_CommonStockSharesOutstanding
ESOP debt guarantee: shares	0	8,369

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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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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