Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Allowances for contract receivables	$ 2,077	$ 2,243
Allowances for employee advances and miscellaneous receivables	626	692
Accumulated amortization on intangible assets	$ 34,306	$ 33,973
Common stock, par value (usd per share)	$ 0us-gaap_CommonStockNoParValue	$ 0us-gaap_CommonStockNoParValue
Common stock, stated value per share (usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (shares)	50,000,000us-gaap_CommonStockSharesAuthorized	50,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued (shares)	25,654,992us-gaap_CommonStockSharesIssued	26,762,861us-gaap_CommonStockSharesIssued
Common stock, shares outstanding (shares)	25,654,992us-gaap_CommonStockSharesOutstanding	26,762,861us-gaap_CommonStockSharesOutstanding

Allowances for employee advances and miscellaneous receivables.

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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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Face amount per share of no-par value common stock.

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Face amount or stated value per share of common stock.

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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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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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