Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 54	$ 87
Common stock, par value (in dollars per share)	$ 0.04	$ 0.04
Common stock, shares authorized (in shares)	240,000,000us-gaap_CommonStockSharesAuthorized	240,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued (in shares)	70,875,998us-gaap_CommonStockSharesIssued	70,875,998us-gaap_CommonStockSharesIssued
Common stock, shares outstanding (in shares)	70,866,603us-gaap_CommonStockSharesOutstanding	70,866,603us-gaap_CommonStockSharesOutstanding
Treasury stock (in shares)	9,395us-gaap_TreasuryStockShares	9,395us-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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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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

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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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