Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Allowance for doubtful accounts (in Dollars)	$ 149	$ 149
Common stock, par value (in Dollars per share)	$ 0.001	$ 0.001
Common stock, authorized	200,000,000us-gaap_CommonStockSharesAuthorized	200,000,000us-gaap_CommonStockSharesAuthorized
Common stock, issued	24,844,646us-gaap_CommonStockSharesIssued	24,685,604us-gaap_CommonStockSharesIssued
Common stock, outstanding	24,844,646us-gaap_CommonStockSharesOutstanding	24,685,604us-gaap_CommonStockSharesOutstanding

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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