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	$ 61	$ 0
Fair value ofequity-method investment	$ 33,240	$ 26,871
Par Value (in dollars per share)	$ 0.001	$ 0.001
Shares Authorized (in shares)	40,000,000us-gaap_CommonStockSharesAuthorized	40,000,000us-gaap_CommonStockSharesAuthorized
Shares Issued (in shares)	14,380,000us-gaap_CommonStockSharesIssued	14,220,000us-gaap_CommonStockSharesIssued
Shares Outstanding (in shares)	11,566,000us-gaap_CommonStockSharesOutstanding	11,406,000us-gaap_CommonStockSharesOutstanding
Treasury stock (in shares)	2,814,000us-gaap_TreasuryStockShares	2,814,000us-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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