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Note 2 - Share Repurchase Program (Details Textual) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Feb. 06, 2019 | Dec. 31, 2018 | Nov. 01, 2018
Treasury Stock, Shares, Acquired |  | 105,674 |
Treasury Stock, Value, Acquired, Cost Method |  | $ 742 |
Subsequent Event [Member] |  |  |
Treasury Stock, Shares, Acquired | 267,100 |  |
Treasury Stock, Acquired, Aggregate Number of Shares | 372,774 |  |
Treasury Stock, Acquired, Aggregate Value | $ 2,697 |  |
Maximum [Member] |  |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased |  |  | 2,500,000

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- Definition The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
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