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Note 13 - Shareholders' Equity (Details Textual) - USD ($) |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 15, 2010 | Aug. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Jul. 26, 2016 | Oct. 14, 2010
Stock Issued During Period, Shares, Acquisitions | 3,360,000 |  |  |  |  |  |
Stock Issued During Period at Purchase Price Per Share, Acquisition | $ 15 |  |  |  |  |  |
Stock Issued During Period, Value, Acquisitions | $ 50,400,000 |  |  |  |  |  |
Percentage of Shares Sold of Common Stock Issued and Outstanding | 87.60% |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share | $ 0.01 |  | $ 0.01 | $ 0.01 |  |  | $ 2
Common Stock, Shares Authorized | 100,000,000 |  | 100,000,000 | 100,000,000 |  |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased |  |  |  |  |  | 500,000 |
Treasury Stock, Shares, Acquired |  | 100 | 0 | 72,471 |  |  |
Treasury Stock Acquired, Average Cost Per Share |  | $ 17.10 |  | $ 14.04 |  |  |
Payments of Ordinary Dividends, Common Stock |  |  | $ 154,000 | $ 77,000 |  |  |
Common Stock, Dividends, Per Share, Declared |  |  |  |  | $ 0 |  |

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- Definition Common stock at a purchase price per share for aggregate purchase price + References No definition available. + Details
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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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