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Note 1 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2019 USD ($) shares | Mar. 31, 2018 shares | Jan. 01, 2019 USD ($) | Dec. 31, 2018 USD ($)
Number of Reportable Segments | 2 |  |  |
Weighted Average Number of Shares Outstanding, Basic, Total | shares | 4,748,474 | 4,711,608 |  |
Weighted Average Number Diluted Shares Outstanding Adjustment, Total | shares | 0 | 0 |  |
Operating Lease, Right-of-Use Asset | $ 1,214 |  |  |
Operating Lease, Liability, Total | $ 1,214 |  |  |
Accounting Standards Update 2016-02 [Member] |  |  |  |
Operating Lease, Right-of-Use Asset |  |  | $ 1,280 |
Operating Lease, Liability, Total |  |  | $ 1,280 |

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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