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Note 14 - Leases (Details Textual) - USD ($) | Apr. 01, 2019 | Dec. 31, 2019 | Mar. 31, 2019
--- | --- | --- | ---
Operating Lease, Right-of-Use Asset | $ 3,795,000 | $ 3,495,000 | $ 0
Operating Lease, Liability, Total | 3,821,000 | $ 3,564,000 |
Maximum [Member] |  |  |
Lessee, Operating Lease, Renewal Term |  | 5 years |
Accounting Standards Update 2016-02 [Member] |  |  |
Operating Lease, Right-of-Use Asset | 3,800,000 |  | 3,795,000
Operating Lease, Liability, Total | 3,800,000 |  | $ 3,821,000
Operating Lease, Impairment Loss | $ 0 |  |

X
- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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X
- Definition Amount of loss from impairment of right-of-use asset from operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 25 -Paragraph 6 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=77888369&loc=SL77918431-209957 + Details
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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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X
- Definition Amount of lessee's right to use underlying asset under 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 (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Details
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