Note 6 - Leases (Details Textual) - USD ($) |
3 Months Ended | |
|---|---|---|
Mar. 31, 2022 |
Mar. 31, 2021 |
|
| Lessee, Operating Lease, Remaining Lease Term (Year) | 10 years | |
| Operating Lease, Right-of-Use Asset | $ 17,000,000.0 | $ 17,900,000 |
| Operating Lease, Liability, Total | $ 17,700,000 | $ 18,500,000 |
| Operating Lease, Weighted Average Remaining Lease Term (Year) | 6 years 8 months 12 days | |
| Operating Lease, Weighted Average Discount Rate, Percent | 2.42% | |
| Operating Lease, Payments | $ 1,000,000.0 | $ 747,000 |
| X | ||||||||||
- Definition Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Present value of lessee's discounted obligation for lease payments from operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Weighted average discount rate for operating lease calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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