Note 8 - Leases (Details Textual) - USD ($) |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Lessee, Operating Lease, Number of Right-of-Use Leases | 6 | |||
| Lessee, Operating Lease, Number of Right-of-Use Leases, Subleased | 1 | |||
| Lessee, Operating Lease, Number Leases Exceeding One Year | 3 | |||
| Lessee, Operating Lease, Renewal Term (Year) | 5 years | |||
| Operating Lease, Weighted Average Discount Rate, Percent | 9.94% | |||
| Operating Lease, Weighted Average Remaining Lease Term (Year) | 4 years 25 days | |||
| Lessee, Finance Lease, Number of Leases | 0 | |||
| Short-term Lease Commitment, Amount | $ 0 | |||
| Operating Lease, Payments | $ 1,111,000 | $ 983,000 | $ 875,000 | |
| Operating Lease, Impairment Loss | $ 253,000 | |||
| 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. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of loss from impairment of right-of-use asset from operating lease. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| 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
|
| X | ||||||||||
- Definition Weighted average discount rate for operating lease calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| 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
|
| X | ||||||||||
- Definition Amount of short-term lease commitment. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Number of finance leases. No definition available.
|
| X | ||||||||||
- Definition Number of operating leases exceeding one year. No definition available.
|
| X | ||||||||||
- Definition Number of right-of-use operating leases. No definition available.
|
| X | ||||||||||
- Definition Number of right-of-use operating leases that have been subleased. No definition available.
|