Note 7 - Leases - Operating Lease Costs (Details) - USD ($) |
3 Months Ended | 6 Months Ended | |
|---|---|---|---|
Jan. 02, 2019 |
Jun. 30, 2019 |
Jun. 30, 2019 |
|
| Operating lease costs | $ 340,000 | $ 680,000 | |
| Sublease income | (150,000) | (296,000) | |
| Net lease costs | 190,000 | 384,000 | |
| Operating cash flows used for operating leases | 308,000 | 613,000 | |
| Transfer of tenant improvement allowance to sublease | $ 200,000 | 242,000 | |
| Right-of-use assets obtained in exchange for new operating lease liabilities | $ 4,730,000 | ||
| Weighted-average remaining term – operating lease (Year) | 4 years 142 days | 4 years 142 days | |
| Weighted-average discount rate – operating lease | 11.72% | 11.72% |
| X | ||||||||||
- Definition Amount of tenant incentive allowance transferred from an operating lease to a sublease. No definition available.
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| X | ||||||||||
- Definition Amount of lease cost recognized by lessee for lease contract. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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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 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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| X | ||||||||||
- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of sublease income excluding finance and operating lease expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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