Note 8 - Commitments and Contingencies (Details Textual) |
1 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
|
Sep. 30, 2018
USD ($)
|
Dec. 31, 2018
USD ($)
|
Dec. 31, 2017
USD ($)
|
Feb. 01, 2017
USD ($)
ft²
$ / item
|
|
| Operating Leases, Rent Expense, Total | $ 358,000 | $ 442,000 | ||
| Sublease Agreement for Relocation of Headquarters [Member] | ||||
| Area of Real Estate Property | ft² | 12,400 | |||
| Operating Leases, Monthly Rent Per Rentable Square Foot During First Year | $ / item | 20.5 | |||
| Operating Leases, Monthly Rent Per Rentable Square Foot During Second Year | $ / item | 21.12 | |||
| Operating Leases, Monthly Rent Per Rentable Square Foot During Third Year | $ / item | 21.75 | |||
| Security Deposit | $ 22,000 | |||
| Operating Leases, Allowance for Certain Improvements | $ 88,000 | |||
| Noncancelable Operating Lease Agreement for Office Equipment [Member] | ||||
| Lessee, Operating Lease, Term of Contract | 3 years | |||
| Operating Leases, Monthly Payment | $ 3,000 | |||
| X | ||||||||||
- Definition Area of a real estate property. No definition available.
|
| X | ||||||||||
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. No definition available.
|
| X | ||||||||||
- Definition Term of lessee's 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
|
| X | ||||||||||
- Definition The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Represents information about allowance amount for certain tenant improvements related to engineering, design and construction of Sublease Premises. No definition available.
|
| X | ||||||||||
- Definition Represents the amount of monthly payment under operating lease agreement. No definition available.
|
| X | ||||||||||
- Definition Represents the monthly base rent per rentable square foot of the Sublease Premises during the first year. No definition available.
|
| X | ||||||||||
- Definition Represents the monthly base rent per rentable square foot of the Sublease Premises during the second year. No definition available.
|
| X | ||||||||||
- Definition Represents the monthly base rent per rentable square foot of the Sublease Premises during the third year. No definition available.
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
|