Note 2 - Impact of Adoption of ASC 842 (Details Textual) - USD ($) $ in Thousands |
Mar. 31, 2019 |
Dec. 31, 2018 |
Dec. 30, 2018 |
|---|---|---|---|
| Operating Lease, Right-of-Use Asset | $ 4,904 | $ 5,452 | |
| Operating Lease, Liability, Total | $ 5,408 | 5,915 | |
| Prepaid Rent | $ 463 |
| 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 lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of asset related to consideration paid in advance for rent that provides economic benefits within a future period of one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|