Note 4 - Property and Equipment, Net |
9 Months Ended | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 30, 2019 |
Dec. 31, 2018 |
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| Notes to Financial Statements | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Property, Plant and Equipment Disclosure [Text Block] | Note 4. Property and Equipment, Net Property and equipment, net, consist of the following (in thousands):
Depreciation expense at December 31, 2018 and for the nine months ended September 30, 2018 and 2019 was $8,000, $6,000 and $5,000, respectively. |
Note 3. Property and Equipment, Net Property and equipment, net, consist of the following (in thousands):
Depreciation expense for the years ended December 31, 2017 and 2018 was $10,000 and $8,000, respectively. |
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