Note 18 - Income Taxes - Summary of the Changes in the Amount of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Balance, beginning of year | $ 1,375 | $ 1,173 | $ 804 |
| Increases related to prior year tax positions | 365 | 364 | 369 |
| Decreases related to prior year tax positions | |||
| Increases related to current year tax positions | |||
| Settlements | |||
| Enacted tax rate change | 315 | ||
| Lapse of statute | (276) | (162) | |
| Balance, end of year | $ 1,779 | $ 1,375 | $ 1,173 |
| X | ||||||||||
- Definition Amount of increase in unrecognized tax benefits resulting from enacted tax rate change. No definition available.
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| X | ||||||||||
- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of increase in unrecognized tax benefits resulting from settlements with taxing authorities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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