Note 3 - Revenue Disclosures - Revenue Related to Performance Obligations (Details) $ in Thousands |
Dec. 31, 2018
USD ($)
|
|---|---|
| Revenue expected to be recognized | $ 13,609 |
| X | ||||||||||
- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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