Note 5 - Accrued Liabilities
|6 Months Ended|
Jun. 30, 2021
|Notes to Financial Statements|
|Accounts Payable and Accrued Liabilities Disclosure [Text Block]||
Accrued liabilities consisted of the following as of June 30, 2021 and December 31, 2020 (in thousands):
The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef