Note 4 - Accrued Liabilities
|6 Months Ended|
Jun. 30, 2017
|Notes to Financial Statements|
|Accounts Payable and Accrued Liabilities Disclosure [Text Block]||
Accrued liabilities consisted of the following (in thousands):
The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period.
Reference 1: http://www.xbrl.org/2003/role/presentationRef