Note 13 - Supplemental Cash Flow Information - Summary of Reconciliation of Cash and Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Cash and cash equivalents	$ 11,224	$ 21,228	$ 21,883
Restricted cash	11,927	1,917	1,811
Total cash, cash equivalents and restricted cash	$ 23,151	$ 23,145	$ 23,694	$ 37,825