Note 5 - Summary of Accounts Payable, Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Accounts payable, trade	$ 7,790	$ 14,840
Accrued compensation	21,948	16,895
Accrued operating expenses	21,923	22,814
Total accounts payable, accrued expenses and other liabilities	$ 51,661	$ 54,549