Note 13 - Income Taxes - Provisions (Benefits) for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Federal									$ 403	$ 252
State									237	136
Total current									640	388
Federal									6,064	3,551	367
State									1,052	820	919
Deferred tax valuation allowance									(897)	(120)	(21,856)
Total deferred									6,219	4,251	(20,570)
Total, amount	$ 2,192	$ 2,384	$ 847	$ 1,436	$ 972	$ 1,529	$ 1,253	$ 885	$ 6,859	$ 4,639	$ (20,570)