Note 7 - Other Assets - Changes in the Net Carrying Amount of MSRs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Balance at January 1	$ 1,018	$ 1,131
Originations	177	528
Amortization	(274)	(641)
Balance at December 31	$ 921	$ 1,018