Note 5 - Fair Value Measurements and Fair Values of Financial Instruments (Details) - Reconciliation of Activity for Level 3 Assets Measured at Fair Value on a Recurring Basis - Fair Value, Inputs, Level 3 [Member] - Servicing Rights Asset [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Servicing rights balance, beginning of period	$ 1,195	$ 1,268	$ 1,281	$ 1,123
Issuances of servicing rights	47	66	78	106
Unrealized losses included in earnings	(33)	(53)	(150)	52
Servicing rights balance, end of period	$ 1,209	$ 1,281	$ 1,209	$ 1,281