Note 6 - Investments Schedule of Unrealized Losses (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014 security	Dec. 31, 2013 security
Schedule of Securities With Unrealized Losses
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses	$ 0	$ 0
Continuous Loss Position Less Than Twelve Months
Number of Securities	26	5
Fair value HTM And AFS state and municipal obligations	89,695	19,903
Unrealized losses AFS And HTM state and municipal obligations	607	99
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities	3	4
Fair value HTM And AFS state and municipal obligations	8,339	8,480
Unrealized Losses AFS And HTM state and municipal obligations	896	1,018
Continuous Loss Position, Total
Number of securities	29	9
Fair Value HTM And AFS state and municipal obligations	98,034	28,383
Unrealized losses AFS and HTM state and municipal obligations	1,503	1,117
US government and agency securities
Continuous Loss Position Less Than Twelve Months
Number of Securities	1	1
Fair value available-for-sale securities	5,417	5,401
AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLossesAccumulatedInAOCI	47	57
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities	0	0
Fair value available-for-sale securities	0	0
AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAccumulatedInAOCI	0	0
Continuous Loss Position, Total
Number of securities	1	1
Fair value available-for-sale securities	5,417	5,401
AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLossesAccumulatedInAOCI	47	57
State and municipal obligations
Continuous Loss Position Less Than Twelve Months
Number of Securities	1	4
Fair value HTM And AFS state and municipal obligations	2	14,502
Unrealized losses AFS And HTM state and municipal obligations	4	42
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities	1	2
Fair value HTM And AFS state and municipal obligations	5,389	5,514
Unrealized Losses AFS And HTM state and municipal obligations	349	534
Continuous Loss Position, Total
Number of securities	2	6
Fair Value HTM And AFS state and municipal obligations	5,391	20,016
Unrealized losses AFS and HTM state and municipal obligations	353	576
Corporate bonds and notes
Continuous Loss Position Less Than Twelve Months
Number of Securities	10	0
Fair value available-for-sale securities	31,135	0
AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLossesAccumulatedInAOCI	223	0
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities	2	2
Fair value available-for-sale securities	2,950	2,966
AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAccumulatedInAOCI	547	484
Continuous Loss Position, Total
Number of securities	12	2
Fair value available-for-sale securities	34,085	2,966
AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLossesAccumulatedInAOCI	770	484
Other ABS
Continuous Loss Position Less Than Twelve Months
Number of Securities	8
Fair value available-for-sale securities	46,709
AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLossesAccumulatedInAOCI	125
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities	0
Fair value available-for-sale securities	0
AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAccumulatedInAOCI	0
Continuous Loss Position, Total
Number of securities	8
Fair value available-for-sale securities	46,709
AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLossesAccumulatedInAOCI	125
Foreign government securities
Continuous Loss Position Less Than Twelve Months
Number of Securities	6
Fair value available-for-sale securities	6,432
AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLossesAccumulatedInAOCI	208
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities	0
Fair value available-for-sale securities	0
AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAccumulatedInAOCI	0
Continuous Loss Position, Total
Number of securities	6
Fair value available-for-sale securities	6,432
AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLossesAccumulatedInAOCI	$ 208