Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of TDR's and Difference Between the Outstanding Recorded Balance Pre-Modification and Post-Modification (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of TDR's and Difference Between the Outstanding Recorded Balance Pre-Modification and Post-Modification [Line Items]
Number of Contracts		13		67
Pre-modification Outstanding Recorded Investmen		$ 3,411		$ 22,488
Post-modification Outstanding Recorded Investment		2,557		19,740
1-4 Family [Member]
Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of TDR's and Difference Between the Outstanding Recorded Balance Pre-Modification and Post-Modification [Line Items]
Number of Contracts	0	4	1	31
Pre-modification Outstanding Recorded Investmen	0	452	193	3,666
Post-modification Outstanding Recorded Investment	0	439	200	3,643
Commercial Real Estate Other Receivable [Member]
Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of TDR's and Difference Between the Outstanding Recorded Balance Pre-Modification and Post-Modification [Line Items]
Number of Contracts	1		3
Pre-modification Outstanding Recorded Investmen	679		754
Post-modification Outstanding Recorded Investment	254		329
Consumer [Member]
Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of TDR's and Difference Between the Outstanding Recorded Balance Pre-Modification and Post-Modification [Line Items]
Number of Contracts	12	4	17	15
Pre-modification Outstanding Recorded Investmen	131	183	249	1,413
Post-modification Outstanding Recorded Investment	144	205	263	1,435
Construction Industry [Member]
Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of TDR's and Difference Between the Outstanding Recorded Balance Pre-Modification and Post-Modification [Line Items]
Number of Contracts	0	0	1	1
Pre-modification Outstanding Recorded Investmen	0	0	41	80
Post-modification Outstanding Recorded Investment	0	0	41	80
Commercial Business Other [Member] | Receivable Loans [Member]
Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of TDR's and Difference Between the Outstanding Recorded Balance Pre-Modification and Post-Modification [Line Items]
Number of Contracts	17		27
Pre-modification Outstanding Recorded Investmen	1,004		1,430
Post-modification Outstanding Recorded Investment	616		1,051
Commercial Business Other [Member]
Note 10 - Allowance for Loan Losses and Credit Quality Information (Details) - Financial Effects of TDR's and Difference Between the Outstanding Recorded Balance Pre-Modification and Post-Modification [Line Items]
Number of Contracts	4	2	5	4
Pre-modification Outstanding Recorded Investmen	194	211	193	471
Post-modification Outstanding Recorded Investment	$ 218	$ 211	$ 218	$ 471