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Note 21 - Regulatory Matters (Details) - Actual Capital Levels and Minimum Levels - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Consolidated Entities [Member]    
Total capital (to risk weighted assets)    
Total capital (to risk weighted assets), actual amount $ 345,539 $ 334,793
Total capital (to risk weighted assets), actual ratio 13.50% 14.40%
Total capital (to risk weighted assets), minimum required for capital adequacy purposes amount $ 205,602 $ 185,553
Total capital (to risk weighted assets), minimum required for capital adequacy purposes ratio 8.00% 8.00%
Total capital (to risk weighted assets), minimum required to be well capitalized under prompt corrective action regulations amount
Total capital (to risk weighted assets), minimum required to be well capitalized under prompt corrective action regulations, ratio
Tier 1 capital (to risk weighted assets)    
Tier 1 capital (to risk weighted assets), actual amount $ 329,858 $ 314,752
Tier 1 capital (to risk weighted assets), actual ratio 12.80% 13.60%
Tier 1 capital (to risk weighted assets), minimum required for capital adequacy purposes amount $ 102,801 $ 92,777
Tier 1 capital (to risk weighted assets), minimum required for capital adequacy purposes ratio 4.00% 4.00%
Tier 1 capital (to risk weighted assets), minimum required to be well capitalized under prompt corrective action regulations amount
Tier 1 capital (to risk weighted assets), minimum required to be well capitalized under prompt corrective action regulations, ratio
Common equity (to risk weighted assets)    
Common equity tier 1 (to risk weighted assets), actual amount $ 280,171  
Common equity tier 1 (to risk weighted assets), actual ratio 10.90%  
Common equity tier 1 (to risk weighted assets), minimum required for capital adequacy purposes amount $ 115,804  
Common equity tier 1 (to risk weighted assets), minimum required for capital adequacy purposes ratio 4.50%  
Common equity tier 1 (to risk weighted assets), minimum required to be well capitalized under prompt corrective action regulations amount  
Common equity tier 1 (to risk weighted assets), minimum required to be well capitalized under prompt corrective action regulations, ratio  
Tier 1 capital (to average assets)    
Tier 1 capital (to average assets), actual amount $ 329,858 $ 314,752
Tier 1 capital (to average assets), actual ratio 11.60% 11.20%
Tier 1 capital (to average assets), minimum required for capital adequacy purposes amount $ 114,138 $ 112,949
Tier 1 capital (to risk average assets), minimum required for capital adequacy purposes ratio 4.00% 4.00%
Tier 1 capital (to risk average assets), minimum required to be well capitalized under prompt corrective action regulations amount
Tier 1 capital (to risk average assets), minimum required to be well capitalized under prompt corrective action regulations, ratio
Bank [Member]    
Total capital (to risk weighted assets)    
Total capital (to risk weighted assets), actual amount $ 347,433 $ 332,749
Total capital (to risk weighted assets), actual ratio 13.50% 14.40%
Total capital (to risk weighted assets), minimum required for capital adequacy purposes amount $ 205,624 $ 185,309
Total capital (to risk weighted assets), minimum required for capital adequacy purposes ratio 8.00% 8.00%
Total capital (to risk weighted assets), minimum required to be well capitalized under prompt corrective action regulations amount $ 257,030 $ 231,636
Total capital (to risk weighted assets), minimum required to be well capitalized under prompt corrective action regulations, ratio 10.00% 10.00%
Tier 1 capital (to risk weighted assets)    
Tier 1 capital (to risk weighted assets), actual amount $ 331,752 $ 312,708
Tier 1 capital (to risk weighted assets), actual ratio 12.90% 13.50%
Tier 1 capital (to risk weighted assets), minimum required for capital adequacy purposes amount $ 102,812 $ 92,655
Tier 1 capital (to risk weighted assets), minimum required for capital adequacy purposes ratio 4.00% 4.00%
Tier 1 capital (to risk weighted assets), minimum required to be well capitalized under prompt corrective action regulations amount $ 154,218 $ 138,982
Tier 1 capital (to risk weighted assets), minimum required to be well capitalized under prompt corrective action regulations, ratio 6.00% 6.00%
Common equity (to risk weighted assets)    
Common equity tier 1 (to risk weighted assets), actual amount $ 331,752  
Common equity tier 1 (to risk weighted assets), actual ratio 12.90%  
Common equity tier 1 (to risk weighted assets), minimum required for capital adequacy purposes amount $ 115,664  
Common equity tier 1 (to risk weighted assets), minimum required for capital adequacy purposes ratio 4.50%  
Common equity tier 1 (to risk weighted assets), minimum required to be well capitalized under prompt corrective action regulations amount $ 167,070  
Common equity tier 1 (to risk weighted assets), minimum required to be well capitalized under prompt corrective action regulations, ratio 6.50%  
Tier 1 capital (to average assets)    
Tier 1 capital (to average assets), actual amount $ 331,752 $ 312,708
Tier 1 capital (to average assets), actual ratio 11.60% 11.10%
Tier 1 capital (to average assets), minimum required for capital adequacy purposes amount $ 114,280 $ 112,856
Tier 1 capital (to risk average assets), minimum required for capital adequacy purposes ratio 4.00% 4.00%
Tier 1 capital (to risk average assets), minimum required to be well capitalized under prompt corrective action regulations amount $ 142,850 $ 141,070
Tier 1 capital (to risk average assets), minimum required to be well capitalized under prompt corrective action regulations, ratio 5.00% 5.00%