Note 17 - Regulatory Matters (Detail) - Capital Amounts and Ratios for the Company and Bank (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Actual Amount, Bank	8.00%	8.00%
Ratio, Bank	10.00%	10.00%
Actual Amount, Bank	4.00%	4.00%
Ratio, Bank	6.00%	6.00%
Actual Amount, Bank	3.00%	3.00%
Ratio, Bank	5.00%	5.00%
Parent Company [Member]
Actual Amount, Company (in Dollars)	381,808	292,137
Ratio, Company	12.20%	11.84%
Actual Amount, Company (in Dollars)	338,138	254,850
Ratio, Company	10.80%	10.33%
Actual Amount, Company (in Dollars)	338,138	254,850
Ratio, Company	10.44%	8.21%
Bank [Member]
Actual Amount, Company (in Dollars)	350,609	273,383
Ratio, Company	11.25%	11.13%
Actual Amount, Company (in Dollars)	312,974	243,553
Ratio, Company	10.05%	9.92%
Actual Amount, Company (in Dollars)	312,974	243,553
Ratio, Company	9.70%	7.88%

The amount of total capital as defined in the regulations.

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