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Note 24 - Quarterly Financial Data (Unaudited) (Details) - Quarterly Financial Data (Unaudited) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
2014
Interest Income	$ 28,147,000us-gaap_InterestAndDividendIncomeOperating	$ 28,900,000us-gaap_InterestAndDividendIncomeOperating	$ 18,483,000us-gaap_InterestAndDividendIncomeOperating	$ 13,588,000us-gaap_InterestAndDividendIncomeOperating	$ 15,373,000us-gaap_InterestAndDividendIncomeOperating	$ 14,667,000us-gaap_InterestAndDividendIncomeOperating	$ 13,992,000us-gaap_InterestAndDividendIncomeOperating	$ 14,210,000us-gaap_InterestAndDividendIncomeOperating	$ 89,118,000us-gaap_InterestAndDividendIncomeOperating	$ 58,242,000us-gaap_InterestAndDividendIncomeOperating	$ 59,917,000us-gaap_InterestAndDividendIncomeOperating
Net Interest Income	25,173,000us-gaap_InterestIncomeExpenseNet	25,989,000us-gaap_InterestIncomeExpenseNet	15,552,000us-gaap_InterestIncomeExpenseNet	11,064,000us-gaap_InterestIncomeExpenseNet	12,695,000us-gaap_InterestIncomeExpenseNet	11,994,000us-gaap_InterestIncomeExpenseNet	11,312,000us-gaap_InterestIncomeExpenseNet	11,455,000us-gaap_InterestIncomeExpenseNet	77,778,000us-gaap_InterestIncomeExpenseNet	47,456,000us-gaap_InterestIncomeExpenseNet	46,701,000us-gaap_InterestIncomeExpenseNet
Net Income	$ 6,293,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic	$ 5,948,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic	$ 1,510,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic	$ 3,580,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic	$ 5,163,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic	$ 3,453,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic	$ 4,016,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic	$ 4,401,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic	$ 17,331,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic	$ 17,033,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic	$ 11,505,000us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Basic Earnings per Share (in Dollars per share)	$ 0.37us-gaap_EarningsPerShareBasic	$ 0.35us-gaap_EarningsPerShareBasic	$ 0.13us-gaap_EarningsPerShareBasic	$ 0.41us-gaap_EarningsPerShareBasic	$ 0.59us-gaap_EarningsPerShareBasic	$ 0.40us-gaap_EarningsPerShareBasic	$ 0.46us-gaap_EarningsPerShareBasic	$ 0.51us-gaap_EarningsPerShareBasic	$ 1.28us-gaap_EarningsPerShareBasic	$ 1.96us-gaap_EarningsPerShareBasic	$ 1.33us-gaap_EarningsPerShareBasic
Diluted Earnings per Share (in Dollars per share)	$ 0.37us-gaap_EarningsPerShareDiluted	$ 0.35us-gaap_EarningsPerShareDiluted	$ 0.13us-gaap_EarningsPerShareDiluted	$ 0.41us-gaap_EarningsPerShareDiluted	$ 0.59us-gaap_EarningsPerShareDiluted	$ 0.40us-gaap_EarningsPerShareDiluted	$ 0.46us-gaap_EarningsPerShareDiluted	$ 0.50us-gaap_EarningsPerShareDiluted	$ 1.28us-gaap_EarningsPerShareDiluted	$ 1.95us-gaap_EarningsPerShareDiluted	$ 1.30us-gaap_EarningsPerShareDiluted

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