Note 10 - Commitments and Off-Balance Sheet Risk (Details) - Exposure to Credit Losses (USD $)	Jun. 30, 2014	Dec. 31, 2013
Note 10 - Commitments and Off-Balance Sheet Risk (Details) - Exposure to Credit Losses [Line Items]
Contractual amounts of financial instruments with off-balance sheet risk	$ 633,028,000	$ 374,543,000
Unused lines of Credit [Member] | Commercial Portfolio Segment [Member]
Note 10 - Commitments and Off-Balance Sheet Risk (Details) - Exposure to Credit Losses [Line Items]
Contractual amounts of financial instruments with off-balance sheet risk	339,146,000	257,937,000
Unused lines of Credit [Member] | Retail 1-4 Family Mortgages [Member]
Note 10 - Commitments and Off-Balance Sheet Risk (Details) - Exposure to Credit Losses [Line Items]
Contractual amounts of financial instruments with off-balance sheet risk	60,439,000	23,429,000
Unused lines of Credit [Member] | Consumer Credit Card Financing Receivable [Member]
Note 10 - Commitments and Off-Balance Sheet Risk (Details) - Exposure to Credit Losses [Line Items]
Contractual amounts of financial instruments with off-balance sheet risk	9,180,000	9,013,000
Unused lines of Credit [Member] | Consumer Other Financing Receivable [Member]
Note 10 - Commitments and Off-Balance Sheet Risk (Details) - Exposure to Credit Losses [Line Items]
Contractual amounts of financial instruments with off-balance sheet risk	9,302,000	5,695,000
Loan Origination Commitments [Member]
Note 10 - Commitments and Off-Balance Sheet Risk (Details) - Exposure to Credit Losses [Line Items]
Contractual amounts of financial instruments with off-balance sheet risk	177,363,000	58,799,000
Standby Letters of Credit [Member]
Note 10 - Commitments and Off-Balance Sheet Risk (Details) - Exposure to Credit Losses [Line Items]
Contractual amounts of financial instruments with off-balance sheet risk	$ 37,598,000	$ 19,670,000