Note 6 - Fair Value Measurements and Fair Values of Financial Instruments (Details) - Assets Measured at Fair Value (USD $) | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | $482,658,000 | $472,577,000 | ' | ' |
Servicing rights | 1,123,000 | 605,000 | ' | ' |
Nonrecurring fair value measurements | ' | ' | ' | ' |
Impaired loans with a valuation allowance | 9,889,000 | 2,710,000 | ' | ' |
Valuation allowance | 2,333,000 | 623,000 | ' | ' |
Foreclosed assets held for sale | 892,000 | 879,000 | ' | ' |
US Government Corporations and Agencies Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 0 | 0 | ' | ' |
US Government Corporations and Agencies Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 45,877,000 | 31,217,000 | ' | ' |
US Government Corporations and Agencies Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 0 | 0 | ' | ' |
US Government Corporations and Agencies Securities [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 45,877,000 | 31,217,000 | ' | ' |
Obligations of States and Political Subdivisions, Tax-exempt [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 0 | 0 | ' | ' |
Obligations of States and Political Subdivisions, Tax-exempt [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 128,426,000 | 137,020,000 | ' | ' |
Obligations of States and Political Subdivisions, Tax-exempt [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 0 | 0 | ' | ' |
Obligations of States and Political Subdivisions, Tax-exempt [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 128,426,000 | 137,020,000 | ' | ' |
Obligations of States and Political Subdivisions, Tax-exempt [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 128,426,000 | 137,020,000 | ' | ' |
Obligations of States and Political Subdivisions, Taxable [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 0 | 0 | ' | ' |
Obligations of States and Political Subdivisions, Taxable [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 34,471,000 | 24,817,000 | ' | ' |
Obligations of States and Political Subdivisions, Taxable [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 0 | 0 | ' | ' |
Obligations of States and Political Subdivisions, Taxable [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 34,471,000 | 24,817,000 | ' | ' |
Obligations of States and Political Subdivisions, Taxable [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 34,471,000 | 24,817,000 | ' | ' |
Mortgage-backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 0 | 0 | ' | ' |
Mortgage-backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 86,208,000 | 80,196,000 | ' | ' |
Mortgage-backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 0 | 0 | ' | ' |
Mortgage-backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 86,208,000 | 80,196,000 | ' | ' |
Mortgage-backed Securities [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 86,208,000 | 80,196,000 | ' | ' |
Collateralized Mortgage Obligations, Issued by U.S. Government Agencies [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 0 | 0 | ' | ' |
Collateralized Mortgage Obligations, Issued by U.S. Government Agencies [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 178,092,000 | 183,510,000 | ' | ' |
Collateralized Mortgage Obligations, Issued by U.S. Government Agencies [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 0 | 0 | ' | ' |
Collateralized Mortgage Obligations, Issued by U.S. Government Agencies [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 178,092,000 | 183,510,000 | ' | ' |
Collateralized Mortgage Obligations, Issued by U.S. Government Agencies [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 178,092,000 | 183,510,000 | ' | ' |
Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 0 | ' | ' | ' |
Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 660,000 | ' | ' | ' |
Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 0 | ' | ' | ' |
Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 660,000 | ' | ' | ' |
Collateralized Debt Obligations [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 660,000 | ' | ' | ' |
Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 0 | 0 | ' | ' |
Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 473,734,000 | 462,591,000 | ' | ' |
Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 0 | 1,613,000 | ' | ' |
Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 473,734,000 | 464,204,000 | ' | ' |
Debt Securities [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 473,734,000 | 464,204,000 | ' | ' |
Marketable Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 8,924,000 | 8,373,000 | ' | ' |
Marketable Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 0 | 0 | ' | ' |
Marketable Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 0 | 0 | ' | ' |
Marketable Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 8,924,000 | 8,373,000 | ' | ' |
Marketable Equity Securities [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 8,924,000 | 8,373,000 | ' | ' |
Trust Preferred Securities Issued by Individual Institutions [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | ' | 0 | ' | ' |
Trust Preferred Securities Issued by Individual Institutions [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | ' | 5,171,000 | ' | ' |
Trust Preferred Securities Issued by Individual Institutions [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | ' | 0 | ' | ' |
Trust Preferred Securities Issued by Individual Institutions [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | ' | 5,171,000 | ' | ' |
Trust Preferred Securities Issued by Individual Institutions [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | ' | 5,171,000 | ' | ' |
Collateralized Debt Obligations, Pooled Trust Preferred Securities - Senior Tranches [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | ' | 0 | ' | ' |
Collateralized Debt Obligations, Pooled Trust Preferred Securities - Senior Tranches [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | ' | 0 | ' | ' |
Collateralized Debt Obligations, Pooled Trust Preferred Securities - Senior Tranches [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | ' | 1,613,000 | ' | ' |
Collateralized Debt Obligations, Pooled Trust Preferred Securities - Senior Tranches [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | ' | 1,613,000 | ' | ' |
Collateralized Debt Obligations, Pooled Trust Preferred Securities - Senior Tranches [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | ' | 1,613,000 | ' | ' |
Other Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | ' | 0 | ' | ' |
Other Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | ' | 660,000 | ' | ' |
Other Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | ' | 0 | ' | ' |
Other Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | ' | 660,000 | ' | ' |
Other Collateralized Debt Obligations [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | ' | 660,000 | ' | ' |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 8,924,000 | 8,373,000 | ' | ' |
Servicing rights | 0 | 0 | ' | ' |
Total recurring fair value measurements | 8,924,000 | 8,373,000 | ' | ' |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 473,734,000 | 462,591,000 | ' | ' |
Servicing rights | 0 | 0 | ' | ' |
Total recurring fair value measurements | 473,734,000 | 462,591,000 | ' | ' |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 0 | 1,613,000 | ' | ' |
Servicing rights | 1,123,000 | 605,000 | ' | ' |
Total recurring fair value measurements | 1,123,000 | 2,218,000 | ' | ' |
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Available-for-sale securities | 482,658,000 | 472,577,000 | ' | ' |
Servicing rights | 1,123,000 | 605,000 | ' | ' |
Total recurring fair value measurements | 483,781,000 | 473,182,000 | ' | ' |
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' | ' |
Nonrecurring fair value measurements | ' | ' | ' | ' |
Impaired loans with a valuation allowance | 0 | 0 | ' | ' |
Valuation allowance | 0 | 0 | ' | ' |
Impaired loans, net | 0 | 0 | ' | ' |
Foreclosed assets held for sale | 0 | 0 | ' | ' |
Total nonrecurring fair value measurements | 0 | 0 | ' | ' |
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' | ' |
Nonrecurring fair value measurements | ' | ' | ' | ' |
Impaired loans with a valuation allowance | 0 | 0 | ' | ' |
Valuation allowance | 0 | 0 | ' | ' |
Impaired loans, net | 0 | 0 | ' | ' |
Foreclosed assets held for sale | 0 | 0 | ' | ' |
Total nonrecurring fair value measurements | 0 | 0 | ' | ' |
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' | ' |
Nonrecurring fair value measurements | ' | ' | ' | ' |
Impaired loans with a valuation allowance | 9,889,000 | 2,710,000 | ' | ' |
Valuation allowance | -2,333,000 | -623,000 | ' | ' |
Impaired loans, net | 7,556,000 | 2,087,000 | ' | ' |
Foreclosed assets held for sale | 892,000 | 879,000 | ' | ' |
Total nonrecurring fair value measurements | 8,448,000 | 2,966,000 | ' | ' |
Fair Value, Measurements, Nonrecurring [Member] | Estimate of Fair Value Measurement [Member] | ' | ' | ' | ' |
Nonrecurring fair value measurements | ' | ' | ' | ' |
Impaired loans with a valuation allowance | 9,889,000 | 2,710,000 | ' | ' |
Valuation allowance | -2,333,000 | -623,000 | ' | ' |
Impaired loans, net | 7,556,000 | 2,087,000 | ' | ' |
Foreclosed assets held for sale | 892,000 | 879,000 | ' | ' |
Total nonrecurring fair value measurements | 8,448,000 | 2,966,000 | ' | ' |
Fair Value, Inputs, Level 3 [Member] | ' | ' | ' | ' |
AVAILABLE-FOR-SALE SECURITIES: | ' | ' | ' | ' |
Total recurring fair value measurements | $1,123,000 | $2,218,000 | $5,743,000 | $7,604,000 |