Note 11 - Related Party Transactions (Details Textual)
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12 Months Ended |
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Dec. 01, 2016
USD ($)
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Mar. 01, 2016
USD ($)
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Jun. 30, 2015
USD ($)
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Dec. 31, 2016
USD ($)
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Dec. 31, 2015
USD ($)
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Dec. 31, 2014
USD ($)
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Jun. 30, 2016 |
Jul. 01, 2015 |
| Loans and Leases Receivable, Net Amount |
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$ 725,860,000
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$ 724,926,000
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| Subordinated Debt |
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$ 14,000,000
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10,000,000
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$ 14,000,000
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$ 25,000,000
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| Number of Noteholders Electing to Sell Subordinated Notes |
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7
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| Subordinated Notes of Nonrelated Parties Purchased by Group |
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$ 10,000,000
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| Repayments of Subordinated Debt |
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$ 11,000,000
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| Subordinated Liabilities, Extinguished |
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4,000,000
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11,000,000
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| Related Party Transaction, Interest Paid |
$ 4,000,000
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| Related Party Transaction, Payments of Previously Deferred and Accrued Interest |
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$ 10,800,000
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| Subordinated Debt [Member] |
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| Debt Instrument, Interest Rate, Stated Percentage |
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9.00%
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9.00%
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4.50%
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| Percent of Principal Amount Outstanding, Prepayment |
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44.00%
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| Repayments of Subordinated Debt |
4,000,000
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| Director [Member] |
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| Loans and Leases Receivable, Net Amount |
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381
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| Related Party Transaction, Amount of Participation Interest |
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5,200,000
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| Related Party Transaction, Amount of Participation Interest Outstanding |
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$ 4,400,000
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| Director [Member] | Annual Servicing Fee on Participation Balance [Member] |
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| Related Party Transaction, Rate |
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0.25%
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| Director [Member] | Line of Credit [Member] | Commercial Loan [Member] |
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| Loans and Leases Receivable, Net Amount |
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$ 11,000,000
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| Directors, Executive Officers and Their Related Parties [Member] |
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| Related Party Deposit Liabilities |
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119,300,000
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106,100,000
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| Related Party Transactions, Interest Paid on Deposits |
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196,000
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276,000
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97,000
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| Related Party Transaction, Expenses from Transactions with Related Party |
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2,600,000
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2,100,000
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$ 2,700,000
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| Related Party Transactions, Subordinated Debt |
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6,200,000
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8,600,000
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| Subordinated Liabilities, Extinguished |
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$ 6,800,000
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| Related Party Transaction, Interest Paid |
$ 2,500,000
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395,000
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233,000
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| Related Party Transaction, Payments of Previously Deferred and Accrued Interest |
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$ 3,900,000
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| Interest Expense, Related Party |
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386,000
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606,000
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| Related Party Transactions Interest Accrued and Unpaid |
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$ 24,000
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$ 3,900,000
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| Related Party Noteholders [Member] |
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| Debt Instrument, Face Amount |
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6,400,000
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| Repayments of Subordinated Debt |
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11,000,000
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| Subordinated Liabilities, Additions |
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$ 6,400,000
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