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Note 3 - Loans and Allowance for Loan Losses - Loans Modified as Troubled Debt Restructurings (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) | Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($)
Originated Loan [Member] |  |  |  |
Number of Contracts | 6 | 6 | 12 | 20
Pre- Modification Recorded Principal Balance | $ 5,402,000 | $ 1,907,000 | $ 7,497,000 | $ 5,966,000
Post- Modification Recorded Principal Balance | $ 5,248,000 | $ 1,907,000 | $ 7,437,000 | $ 6,146,000
Acquired Loan [Member] |  |  |  |
Number of Contracts | 3 | 6 | 14 | 16
Pre- Modification Recorded Principal Balance | $ 195,000 | $ 1,551,000 | $ 437,000 | $ 2,687,000
Post- Modification Recorded Principal Balance | $ 191,000 | $ 1,551,000 | $ 433,000 | $ 2,688,000
Commercial Portfolio Segment [Member] | Originated Loan [Member] |  |  |  |
Number of Contracts | 6 | 5 | 11 | 13
Pre- Modification Recorded Principal Balance | $ 5,402,000 | $ 1,839,000 | $ 7,447,000 | $ 5,309,000
Post- Modification Recorded Principal Balance | $ 5,248,000 | $ 1,839,000 | $ 7,387,000 | $ 5,488,000
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Commercial and Industrial [Member] |  |  |  |
Number of Contracts | 5 | 3 | 9 | 9
Pre- Modification Recorded Principal Balance | $ 3,118,000 | $ 1,362,000 | $ 4,186,000 | $ 4,114,000
Post- Modification Recorded Principal Balance | $ 2,964,000 | $ 1,362,000 | $ 4,126,000 | $ 4,293,000
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Pre- Modification Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Post- Modification Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Real Estate Owner Occupied Loan [Member] |  |  |  |
Number of Contracts | 1 | 2 | 2 | 4
Pre- Modification Recorded Principal Balance | $ 2,284,000 | $ 477,000 | $ 3,261,000 | $ 1,195,000
Post- Modification Recorded Principal Balance | $ 2,284,000 | $ 477,000 | $ 3,261,000 | $ 1,195,000
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Pre- Modification Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Post- Modification Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Pre- Modification Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Post- Modification Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] |  |  |  |
Number of Contracts | 2 | 3 | 2 | 6
Pre- Modification Recorded Principal Balance | $ 183,000 | $ 1,410,000 | $ 183,000 | $ 2,246,000
Post- Modification Recorded Principal Balance | $ 179,000 | $ 1,410,000 | $ 179,000 | $ 2,245,000
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Commercial and Industrial [Member] |  |  |  |
Number of Contracts | 1 | 1 | 1 | 2
Pre- Modification Recorded Principal Balance | $ 33,000 | $ 282,000 | $ 33,000 | $ 399,000
Post- Modification Recorded Principal Balance | $ 29,000 | $ 282,000 | $ 29,000 | $ 399,000
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 1
Pre- Modification Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 38,000
Post- Modification Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 38,000
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Real Estate Owner Occupied Loan [Member] |  |  |  |
Number of Contracts | 1 | 0 | 1 | 0
Pre- Modification Recorded Principal Balance | $ 150,000 | $ 0 | $ 150,000 | $ 0
Post- Modification Recorded Principal Balance | $ 150,000 | $ 0 | $ 150,000 | $ 0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |  |
Number of Contracts | 0 | 1 | 0 | 2
Pre- Modification Recorded Principal Balance | $ 0 | $ 64,000 | $ 0 | $ 745,000
Post- Modification Recorded Principal Balance | $ 0 | $ 64,000 | $ 0 | $ 744,000
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |  |  |
Number of Contracts | 0 | 1 | 0 | 1
Pre- Modification Recorded Principal Balance | $ 0 | $ 1,064,000 | $ 0 | $ 1,064,000
Post- Modification Recorded Principal Balance | $ 0 | $ 1,064,000 | $ 0 | $ 1,064,000
Retail Portfolio Segment [Member] | Originated Loan [Member] |  |  |  |
Number of Contracts | 0 | 1 | 1 | 7
Pre- Modification Recorded Principal Balance | $ 0 | $ 68,000 | $ 50,000 | $ 657,000
Post- Modification Recorded Principal Balance | $ 0 | $ 68,000 | $ 50,000 | $ 658,000
Retail Portfolio Segment [Member] | Originated Loan [Member] | Home Equity and Other [Member] |  |  |  |
Number of Contracts | 0 | 1 | 1 | 7
Pre- Modification Recorded Principal Balance | $ 0 | $ 68,000 | $ 50,000 | $ 657,000
Post- Modification Recorded Principal Balance | $ 0 | $ 68,000 | $ 50,000 | $ 658,000
Retail Portfolio Segment [Member] | Originated Loan [Member] | One to Four Family Mortgages [Member] |  |  |  |
Number of Contracts | 0 | 0 | 0 | 0
Pre- Modification Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Post- Modification Recorded Principal Balance | $ 0 | $ 0 | $ 0 | $ 0
Retail Portfolio Segment [Member] | Acquired Loan [Member] |  |  |  |
Number of Contracts | 1 | 3 | 12 | 10
Pre- Modification Recorded Principal Balance | $ 12,000 | $ 141,000 | $ 254,000 | $ 441,000
Post- Modification Recorded Principal Balance | $ 12,000 | $ 141,000 | $ 254,000 | $ 443,000
Retail Portfolio Segment [Member] | Acquired Loan [Member] | Home Equity and Other [Member] |  |  |  |
Number of Contracts | 0 | 2 | 10 | 7
Pre- Modification Recorded Principal Balance | $ 0 | $ 90,000 | $ 217,000 | $ 256,000
Post- Modification Recorded Principal Balance | $ 0 | $ 90,000 | $ 218,000 | $ 258,000
Retail Portfolio Segment [Member] | Acquired Loan [Member] | One to Four Family Mortgages [Member] |  |  |  |
Number of Contracts | 1 | 1 | 2 | 3
Pre- Modification Recorded Principal Balance | $ 12,000 | $ 51,000 | $ 37,000 | $ 185,000
Post- Modification Recorded Principal Balance | $ 12,000 | $ 51,000 | $ 36,000 | $ 185,000

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