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Borrowings and Borrowings Availability (Schedule of debt) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015
Borrowings | $ 271,394,000 | $ 186,394,000
Federal Home Loan Bank Term Note One [Member] |  |
Maturity date | Jan. 27, 2017 | Jan. 19, 2016
Borrowings | $ 20,000,000 |
Effective percentage | 0.61% |
Federal Home Loan Bank Term Note Two [Member] |  |
Maturity date | Jan. 30, 2017 | Jan. 29, 2016
Borrowings | $ 80,000,000 |
Effective percentage | 0.63% |
Federal Home Loan Bank Term Note Three [Member] |  |
Maturity date | Apr. 18, 2017 | Dec. 27, 2016
Borrowings | $ 50,000,000 |
Effective percentage | 0.70% |
Federal Home Loan Bank Term Note Four [Member] |  |
Maturity date | Dec. 26, 2017 | Dec. 26, 2017
Borrowings | $ 20,000,000 | $ 20,000,000
Effective percentage | 1.19% | 1.19%
Federal Home Loan Bank Term Note Five [Member] |  |
Maturity date | Dec. 29, 2017 |
Borrowings | $ 35,000,000 |
Effective percentage | 0.80% |
Federal Home Loan Bank Term Note Six [Member] |  |
Maturity date | Dec. 24, 2018 | Dec. 24, 2018
Borrowings | $ 20,000,000 | $ 20,000,000
Effective percentage | 1.57% | 1.57%
Trust Preferred Securities 1 [Member] |  |
Maturity date | Jan. 23, 2034 | Jan. 23, 2034
Borrowings | $ 20,620,000 | $ 20,620,000
Effective percentage | 3.59% | 3.02%
Variable rate description | 3.59% at 12/31/16 adjustable rate 3 month LIBOR + 2.70% | 3.02% at 12/31/15 adjustable rate 3 month LIBOR + 2.70%
Trust Preferred Securities 2 [Member] |  |
Maturity date | Jun. 15, 2036 | Jun. 15, 2036
Borrowings | $ 25,774,000 | $ 25,774,000
Effective percentage | 2.35% | 1.90%
Variable rate description | 2.35% at 12/31/16 adjustable rate 3 month LIBOR + 1.39% | 1.90% at 12/31/15 adjustable rate 3 month LIBOR + 1.39%
Total Borrowings [Member] |  |
Weighted average interest rate | 1.16% | 1.14%

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