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BORROWINGS, Preferred Securities (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2017 USD ($) Trust
Debt Instrument [Line Items] |
Number of unconsolidated subsidiary business trusts owned | Trust | 3
Percent ownership of unconsolidated subsidiary trusts | 100.00%
Preferred Debt [Member] | Community Statutory Trust III [Member] |
Terms of preferred securities for each trust [Abstract] |
Issuance date | Jul. 31, 2001
Par amount | $ 24.5
Variable interest rate basis | 3 month LIBOR
Effective interest rate | 4.96%
Maturity date | Jul. 31, 2031
Call price | Par
Preferred Debt [Member] | Community Statutory Trust III [Member] | LIBOR [Member] |
Terms of preferred securities for each trust [Abstract] |
Term of variable rate | 3 months
Variable interest rate, basis spread | 3.58%
Preferred Debt [Member] | Community Capital Trust IV [Member] |
Terms of preferred securities for each trust [Abstract] |
Issuance date | Dec. 08, 2006
Par amount | $ 75.0
Variable interest rate basis | 3 month LIBOR
Effective interest rate | 3.24%
Maturity date | Dec. 15, 2036
Call price | Par
Preferred Debt [Member] | Community Capital Trust IV [Member] | LIBOR [Member] |
Terms of preferred securities for each trust [Abstract] |
Term of variable rate | 3 months
Variable interest rate, basis spread | 1.65%
Preferred Debt [Member] | MBVT Statutory Trust I [Member] |
Terms of preferred securities for each trust [Abstract] |
Issuance date | Dec. 15, 2004
Par amount | $ 20.6
Variable interest rate basis | 3 month LIBOR
Effective interest rate | 3.54%
Maturity date | Dec. 15, 2034
Call price | Par
Preferred Debt [Member] | MBVT Statutory Trust I [Member] | LIBOR [Member] |
Terms of preferred securities for each trust [Abstract] |
Term of variable rate | 3 months
Variable interest rate, basis spread | 1.95%

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