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Borrowings (Advances from the Federal Home Loan Bank) (Details) - USD ($)	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Advances From Federal Home Loan Banks [Line Items]
Borrowings	$ 488,043,000	$ 328,748,000
Two Million [Member]
Advances From Federal Home Loan Banks [Line Items]
Borrowings	$ 2,087,000
FHLB, Weighted Average Interest Rate	2.92%
Settlement Date	Jun. 08, 2018
Maturity Date	Jun. 08, 2023
Thirty Four Million [Member]
Advances From Federal Home Loan Banks [Line Items]
Borrowings	$ 33,964,000
FHLB, Weighted Average Interest Rate	2.32%
Settlement Date	Sep. 04, 2018
Maturity Date	Oct. 01, 2018
Nine Million [Member]
Advances From Federal Home Loan Banks [Line Items]
Borrowings	$ 8,953,000
FHLB, Weighted Average Interest Rate	2.59%
Settlement Date	Jul. 19, 2013
Maturity Date	Jul. 20, 2020
Sixteen Million [Member]
Advances From Federal Home Loan Banks [Line Items]
Borrowings	$ 16,222,000
FHLB, Weighted Average Interest Rate	2.92%
Settlement Date	Jul. 13, 2018
Maturity Date	Jul. 13, 2023
Twelve Millions [Member]
Advances From Federal Home Loan Banks [Line Items]
Borrowings	$ 12,152,000
FHLB, Weighted Average Interest Rate	2.94%
Settlement Date	May 09, 2018
Maturity Date	May 09, 2023
Federal Home Loan Bank Advances [Member]
Advances From Federal Home Loan Banks [Line Items]
Borrowings	$ 73,378,000
FHLB, Weighted Average Interest Rate	2.61%

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Maturity date of FHLB advances.

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Date the FHLB advances were made.

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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13,16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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States the interest rate applicable to Federal Home Loan Bank advances outstanding as of the Balance Sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822

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