Loans and the Allowance for Loan Losses, Troubled Debt Restructuring (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2016 USD ($) Modification	Dec. 31, 2016 USD ($) Contract	Dec. 31, 2015 USD ($)	Dec. 31, 2015 USD ($) Modification	Dec. 31, 2015 USD ($) Contract
Financing Receivable, Modifications [Line Items]
Number of Modifications		12	12		7	7
Recorded Investment Prior to Modification	$ 1,517			$ 2,590
Recorded Investment After Modification	1,517			3,090
Current Investment	1,275	$ 1,275	$ 1,275	2,461	$ 2,461	$ 2,461
Principal forgiveness on all loans	0			0
Unfunded Commitments on TDRs	0	0	0	0	0	0
Mortgage Loans in Process of Foreclosure, Amount	10	$ 10	$ 10	53	$ 53	$ 53
Interest Rate Below Market Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Contract			12			5
Principal Forgiveness [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Contract			0			0
Extended Maturity [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Contract			0			0
Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Contract			0			0
Principal Forgiveness and Interest Rate Below Market Reduction [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Contract			0			0
Nonstandard Terms [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Contract			0			2
Total Mortgage Loans on Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Modification		9
Recorded Investment Prior to Modification	1,357
Recorded Investment After Modification	1,357
Current Investment	1,131	$ 1,131	$ 1,131
Residential 1-4 Family [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Modification		6
Recorded Investment Prior to Modification	1,061
Recorded Investment After Modification	1,061
Current Investment	992	$ 992	992
Recorded investment in defaulting TDRs	0			0
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Modification		1			5
Recorded Investment Prior to Modification	150			2,094
Recorded Investment After Modification	150			2,594
Current Investment	0	$ 0	0	2,400	$ 2,400	$ 2,400
Construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Modification		0			1
Recorded Investment Prior to Modification	0			435
Recorded Investment After Modification	0			435
Current Investment	0	$ 0	0	0	$ 0	0
Second Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Modification		1			1
Recorded Investment Prior to Modification	53			61
Recorded Investment After Modification	53			61
Current Investment	53	$ 53	53	$ 61	$ 61	$ 61
Equity Line of Credit [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Modification		1
Recorded Investment Prior to Modification	93
Recorded Investment After Modification	93
Current Investment	86	$ 86	86
Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Modification		1
Recorded Investment Prior to Modification	152
Recorded Investment After Modification	152
Current Investment	144	$ 144	144
Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Modification		2
Recorded Investment Prior to Modification	8
Recorded Investment After Modification	8
Current Investment	$ 0	$ 0	$ 0