Fair Value Disclosures, Significant Assumptions (Details) - USD ($) $ in Thousands		Sep. 30, 2017	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Value of collateral-dependent impaired loans that will be reviewed by independent third party, minimum		$ 250
Value of collateral-dependent impaired loans that will be reviewed by special assets group, maximum		250
Assets [Abstract]
Trading securities		347	$ 410
Securities available for sale		548,865	610,616
Loans held for sale		47,611	35,946
U.S. Agency [Member]
Assets [Abstract]
Securities available for sale		26,626	28,988
U.S. Agency Residential Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		136,109	156,289
U.S. Agency Commercial Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		10,736	12,632
Private Label Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		26,990	34,727
Other Asset Backed [Member]
Assets [Abstract]
Securities available for sale		108,339	146,709
Obligations of States and Political Subdivisions [Member]
Assets [Abstract]
Securities available for sale		177,176	170,899
Corporate [Member]
Assets [Abstract]
Securities available for sale		58,000	56,180
Trust Preferred [Member]
Assets [Abstract]
Securities available for sale		2,800	2,579
Foreign Government [Member]
Assets [Abstract]
Securities available for sale		2,089	1,613
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
Trading securities		347	410
Securities available for sale		0	0
Derivatives		0	0
Liabilities [Abstract]
Derivatives		0	0
Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Trading securities		0	0
Securities available for sale		548,865	610,616
Derivatives		1,973	2,251
Liabilities [Abstract]
Derivatives		1,073	975
Significant Un-observable Inputs (Level 3) [Member]
Assets [Abstract]
Trading securities		0	0
Securities available for sale		0	0
Capitalized mortgage loan servicing rights		14,675	8,163
Derivatives		0	0
Liabilities [Abstract]
Derivatives		0	0
Fair Value, Measurements, Recurring [Member]
Assets [Abstract]
Trading securities		347	410
Loans held for sale		47,611	35,946
Capitalized mortgage loan servicing rights		14,675
Derivatives	[1]	1,973	2,251
Liabilities [Abstract]
Derivatives	[2]	1,073	975
Fair Value, Measurements, Recurring [Member] | U.S. Agency [Member]
Assets [Abstract]
Securities available for sale		26,626	28,988
Fair Value, Measurements, Recurring [Member] | U.S. Agency Residential Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		136,109	156,289
Fair Value, Measurements, Recurring [Member] | U.S. Agency Commercial Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		10,736	12,632
Fair Value, Measurements, Recurring [Member] | Private Label Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		26,990	34,727
Fair Value, Measurements, Recurring [Member] | Other Asset Backed [Member]
Assets [Abstract]
Securities available for sale		108,339	146,709
Fair Value, Measurements, Recurring [Member] | Obligations of States and Political Subdivisions [Member]
Assets [Abstract]
Securities available for sale		177,176	170,899
Fair Value, Measurements, Recurring [Member] | Corporate [Member]
Assets [Abstract]
Securities available for sale		58,000	56,180
Fair Value, Measurements, Recurring [Member] | Trust Preferred [Member]
Assets [Abstract]
Securities available for sale		2,800	2,579
Fair Value, Measurements, Recurring [Member] | Foreign Government [Member]
Assets [Abstract]
Securities available for sale		2,089	1,613
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
Trading securities		347	410
Loans held for sale		0	0
Capitalized mortgage loan servicing rights		0
Derivatives	[1]	0	0
Liabilities [Abstract]
Derivatives	[2]	0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Agency [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Agency Residential Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Agency Commercial Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Private Label Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other Asset Backed [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Obligations of States and Political Subdivisions [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Corporate [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Trust Preferred [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Foreign Government [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Trading securities		0	0
Loans held for sale		47,611	35,946
Capitalized mortgage loan servicing rights		0
Derivatives	[1]	1,973	2,251
Liabilities [Abstract]
Derivatives	[2]	1,073	975
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Agency [Member]
Assets [Abstract]
Securities available for sale		26,626	28,988
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Agency Residential Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		136,109	156,289
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Agency Commercial Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		10,736	12,632
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Private Label Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		26,990	34,727
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Asset Backed [Member]
Assets [Abstract]
Securities available for sale		108,339	146,709
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Obligations of States and Political Subdivisions [Member]
Assets [Abstract]
Securities available for sale		177,176	170,899
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Corporate [Member]
Assets [Abstract]
Securities available for sale		58,000	56,180
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Trust Preferred [Member]
Assets [Abstract]
Securities available for sale		2,800	2,579
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Foreign Government [Member]
Assets [Abstract]
Securities available for sale		2,089	1,613
Fair Value, Measurements, Recurring [Member] | Significant Un-observable Inputs (Level 3) [Member]
Assets [Abstract]
Trading securities		0	0
Loans held for sale		0	0
Capitalized mortgage loan servicing rights		14,675
Derivatives	[1]	0	0
Liabilities [Abstract]
Derivatives	[2]	0	0
Fair Value, Measurements, Recurring [Member] | Significant Un-observable Inputs (Level 3) [Member] | U.S. Agency [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Recurring [Member] | Significant Un-observable Inputs (Level 3) [Member] | U.S. Agency Residential Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Recurring [Member] | Significant Un-observable Inputs (Level 3) [Member] | U.S. Agency Commercial Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Recurring [Member] | Significant Un-observable Inputs (Level 3) [Member] | Private Label Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Recurring [Member] | Significant Un-observable Inputs (Level 3) [Member] | Other Asset Backed [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Recurring [Member] | Significant Un-observable Inputs (Level 3) [Member] | Obligations of States and Political Subdivisions [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Recurring [Member] | Significant Un-observable Inputs (Level 3) [Member] | Corporate [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Recurring [Member] | Significant Un-observable Inputs (Level 3) [Member] | Trust Preferred [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Recurring [Member] | Significant Un-observable Inputs (Level 3) [Member] | Foreign Government [Member]
Assets [Abstract]
Securities available for sale		0	0
Fair Value, Measurements, Nonrecurring [Member]
Assets [Abstract]
Capitalized mortgage loan servicing rights	[3]		8,163
Fair Value, Measurements, Nonrecurring [Member] | Impaired Loans [Member]
Commercial [Abstract]
Income producing - real estate	[4]	185	255
Land, land development & construction - real estate	[4]	11	54
Commercial and industrial	[4]	878	1,342
Mortgage [Abstract]
1-4 Family	[4]	509	361
Resort Lending	[4]	207
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate [Member]
Commercial [Abstract]
Income producing - real estate	[5],[6]		2,863
Land, land development & construction - real estate	[6]		176
Mortgage [Abstract]
1-4 Family	[6]	44	98
Resort Lending	[6]	5	133
Fair Value, Measurements, Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
Capitalized mortgage loan servicing rights	[3]		0
Fair Value, Measurements, Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Impaired Loans [Member]
Commercial [Abstract]
Income producing - real estate	[4]	0	0
Land, land development & construction - real estate	[4]	0	0
Commercial and industrial	[4]	0	0
Mortgage [Abstract]
1-4 Family	[4]	0	0
Resort Lending	[4]	0
Fair Value, Measurements, Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other Real Estate [Member]
Commercial [Abstract]
Income producing - real estate	[5],[6]		0
Land, land development & construction - real estate	[6]		0
Mortgage [Abstract]
1-4 Family	[6]	0	0
Resort Lending	[6]	0	0
Fair Value, Measurements, Nonrecurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Capitalized mortgage loan servicing rights	[3]		0
Fair Value, Measurements, Nonrecurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Impaired Loans [Member]
Commercial [Abstract]
Income producing - real estate	[4]	0	0
Land, land development & construction - real estate	[4]	0	0
Commercial and industrial	[4]	0	0
Mortgage [Abstract]
1-4 Family	[4]	0	0
Resort Lending	[4]	0
Fair Value, Measurements, Nonrecurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Real Estate [Member]
Commercial [Abstract]
Income producing - real estate	[5],[6]		2,863
Land, land development & construction - real estate	[6]		0
Mortgage [Abstract]
1-4 Family	[6]	0	0
Resort Lending	[6]	0	0
Fair Value, Measurements, Nonrecurring [Member] | Significant Un-observable Inputs (Level 3) [Member]
Assets [Abstract]
Capitalized mortgage loan servicing rights	[3]		8,163
Fair Value, Measurements, Nonrecurring [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member]
Commercial [Abstract]
Income producing - real estate	[4]	185	255
Land, land development & construction - real estate	[4]	11	54
Commercial and industrial	[4]	878	1,342
Mortgage [Abstract]
1-4 Family	[4]	509	361
Resort Lending	[4]	207
Fair Value, Measurements, Nonrecurring [Member] | Significant Un-observable Inputs (Level 3) [Member] | Other Real Estate [Member]
Commercial [Abstract]
Income producing - real estate	[5],[6]		0
Land, land development & construction - real estate	[6]		176
Mortgage [Abstract]
1-4 Family	[6]	44	98
Resort Lending	[6]	$ 5	$ 133

[1] Included in accrued income and other assets

[2] Included in accrued expenses and other liabilities

[3] Only includes servicing rights that are carried at fair value due to recognition of a valuation allowance.

[4] Only includes impaired loans with specific loss allocations based on collateral value.

[5] Level 2 valuation is based on a signed purchase agreement.

[6] Only includes other real estate with subsequent write downs to fair value.