Fair Value Disclosures, Significant Assumptions (Details) - USD ($) $ in Thousands		Sep. 30, 2019	Dec. 31, 2018
Assets [Abstract]
Equity securities at fair value		$ 0	$ 393
Securities available for sale		439,592	427,926
Loans held for sale, carried at fair value		87,358	44,753
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
Equity securities at fair value			393
Securities available for sale		0	0
Derivatives		0	0
Liabilities [Abstract]
Derivatives		0	0
Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Equity securities at fair value			0
Securities available for sale		439,592	427,926
Derivatives		7,389	5,155
Liabilities [Abstract]
Derivatives		5,657	2,326
Significant Un-observable Inputs (Level 3) [Member]
Assets [Abstract]
Equity securities at fair value			0
Securities available for sale		0	0
Derivatives		0	0
Liabilities [Abstract]
Derivatives		0	0
Recurring Basis [Member]
Assets [Abstract]
Equity securities at fair value			393
Loans held for sale, carried at fair value		87,358	44,753
Capitalized mortgage loan servicing rights		16,906	21,400
Derivatives	[1]	7,389	5,155
Liabilities [Abstract]
Derivatives	[2]	5,657	2,326
Recurring Basis [Member] | U.S. Agency [Member]
Assets [Abstract]
Securities available for sale		15,283	20,014
Recurring Basis [Member] | U.S. Agency Residential Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		147,720	123,751
Recurring Basis [Member] | U.S. Agency Commercial Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		11,319	5,726
Recurring Basis [Member] | Private Label Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		31,826	29,419
Recurring Basis [Member] | Other Asset Backed [Member]
Assets [Abstract]
Securities available for sale		94,785	83,319
Recurring Basis [Member] | Obligations of States and Political Subdivisions [Member]
Assets [Abstract]
Securities available for sale		101,139	127,555
Recurring Basis [Member] | Corporate [Member]
Assets [Abstract]
Securities available for sale		33,678	34,309
Recurring Basis [Member] | Trust Preferred [Member]
Assets [Abstract]
Securities available for sale		1,820	1,819
Recurring Basis [Member] | Foreign Government [Member]
Assets [Abstract]
Securities available for sale		2,022	2,014
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
Equity securities at fair value			393
Loans held for sale, carried at fair value		0	0
Capitalized mortgage loan servicing rights		0	0
Derivatives	[1]	0	0
Liabilities [Abstract]
Derivatives	[2]	0	0
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Agency [Member]
Assets [Abstract]
Securities available for sale		0	0
Recurring Basis [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
Recurring Basis [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
Recurring Basis [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
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other Asset Backed [Member]
Assets [Abstract]
Securities available for sale		0	0
Recurring Basis [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
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Corporate [Member]
Assets [Abstract]
Securities available for sale		0	0
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Trust Preferred [Member]
Assets [Abstract]
Securities available for sale		0	0
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Foreign Government [Member]
Assets [Abstract]
Securities available for sale		0	0
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Equity securities at fair value			0
Loans held for sale, carried at fair value		87,358	44,753
Capitalized mortgage loan servicing rights		0	0
Derivatives	[1]	7,389	5,155
Liabilities [Abstract]
Derivatives	[2]	5,657	2,326
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Agency [Member]
Assets [Abstract]
Securities available for sale		15,283	20,014
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Agency Residential Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		147,720	123,751
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Agency Commercial Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		11,319	5,726
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Private Label Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		31,826	29,419
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Asset Backed [Member]
Assets [Abstract]
Securities available for sale		94,785	83,319
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Obligations of States and Political Subdivisions [Member]
Assets [Abstract]
Securities available for sale		101,139	127,555
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Corporate [Member]
Assets [Abstract]
Securities available for sale		33,678	34,309
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Trust Preferred [Member]
Assets [Abstract]
Securities available for sale		1,820	1,819
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Foreign Government [Member]
Assets [Abstract]
Securities available for sale		2,022	2,014
Recurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member]
Assets [Abstract]
Equity securities at fair value			0
Loans held for sale, carried at fair value		0	0
Capitalized mortgage loan servicing rights		16,906	21,400
Derivatives	[1]	0	0
Liabilities [Abstract]
Derivatives	[2]	0	0
Recurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | U.S. Agency [Member]
Assets [Abstract]
Securities available for sale		0	0
Recurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | U.S. Agency Residential Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		0	0
Recurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | U.S. Agency Commercial Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		0	0
Recurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Private Label Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		0	0
Recurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Other Asset Backed [Member]
Assets [Abstract]
Securities available for sale		0	0
Recurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Obligations of States and Political Subdivisions [Member]
Assets [Abstract]
Securities available for sale		0	0
Recurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Corporate [Member]
Assets [Abstract]
Securities available for sale		0	0
Recurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Trust Preferred [Member]
Assets [Abstract]
Securities available for sale		0	0
Recurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Foreign Government [Member]
Assets [Abstract]
Securities available for sale		0	0
Nonrecurring Basis [Member]
Assets [Abstract]
Loans held for sale, carried at fair value			41,471
Nonrecurring Basis [Member] | Impaired Loans [Member] | Commercial [Member] | Income Producing - Real Estate [Member]
Impaired loans [Abstract]
Loans receivable	[3]	115	217
Nonrecurring Basis [Member] | Impaired Loans [Member] | Commercial [Member] | Land, Land Development and Construction - Real Estate [Member]
Impaired loans [Abstract]
Loans receivable	[3]	87	106
Nonrecurring Basis [Member] | Impaired Loans [Member] | Commercial [Member] | Commercial and Industrial [Member]
Impaired loans [Abstract]
Loans receivable	[3]	706	2,243
Nonrecurring Basis [Member] | Impaired Loans [Member] | Mortgage [Member] | 1-4 Family [Member]
Impaired loans [Abstract]
Loans receivable	[3]	666	333
Nonrecurring Basis [Member] | Impaired Loans [Member] | Mortgage [Member] | Resort Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	60	572
Nonrecurring Basis [Member] | Impaired Loans [Member] | Mortgage [Member] | Home Equity - 1st Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	83
Nonrecurring Basis [Member] | Impaired Loans [Member] | Mortgage [Member] | Home Equity - 2nd Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	199
Nonrecurring Basis [Member] | Impaired Loans [Member] | Installment [Member] | Home Equity - 1st Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	9
Nonrecurring Basis [Member] | Impaired Loans [Member] | Installment [Member] | Home Equity - 2nd Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	70
Nonrecurring Basis [Member] | Impaired Loans [Member] | Installment [Member] | Boat Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	103
Nonrecurring Basis [Member] | Impaired Loans [Member] | Installment [Member] | Recreational Vehicle Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	1
Nonrecurring Basis [Member] | Impaired Loans [Member] | Installment [Member] | Other [Member]
Impaired loans [Abstract]
Loans receivable	[3]	86
Nonrecurring Basis [Member] | Other Real Estate [Member] | Mortgage [Member] | 1-4 Family [Member]
Impaired loans [Abstract]
Loans receivable	[4]	23	95
Nonrecurring Basis [Member] | Other Real Estate [Member] | Mortgage [Member] | Home Equity - 2nd Lien [Member]
Impaired loans [Abstract]
Loans receivable	[4]	57	59
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
Loans held for sale, carried at fair value			41,471
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Impaired Loans [Member] | Commercial [Member] | Income Producing - Real Estate [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0	0
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Impaired Loans [Member] | Commercial [Member] | Land, Land Development and Construction - Real Estate [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0	0
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Impaired Loans [Member] | Commercial [Member] | Commercial and Industrial [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0	0
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Impaired Loans [Member] | Mortgage [Member] | 1-4 Family [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0	0
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Impaired Loans [Member] | Mortgage [Member] | Resort Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0	0
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Impaired Loans [Member] | Mortgage [Member] | Home Equity - 1st Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Impaired Loans [Member] | Mortgage [Member] | Home Equity - 2nd Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Impaired Loans [Member] | Installment [Member] | Home Equity - 1st Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Impaired Loans [Member] | Installment [Member] | Home Equity - 2nd Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Impaired Loans [Member] | Installment [Member] | Boat Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Impaired Loans [Member] | Installment [Member] | Recreational Vehicle Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Impaired Loans [Member] | Installment [Member] | Other [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other Real Estate [Member] | Mortgage [Member] | 1-4 Family [Member]
Impaired loans [Abstract]
Loans receivable	[4]	0	0
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other Real Estate [Member] | Mortgage [Member] | Home Equity - 2nd Lien [Member]
Impaired loans [Abstract]
Loans receivable	[4]	0	0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Loans held for sale, carried at fair value			0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Impaired Loans [Member] | Commercial [Member] | Income Producing - Real Estate [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0	0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Impaired Loans [Member] | Commercial [Member] | Land, Land Development and Construction - Real Estate [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0	0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Impaired Loans [Member] | Commercial [Member] | Commercial and Industrial [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0	0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Impaired Loans [Member] | Mortgage [Member] | 1-4 Family [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0	0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Impaired Loans [Member] | Mortgage [Member] | Resort Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0	0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Impaired Loans [Member] | Mortgage [Member] | Home Equity - 1st Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Impaired Loans [Member] | Mortgage [Member] | Home Equity - 2nd Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Impaired Loans [Member] | Installment [Member] | Home Equity - 1st Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Impaired Loans [Member] | Installment [Member] | Home Equity - 2nd Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Impaired Loans [Member] | Installment [Member] | Boat Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Impaired Loans [Member] | Installment [Member] | Recreational Vehicle Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Impaired Loans [Member] | Installment [Member] | Other [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Real Estate [Member] | Mortgage [Member] | 1-4 Family [Member]
Impaired loans [Abstract]
Loans receivable	[4]	0	0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Real Estate [Member] | Mortgage [Member] | Home Equity - 2nd Lien [Member]
Impaired loans [Abstract]
Loans receivable	[4]	0	0
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member]
Assets [Abstract]
Loans held for sale, carried at fair value			0
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Commercial [Member] | Income Producing - Real Estate [Member]
Impaired loans [Abstract]
Loans receivable	[3]	115	217
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Commercial [Member] | Land, Land Development and Construction - Real Estate [Member]
Impaired loans [Abstract]
Loans receivable	[3]	87	106
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Commercial [Member] | Commercial and Industrial [Member]
Impaired loans [Abstract]
Loans receivable	[3]	706	2,243
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Mortgage [Member] | 1-4 Family [Member]
Impaired loans [Abstract]
Loans receivable	[3]	666	333
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Mortgage [Member] | Resort Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	60	572
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Mortgage [Member] | Home Equity - 1st Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	83
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Mortgage [Member] | Home Equity - 2nd Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	199
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Installment [Member] | Home Equity - 1st Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	9
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Installment [Member] | Home Equity - 2nd Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	70
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Installment [Member] | Boat Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	103
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Installment [Member] | Recreational Vehicle Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	1
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Installment [Member] | Other [Member]
Impaired loans [Abstract]
Loans receivable	[3]	86
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Other Real Estate [Member] | Mortgage [Member] | 1-4 Family [Member]
Impaired loans [Abstract]
Loans receivable	[4]	23	95
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Other Real Estate [Member] | Mortgage [Member] | Home Equity - 2nd Lien [Member]
Impaired loans [Abstract]
Loans receivable	[4]	$ 57	$ 59

[1] Included in accrued income and other assets.

[2] Included in accrued expenses and other liabilities.

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

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