Fair Value Disclosures, Significant Assumptions (Details) - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018
Assets [Abstract]
Equity securities at fair value		$ 0	$ 393
Securities available for sale		461,531	427,926
Loans held for sale, carried at fair value		43,098	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		461,531	427,926
Derivatives		4,705	5,155
Liabilities [Abstract]
Derivatives		2,219	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		43,098	44,753
Capitalized mortgage loan servicing rights		19,909	21,400
Derivatives	[1]	4,705	5,155
Liabilities [Abstract]
Derivatives	[2]	2,219	2,326
Recurring Basis [Member] | U.S. Agency [Member]
Assets [Abstract]
Securities available for sale		18,129	20,014
Recurring Basis [Member] | U.S. Agency Residential Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		142,038	123,751
Recurring Basis [Member] | U.S. Agency Commercial Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		11,313	5,726
Recurring Basis [Member] | Private Label Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		33,092	29,419
Recurring Basis [Member] | Other Asset Backed [Member]
Assets [Abstract]
Securities available for sale		110,290	83,319
Recurring Basis [Member] | Obligations of States and Political Subdivisions [Member]
Assets [Abstract]
Securities available for sale		108,385	127,555
Recurring Basis [Member] | Corporate [Member]
Assets [Abstract]
Securities available for sale		34,380	34,309
Recurring Basis [Member] | Trust Preferred [Member]
Assets [Abstract]
Securities available for sale		1,883	1,819
Recurring Basis [Member] | Foreign Government [Member]
Assets [Abstract]
Securities available for sale		2,021	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		43,098	44,753
Capitalized mortgage loan servicing rights		0	0
Derivatives	[1]	4,705	5,155
Liabilities [Abstract]
Derivatives	[2]	2,219	2,326
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Agency [Member]
Assets [Abstract]
Securities available for sale		18,129	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		142,038	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		11,313	5,726
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Private Label Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		33,092	29,419
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Asset Backed [Member]
Assets [Abstract]
Securities available for sale		110,290	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		108,385	127,555
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Corporate [Member]
Assets [Abstract]
Securities available for sale		34,380	34,309
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Trust Preferred [Member]
Assets [Abstract]
Securities available for sale		1,883	1,819
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Foreign Government [Member]
Assets [Abstract]
Securities available for sale		2,021	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		19,909	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 [Abstract]
Income producing - real estate	[3]	213	217
Land, land development & construction - real estate	[3]	106	106
Commercial and industrial	[3]	1,335	2,243
Mortgage [Abstract]
1-4 Family	[3]	1,271	333
Resort Lending	[3]	325	572
Home equity - 1st lien	[3]	35
Home equity - 2nd lien	[3]	185
Installment [Abstract]
Home equity - 1st lien	[3]	40
Home equity - 2nd lien	[3]	40
Boat lending	[3]	65
Recreational vehicle lending	[3]	4
Other	[3]	95
Nonrecurring Basis [Member] | Other Real Estate [Member]
Mortgage [Abstract]
1-4 Family	[4]	129	95
Home equity - 2nd lien	[4]	59	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 [Abstract]
Income producing - real estate	[3]	0	0
Land, land development & construction - real estate	[3]	0	0
Commercial and industrial	[3]	0	0
Mortgage [Abstract]
1-4 Family	[3]	0	0
Resort Lending	[3]	0	0
Home equity - 1st lien	[3]	0
Home equity - 2nd lien	[3]	0
Installment [Abstract]
Home equity - 1st lien	[3]	0
Home equity - 2nd lien	[3]	0
Boat lending	[3]	0
Recreational vehicle lending	[3]	0
Other	[3]	0
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other Real Estate [Member]
Mortgage [Abstract]
1-4 Family	[4]	0	0
Home equity - 2nd lien	[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 [Abstract]
Income producing - real estate	[3]	0	0
Land, land development & construction - real estate	[3]	0	0
Commercial and industrial	[3]	0	0
Mortgage [Abstract]
1-4 Family	[3]	0	0
Resort Lending	[3]	0	0
Home equity - 1st lien	[3]	0
Home equity - 2nd lien	[3]	0
Installment [Abstract]
Home equity - 1st lien	[3]	0
Home equity - 2nd lien	[3]	0
Boat lending	[3]	0
Recreational vehicle lending	[3]	0
Other	[3]	0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Real Estate [Member]
Mortgage [Abstract]
1-4 Family	[4]	0	0
Home equity - 2nd lien	[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 [Abstract]
Income producing - real estate	[3]	213	217
Land, land development & construction - real estate	[3]	106	106
Commercial and industrial	[3]	1,335	2,243
Mortgage [Abstract]
1-4 Family	[3]	1,271	333
Resort Lending	[3]	325	572
Home equity - 1st lien	[3]	35
Home equity - 2nd lien	[3]	185
Installment [Abstract]
Home equity - 1st lien	[3]	40
Home equity - 2nd lien	[3]	40
Boat lending	[3]	65
Recreational vehicle lending	[3]	4
Other	[3]	95
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Other Real Estate [Member]
Mortgage [Abstract]
1-4 Family	[4]	129	95
Home equity - 2nd lien	[4]	$ 59	$ 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.