Fair Value Disclosures, Significant Assumptions (Details) - USD ($) $ in Thousands		Jun. 30, 2020		Dec. 31, 2019
Assets [Abstract]
Securities available for sale		$ 856,280		$ 518,400
Loans held for sale, carried at fair value		83,706		69,800
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
Securities available for sale		0		0
Derivatives		0		0
Liabilities [Abstract]
Derivatives		0		0
Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Securities available for sale		856,280		518,400
Derivatives		18,819		5,464
Liabilities [Abstract]
Derivatives		13,563		4,402
Significant Un-observable Inputs (Level 3) [Member]
Assets [Abstract]
Securities available for sale		0		0
Derivatives		0		0
Liabilities [Abstract]
Derivatives		0		0
Recurring Basis [Member]
Assets [Abstract]
Loans held for sale, carried at fair value		83,706		69,800
Capitalized mortgage loan servicing rights		13,773		19,171
Derivatives	[1]	18,819		5,464
Liabilities [Abstract]
Derivatives	[2]	13,563		4,402
Recurring Basis [Member] | U.S. Agency [Member]
Assets [Abstract]
Securities available for sale		12,440		14,661
Recurring Basis [Member] | U.S. Agency Residential Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		292,930		227,762
Recurring Basis [Member] | U.S. Agency Commercial Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		9,368		10,756
Recurring Basis [Member] | Private Label Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		41,351		39,693
Recurring Basis [Member] | Other Asset Backed [Member]
Assets [Abstract]
Securities available for sale		226,273		93,886
Recurring Basis [Member] | Obligations of States and Political Subdivisions [Member]
Assets [Abstract]
Securities available for sale		207,555		96,102
Recurring Basis [Member] | Corporate [Member]
Assets [Abstract]
Securities available for sale		64,184		33,195
Recurring Basis [Member] | Trust Preferred [Member]
Assets [Abstract]
Securities available for sale		1,661		1,843
Recurring Basis [Member] | Foreign Government [Member]
Assets [Abstract]
Securities available for sale		518		502
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets [Abstract]
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]
Loans held for sale, carried at fair value		83,706		69,800
Capitalized mortgage loan servicing rights		0		0
Derivatives	[1]	18,819		5,464
Liabilities [Abstract]
Derivatives	[2]	13,563		4,402
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Agency [Member]
Assets [Abstract]
Securities available for sale		12,440		14,661
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Agency Residential Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		292,930		227,762
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Agency Commercial Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		9,368		10,756
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Private Label Mortgage-Backed [Member]
Assets [Abstract]
Securities available for sale		41,351		39,693
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Asset Backed [Member]
Assets [Abstract]
Securities available for sale		226,273		93,886
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Obligations of States and Political Subdivisions [Member]
Assets [Abstract]
Securities available for sale		207,555		96,102
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Corporate [Member]
Assets [Abstract]
Securities available for sale		64,184		33,195
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Trust Preferred [Member]
Assets [Abstract]
Securities available for sale		1,661		1,843
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Foreign Government [Member]
Assets [Abstract]
Securities available for sale		518		502
Recurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member]
Assets [Abstract]
Loans held for sale, carried at fair value		0		0
Capitalized mortgage loan servicing rights		13,773		19,171
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] | Impaired Loans [Member] | Commercial [Member] | Commercial and Industrial [Member]
Impaired loans [Abstract]
Loans receivable	[3]	1,753		655
Nonrecurring Basis [Member] | Impaired Loans [Member] | Commercial [Member] | Commercial Real Estate [Member]
Impaired loans [Abstract]
Loans receivable		14,256	[4]	316	[3]
Nonrecurring Basis [Member] | Impaired Loans [Member] | Mortgage [Member] | 1-4 Family Owner Occupied - Jumbo [Member]
Impaired loans [Abstract]
Loans receivable	[3]	70		987
Nonrecurring Basis [Member] | Impaired Loans [Member] | Mortgage [Member] | 1-4 Family Owner Occupied - Non-jumbo [Member]
Impaired loans [Abstract]
Loans receivable	[3]	474		470
Nonrecurring Basis [Member] | Impaired Loans [Member] | Mortgage [Member] | 1-4 Family Non-owner Occupied [Member]
Impaired loans [Abstract]
Loans receivable	[3]	244		281
Nonrecurring Basis [Member] | Impaired Loans [Member] | Mortgage [Member] | 1-4 Family - 2nd Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	170		294
Nonrecurring Basis [Member] | Impaired Loans [Member] | Mortgage [Member] | Resort Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	215		245
Nonrecurring Basis [Member] | Impaired Loans [Member] | Installment [Member] | Boat Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	47		67
Nonrecurring Basis [Member] | Impaired Loans [Member] | Installment [Member] | Recreational Vehicle Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	30		2
Nonrecurring Basis [Member] | Impaired Loans [Member] | Installment [Member] | Other [Member]
Impaired loans [Abstract]
Loans receivable	[3]	134		121
Nonrecurring Basis [Member] | Other Real Estate [Member] | Commercial [Member] | Commercial Real Estate [Member]
Impaired loans [Abstract]
Loans receivable	[5]	474
Nonrecurring Basis [Member] | Other Real Estate [Member] | Mortgage [Member] | 1-4 Family Owner Occupied - Non-jumbo [Member]
Impaired loans [Abstract]
Loans receivable	[5]	25		31
Nonrecurring Basis [Member] | Other Real Estate [Member] | Installment [Member] | Other [Member]
Impaired loans [Abstract]
Loans receivable	[5]			28
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] | Commercial [Member] | Commercial Real Estate [Member]
Impaired loans [Abstract]
Loans receivable		2,616	[4]	0	[3]
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Impaired Loans [Member] | Mortgage [Member] | 1-4 Family Owner Occupied - Jumbo [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 Owner Occupied - Non-jumbo [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 Non-owner Occupied [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 - 2nd Lien [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] | Installment [Member] | Boat 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] | Installment [Member] | Recreational Vehicle 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] | Installment [Member] | Other [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0		0
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other Real Estate [Member] | Commercial [Member] | Commercial Real Estate [Member]
Impaired loans [Abstract]
Loans receivable	[5]	0
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other Real Estate [Member] | Mortgage [Member] | 1-4 Family Owner Occupied - Non-jumbo [Member]
Impaired loans [Abstract]
Loans receivable	[5]	0		0
Nonrecurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other Real Estate [Member] | Installment [Member] | Other [Member]
Impaired loans [Abstract]
Loans receivable	[5]			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] | Commercial [Member] | Commercial Real Estate [Member]
Impaired loans [Abstract]
Loans receivable		0	[4]	0	[3]
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Impaired Loans [Member] | Mortgage [Member] | 1-4 Family Owner Occupied - Jumbo [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 Owner Occupied - Non-jumbo [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 Non-owner Occupied [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 - 2nd Lien [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] | Installment [Member] | Boat Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	0		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		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		0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Real Estate [Member] | Commercial [Member] | Commercial Real Estate [Member]
Impaired loans [Abstract]
Loans receivable	[5]	0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Real Estate [Member] | Mortgage [Member] | 1-4 Family Owner Occupied - Non-jumbo [Member]
Impaired loans [Abstract]
Loans receivable	[5]	0		0
Nonrecurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Real Estate [Member] | Installment [Member] | Other [Member]
Impaired loans [Abstract]
Loans receivable	[5]			0
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]	1,753		655
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Commercial [Member] | Commercial Real Estate [Member]
Impaired loans [Abstract]
Loans receivable		11,640	[4]	316	[3]
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Mortgage [Member] | 1-4 Family Owner Occupied - Jumbo [Member]
Impaired loans [Abstract]
Loans receivable	[3]	70		987
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Mortgage [Member] | 1-4 Family Owner Occupied - Non-jumbo [Member]
Impaired loans [Abstract]
Loans receivable	[3]	474		470
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Mortgage [Member] | 1-4 Family Non-owner Occupied [Member]
Impaired loans [Abstract]
Loans receivable	[3]	244		281
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Mortgage [Member] | 1-4 Family - 2nd Lien [Member]
Impaired loans [Abstract]
Loans receivable	[3]	170		294
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Mortgage [Member] | Resort Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	215		245
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Installment [Member] | Boat Lending [Member]
Impaired loans [Abstract]
Loans receivable	[3]	47		67
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]	30		2
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Impaired Loans [Member] | Installment [Member] | Other [Member]
Impaired loans [Abstract]
Loans receivable	[3]	134		121
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Other Real Estate [Member] | Commercial [Member] | Commercial Real Estate [Member]
Impaired loans [Abstract]
Loans receivable	[5]	474
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Other Real Estate [Member] | Mortgage [Member] | 1-4 Family Owner Occupied - Non-jumbo [Member]
Impaired loans [Abstract]
Loans receivable	[5]	$ 25		31
Nonrecurring Basis [Member] | Significant Un-observable Inputs (Level 3) [Member] | Other Real Estate [Member] | Installment [Member] | Other [Member]
Impaired loans [Abstract]
Loans receivable	[5]			$ 28

[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] The fair value of $2.6 million of commercial real estate property included in this table was based on an auction held prior to June 30, 2020. Auction proceeds in this amount were received on July 21, 2020.

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