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Loans - Nonaccrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	$ 2,880,597	$ 2,997,967
Commercial Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	2,405,491	2,515,631
Commercial Portfolio Segment | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	2,353,411	2,481,795
Commercial Portfolio Segment | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	42,842	17,962
Commercial Portfolio Segment | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	9,238	15,874
Commercial Portfolio Segment | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	107,142	75,387
Commercial Portfolio Segment | Commercial and industrial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	92,863	74,138
Commercial Portfolio Segment | Commercial and industrial | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	13,601	732
Commercial Portfolio Segment | Commercial and industrial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	678	517
Commercial Portfolio Segment | Owner-occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	84,819	89,785
Commercial Portfolio Segment | Owner-occupied commercial real estate | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	76,547	84,292
Commercial Portfolio Segment | Owner-occupied commercial real estate | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	4,843	3,655
Commercial Portfolio Segment | Owner-occupied commercial real estate | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	3,429	1,838
Commercial Portfolio Segment | Investor commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	28,505	13,902
Commercial Portfolio Segment | Investor commercial real estate | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	28,505	13,902
Commercial Portfolio Segment | Investor commercial real estate | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Commercial Portfolio Segment | Investor commercial real estate | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Commercial Portfolio Segment | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	115,414	110,385
Commercial Portfolio Segment | Construction | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	104,656	110,385
Commercial Portfolio Segment | Construction | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	10,758	0
Commercial Portfolio Segment | Construction | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Commercial Portfolio Segment | Single tenant lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	921,998	950,172
Commercial Portfolio Segment | Single tenant lease financing | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	915,702	932,830
Commercial Portfolio Segment | Single tenant lease financing | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	5,196	10,018
Commercial Portfolio Segment | Single tenant lease financing | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	1,100	7,324
Commercial Portfolio Segment | Public finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	601,738	622,257
Commercial Portfolio Segment | Public finance | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	600,658	622,257
Commercial Portfolio Segment | Public finance | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	1,080	0
Commercial Portfolio Segment | Public finance | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Commercial Portfolio Segment | Healthcare finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	417,388	528,154
Commercial Portfolio Segment | Healthcare finance | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	415,845	526,517
Commercial Portfolio Segment | Healthcare finance | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	602	627
Commercial Portfolio Segment | Healthcare finance | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	941	1,010
Commercial Portfolio Segment | Small business lending
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	102,889	125,589
Commercial Portfolio Segment | Small business lending | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	93,037	117,474
Commercial Portfolio Segment | Small business lending | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	6,762	2,930
Commercial Portfolio Segment | Small business lending | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	3,090	5,185
Commercial Portfolio Segment | Franchise finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	25,598	$ 0
Commercial Portfolio Segment | Franchise finance | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	25,598
Commercial Portfolio Segment | Franchise finance | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0
Commercial Portfolio Segment | Franchise finance | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	$ 0

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522

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