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Loans - Nonaccrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	$ 2,826,650	$ 2,919,981
Commercial Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	2,287,460	2,286,517
Commercial Portfolio Segment | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	2,263,440	2,260,087
Commercial Portfolio Segment | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	14,520	15,186
Commercial Portfolio Segment | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	9,500	11,244
Commercial Portfolio Segment | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	95,227	96,420
Commercial Portfolio Segment | Commercial and industrial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	91,028	89,818
Commercial Portfolio Segment | Commercial and industrial | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	3,301	3,973
Commercial Portfolio Segment | Commercial and industrial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	898	2,629
Commercial Portfolio Segment | Owner-occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	74,737	73,392
Commercial Portfolio Segment | Owner-occupied commercial real estate | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	74,142	71,068
Commercial Portfolio Segment | Owner-occupied commercial real estate | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	1,727
Commercial Portfolio Segment | Owner-occupied commercial real estate | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	595	597
Commercial Portfolio Segment | Investor commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	13,421	12,567
Commercial Portfolio Segment | Investor commercial real estate | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	13,421	12,567
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	64,581	60,274
Commercial Portfolio Segment | Construction | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	64,581	60,274
Commercial Portfolio Segment | Construction | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	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	972,275	995,879
Commercial Portfolio Segment | Single tenant lease financing | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	959,161	983,448
Commercial Portfolio Segment | Single tenant lease financing | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	8,434	7,751
Commercial Portfolio Segment | Single tenant lease financing | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	4,680	4,680
Commercial Portfolio Segment | Public finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	627,678	687,094
Commercial Portfolio Segment | Public finance | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	627,678	687,094
Commercial Portfolio Segment | Public finance | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	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	372,266	300,612
Commercial Portfolio Segment | Healthcare finance | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	371,203	300,612
Commercial Portfolio Segment | Healthcare finance | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	1,063	0
Commercial Portfolio Segment | Healthcare finance | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	0	0
Commercial Portfolio Segment | Small business lending
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	67,275	60,279
Commercial Portfolio Segment | Small business lending | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	62,226	55,206
Commercial Portfolio Segment | Small business lending | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	1,722	1,735
Commercial Portfolio Segment | Small business lending | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	$ 3,327	$ 3,338

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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.

+ References

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=118952595&loc=d3e4428-111522

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