The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Allowance for Loan Losses - Summary of Allowance for Loan Losses and Recorded Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	$ 2,144		$ 1,763
Allowance for Loan Losses, Collectively Evaluated for Impairment	59,971		59,233
Total Allowance for Loan Losses	62,115	$ 61,479	60,996	$ 60,556	$ 60,517	$ 56,390
Portfolio Loans, Individually Evaluated for Impairment	72,540		49,506
Portfolio Loans, Collectively Evaluated for Impairment	6,123,225		5,897,142
Total Portfolio Loans	6,195,765		5,946,648
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	2,006		1,295
Allowance for Loan Losses, Collectively Evaluated for Impairment	29,825		32,412
Total Allowance for Loan Losses	31,831	32,836	33,707	32,890	31,232	27,235
Portfolio Loans, Individually Evaluated for Impairment	51,449		11,369
Portfolio Loans, Collectively Evaluated for Impairment	2,870,748		2,910,463
Total Portfolio Loans	2,922,197		2,921,832
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0		360
Allowance for Loan Losses, Collectively Evaluated for Impairment	14,366		11,236
Total Allowance for Loan Losses	14,366	13,227	11,596	10,226	10,874	8,966
Portfolio Loans, Individually Evaluated for Impairment	9,852		13,672
Portfolio Loans, Collectively Evaluated for Impairment	1,617,002		1,479,744
Total Portfolio Loans	1,626,854		1,493,416
Commercial construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	128		87
Allowance for Loan Losses, Collectively Evaluated for Impairment	7,747		7,896
Total Allowance for Loan Losses	7,875	7,254	7,983	10,915	11,676	13,167
Portfolio Loans, Individually Evaluated for Impairment	2,808		15,775
Portfolio Loans, Collectively Evaluated for Impairment	312,005		241,422
Total Portfolio Loans	314,813		257,197
Consumer real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0		10
Allowance for Loan Losses, Collectively Evaluated for Impairment	6,334		6,177
Total Allowance for Loan Losses	6,334	6,571	6,187	5,038	5,241	5,479
Portfolio Loans, Individually Evaluated for Impairment	8,418		8,674
Portfolio Loans, Collectively Evaluated for Impairment	1,249,023		1,197,983
Total Portfolio Loans	1,257,441		1,206,657
Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	10		11
Allowance for Loan Losses, Collectively Evaluated for Impairment	1,699		1,512
Total Allowance for Loan Losses	1,709	$ 1,591	1,523	$ 1,487	$ 1,494	$ 1,543
Portfolio Loans, Individually Evaluated for Impairment	13		16
Portfolio Loans, Collectively Evaluated for Impairment	74,447		67,530
Total Portfolio Loans	$ 74,460		$ 67,546