ALLL and Loans Receivable Summary (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	$ 108,893	$ 108,788
Collectively evaluated for impairment	9,432,195	8,178,761
Total loans receivable	9,541,088	8,287,549
Individually evaluated for impairment	107	3,223
Collectively evaluated for impairment	125,428	128,016
Total allowance for loan and lease losses	125,535	131,239
Residential Real Estate \| Residential Real Estate
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	9,519	12,685
Collectively evaluated for impairment	927,358	875,057
Total loans receivable	936,877	887,742
Individually evaluated for impairment	0	83
Collectively evaluated for impairment	10,237	10,548
Total allowance for loan and lease losses	10,237	10,631
Commercial
Allowance for Loan and Lease Losses and Loans Receivable
Total loans receivable	7,693,431	6,568,732
Commercial \| Commercial Real Estate
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	71,751	68,837
Collectively evaluated for impairment	5,476,423	4,588,724
Total loans receivable	5,548,174	4,657,561
Individually evaluated for impairment	61	568
Collectively evaluated for impairment	69,597	71,880
Total allowance for loan and lease losses	69,658	72,448
Commercial \| Other Commercial
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	20,292	20,975
Collectively evaluated for impairment	2,124,965	1,890,196
Total loans receivable	2,145,257	1,911,171
Individually evaluated for impairment	46	2,313
Collectively evaluated for impairment	36,812	35,847
Total allowance for loan and lease losses	36,858	38,160
Consumer and Other
Allowance for Loan and Lease Losses and Loans Receivable
Total loans receivable	910,780	831,075
Consumer and Other \| Home Equity
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	4,030	3,497
Collectively evaluated for impairment	611,751	541,191
Total loans receivable	615,781	544,688
Individually evaluated for impairment	0	39
Collectively evaluated for impairment	5,041	5,772
Total allowance for loan and lease losses	5,041	5,811
Consumer and Other \| Other Consumer
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	3,301	2,794
Collectively evaluated for impairment	291,698	283,593
Total loans receivable	294,999	286,387
Individually evaluated for impairment	0	220
Collectively evaluated for impairment	3,741	3,969
Total allowance for loan and lease losses	$ 3,741	$ 4,189

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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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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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