ALLL and Loans Receivable Summary (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	$ 104,411	$ 108,788
Collectively evaluated for impairment	8,221,659	8,178,761
Total loans receivable	8,326,070	8,287,549
Individually evaluated for impairment	702	3,223
Collectively evaluated for impairment	129,084	128,016
Total allowance for loan and lease losses	129,786	131,239
Residential Real Estate \| Residential Real Estate
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	10,646	12,685
Collectively evaluated for impairment	874,086	875,057
Total loans receivable	884,732	887,742
Individually evaluated for impairment	1	83
Collectively evaluated for impairment	10,710	10,548
Total allowance for loan and lease losses	10,711	10,631
Commercial
Allowance for Loan and Lease Losses and Loans Receivable
Total loans receivable	6,595,534	6,568,732
Commercial \| Commercial Real Estate
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	65,104	68,837
Collectively evaluated for impairment	4,620,978	4,588,724
Total loans receivable	4,686,082	4,657,561
Individually evaluated for impairment	57	568
Collectively evaluated for impairment	72,271	71,880
Total allowance for loan and lease losses	72,328	72,448
Commercial \| Other Commercial
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	22,954	20,975
Collectively evaluated for impairment	1,886,498	1,890,196
Total loans receivable	1,909,452	1,911,171
Individually evaluated for impairment	642	2,313
Collectively evaluated for impairment	36,207	35,847
Total allowance for loan and lease losses	36,849	38,160
Consumer and Other
Allowance for Loan and Lease Losses and Loans Receivable
Total loans receivable	845,804	831,075
Consumer and Other \| Home Equity
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	3,057	3,497
Collectively evaluated for impairment	559,324	541,191
Total loans receivable	562,381	544,688
Individually evaluated for impairment	0	39
Collectively evaluated for impairment	5,880	5,772
Total allowance for loan and lease losses	5,880	5,811
Consumer and Other \| Other Consumer
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	2,650	2,794
Collectively evaluated for impairment	280,773	283,593
Total loans receivable	283,423	286,387
Individually evaluated for impairment	2	220
Collectively evaluated for impairment	4,016	3,969
Total allowance for loan and lease losses	$ 4,018	$ 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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