ALLL and Loans Receivable Summary (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	$ 101,981	$ 108,788
Collectively evaluated for impairment	8,739,796	8,178,761
Total loans receivable	8,841,777	8,287,549
Individually evaluated for impairment	108	3,223
Collectively evaluated for impairment	128,946	128,016
Total allowance for loan and lease losses	129,054	131,239
Residential Real Estate \| Residential Real Estate
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	10,782	12,685
Collectively evaluated for impairment	909,933	875,057
Total loans receivable	920,715	887,742
Individually evaluated for impairment	0	83
Collectively evaluated for impairment	10,695	10,548
Total allowance for loan and lease losses	10,695	10,631
Commercial
Allowance for Loan and Lease Losses and Loans Receivable
Total loans receivable	7,036,468	6,568,732
Commercial \| Commercial Real Estate
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	62,939	68,837
Collectively evaluated for impairment	4,896,924	4,588,724
Total loans receivable	4,959,863	4,657,561
Individually evaluated for impairment	38	568
Collectively evaluated for impairment	72,409	71,880
Total allowance for loan and lease losses	72,447	72,448
Commercial \| Other Commercial
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	22,150	20,975
Collectively evaluated for impairment	2,054,455	1,890,196
Total loans receivable	2,076,605	1,911,171
Individually evaluated for impairment	68	2,313
Collectively evaluated for impairment	36,191	35,847
Total allowance for loan and lease losses	36,259	38,160
Consumer and Other
Allowance for Loan and Lease Losses and Loans Receivable
Total loans receivable	884,594	831,075
Consumer and Other \| Home Equity
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	3,221	3,497
Collectively evaluated for impairment	592,820	541,191
Total loans receivable	596,041	544,688
Individually evaluated for impairment	0	39
Collectively evaluated for impairment	5,801	5,772
Total allowance for loan and lease losses	5,801	5,811
Consumer and Other \| Other Consumer
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	2,889	2,794
Collectively evaluated for impairment	285,664	283,593
Total loans receivable	288,553	286,387
Individually evaluated for impairment	2	220
Collectively evaluated for impairment	3,850	3,969
Total allowance for loan and lease losses	$ 3,852	$ 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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