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Loans and Leases Receivable and Allowance for Loan and Lease Losses - Schedule of Loan Purchases and Sales (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payments to acquire loans receivable	$ 132,520,000	$ 0
Value at the time of sale of loans	$ 0	(14,993,000)
Purchase price as a percentage of loans outstanding	97.60%
Gain/Loss on Sale of Loans	$ 0	1,361,000
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payments to acquire loans receivable	66,384,000	0
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payments to acquire loans receivable	66,136,000	0
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Value at the time of sale of loans	0	(6,842,000)
Commercial real estate owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Value at the time of sale of loans	$ 0	$ (8,151,000)

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- Definition

Loans Held-for-investment, Purchase Price as a Percentage of Loans Outstanding

+ References

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Value at the time of Sale of Loans Receivable

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13(h))
-URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.3(a))
-URI http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263

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The cash outflow for the purchase of loan receivable arising from the financing of goods and services.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
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