Financing Receivable, Allowance for Credit Loss, Additional Information, Allowance [Abstract]

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- Definition

Provision recovery for loan and lease losses.

+ References

No definition available.

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- Definition

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

+ References

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- References

No definition available.

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- Definition

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

+ References

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- Definition

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

+ References

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- Definition

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

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- Definition

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

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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-SubTopic 10
-Section 45
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- Definition

Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Loans and Other Real Estate - Allowance for Loan and Lease Losses by Portfolio Segment and Related Recorded Investment in Loans and Leases (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 37,688	$ 35,455
Charge-offs	(1,936)	(3,347)
Recoveries	2,121	1,167
Provision	2,130	4,413	$ 6,090
Ending balance	40,003	37,688	35,455
Allowance for Loan Losses
Ending balance: Individually evaluated for impairment				$ 352	$ 338
Ending balance: Collectively evaluated for impairment				39,651	37,350
Ending balance	40,003	35,455	35,455	40,003	37,688	$ 35,455
Loans
Total Loans				5,140,940	4,460,447
Loans
Loans
Ending balance: Individually evaluated for impairment				22,124	19,702
Ending balance: Collectively evaluated for impairment				5,110,068	4,440,093
Total Loans				5,140,940	4,460,447
Loans \| Loans Acquired with Deteriorated Credit Quality
Loans
Ending balance: Loans acquired with deteriorated credit quality				8,748	652
Commercial, secured by real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	27,881	25,704
Charge-offs	(544)	(421)
Recoveries	251	468
Provision	1,362	2,130
Ending balance	28,950	27,881	25,704
Allowance for Loan Losses
Ending balance: Individually evaluated for impairment				228	307	454
Ending balance: Collectively evaluated for impairment				28,722	27,574
Ending balance	27,881	27,881	25,704	28,950	27,881	25,704
Loans
Total Loans				3,589,593	3,057,779
Commercial, secured by real estate \| Loans
Loans
Ending balance: Individually evaluated for impairment				15,948	16,554
Ending balance: Collectively evaluated for impairment				3,567,540	3,040,573
Total Loans				3,589,593	3,057,779
Commercial, secured by real estate \| Loans \| Loans Acquired with Deteriorated Credit Quality
Loans
Ending balance: Loans acquired with deteriorated credit quality				6,105	652
Commercial, industrial and other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,742	2,313
Charge-offs	(645)	(1,452)
Recoveries	1,100	317
Provision	1,092	564
Ending balance	3,289	1,742	2,313
Allowance for Loan Losses
Ending balance: Individually evaluated for impairment				5	7	9
Ending balance: Collectively evaluated for impairment				3,284	1,735
Ending balance	1,742	1,742	2,313	3,289	1,742	2,313
Loans
Total Loans				431,934	336,735
Commercial, industrial and other \| Loans
Loans
Ending balance: Individually evaluated for impairment				1,504	1,360
Ending balance: Collectively evaluated for impairment				429,486	335,375
Total Loans				431,934	336,735
Commercial, industrial and other \| Loans \| Loans Acquired with Deteriorated Credit Quality
Loans
Ending balance: Loans acquired with deteriorated credit quality				944	0
Equipment finance
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	987	630
Charge-offs	(414)	(507)
Recoveries	332	23
Provision	52	841
Ending balance	957	987	630
Allowance for Loan Losses
Ending balance: Individually evaluated for impairment				10	14	30
Ending balance: Collectively evaluated for impairment				947	973
Ending balance	987	987	630	957	987	630
Loans
Total Loans				111,076	87,925
Equipment finance \| Loans
Loans
Ending balance: Individually evaluated for impairment				23	331
Ending balance: Collectively evaluated for impairment				111,053	87,594
Total Loans				111,076	87,925
Equipment finance \| Loans \| Loans Acquired with Deteriorated Credit Quality
Loans
Ending balance: Loans acquired with deteriorated credit quality				0	0
Real estate - residential mortgage
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,566	1,557
Charge-offs	(50)	(131)
Recoveries	66	10
Provision	143	130
Ending balance	1,725	1,566	1,557
Allowance for Loan Losses
Ending balance: Individually evaluated for impairment				104	4	4
Ending balance: Collectively evaluated for impairment				1,621	1,562
Ending balance	1,566	1,566	1,557	1,725	1,566	1,557
Loans
Total Loans				335,191	329,854
Real estate - residential mortgage \| Loans
Loans
Ending balance: Individually evaluated for impairment				2,315	730
Ending balance: Collectively evaluated for impairment				332,486	329,124
Total Loans				335,191	329,854
Real estate - residential mortgage \| Loans \| Loans Acquired with Deteriorated Credit Quality
Loans
Ending balance: Loans acquired with deteriorated credit quality				390	0
Real estate - construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,015	2,731
Charge-offs	0	(248)
Recoveries	126	17
Provision	(469)	515
Ending balance	2,672	3,015	2,731
Allowance for Loan Losses
Ending balance: Individually evaluated for impairment				0	0	0
Ending balance: Collectively evaluated for impairment				2,672	3,015
Ending balance	3,015	3,015	2,731	2,672	3,015	2,731
Loans
Total Loans				335,169	319,545
Real estate - construction \| Loans
Loans
Ending balance: Individually evaluated for impairment				1,663	0
Ending balance: Collectively evaluated for impairment				332,722	319,545
Total Loans				335,169	319,545
Real estate - construction \| Loans \| Loans Acquired with Deteriorated Credit Quality
Loans
Ending balance: Loans acquired with deteriorated credit quality				784	0
Home equity and consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,497	2,520
Charge-offs	(283)	(588)
Recoveries	246	332
Provision	(50)	233
Ending balance	2,410	2,497	2,520
Allowance for Loan Losses
Ending balance: Individually evaluated for impairment				5	6	8
Ending balance: Collectively evaluated for impairment				2,405	2,491
Ending balance	$ 2,497	$ 2,497	$ 2,520	2,410	2,497	$ 2,520
Loans
Total Loans				337,977	328,609
Home equity and consumer \| Loans
Loans
Ending balance: Individually evaluated for impairment				671	727
Ending balance: Collectively evaluated for impairment				336,781	327,882
Total Loans				337,977	328,609
Home equity and consumer \| Loans \| Loans Acquired with Deteriorated Credit Quality
Loans
Ending balance: Loans acquired with deteriorated credit quality				$ 525	$ 0