Loans Receivable, Net - Recorded Investment in Residential and Consumer Loans Based on Payment Activity Excluding PCI Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Non-performing	$ 20,895	$ 17,415
Total loans	5,961,869	5,579,812
Residential Real Estate
Financing Receivable, Recorded Investment [Line Items]
Non-performing	8,611	7,389
Total loans	2,162,322	2,044,286
Consumer
Financing Receivable, Recorded Investment [Line Items]
Non-performing	3,364	2,914
Total loans	468,019	474,947
Residential Real Estate \| Residential Real Estate
Financing Receivable, Recorded Investment [Line Items]
Performing	2,153,711	2,036,897
Non-performing	8,611	7,389
Total loans	2,162,322	2,044,286
Residential Real Estate \| Consumer
Financing Receivable, Recorded Investment [Line Items]
Performing	464,655	472,033
Non-performing	3,364	2,914
Total loans	$ 468,019	$ 474,947

Credit quality of loan receivables performing.

No definition available.

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- Definition

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.

+ References

No definition available.

+ Details

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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- Definition

Reflects the carrying amount of loans deemed to be questionable as to collection on which no interest is continuing to be recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

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