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Loans and Leases Receivable and Allowance for Credit Losses - Credit Ratings of Covered and Non-Covered Loan Portfolio (Detail) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
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Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable | $ 7,353,262 | $ 7,318,988
Financing receivable, at amortized cost or lower of cost or market |  | 7,316,903
Pass/Satisfactory |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 5,442,307
Special mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 111,157
Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 139,744
Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 1,597,188
Non-performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 26,507
Multi-family |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 26,646 |
2019 | 23,689 |
2018 | 172,088 |
2017 | 477,151 |
2016 | 345,458 |
2015 | 576,601 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 1,621,633 | 1,909,274
Multi-family | Pass/Satisfactory |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 26,646 |
2019 | 23,689 |
2018 | 172,088 |
2017 | 445,613 |
2016 | 329,586 |
2015 | 569,400 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 1,567,022 | 1,816,200
Multi-family | Special mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 19,510 |
2016 | 1,968 |
2015 | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 21,478 | 69,637
Multi-family | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 12,028 |
2016 | 13,904 |
2015 | 7,201 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 33,133 | 23,437
Multi-family | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
2015 | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 0 |
Multi-family | Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Multi-family | Non-performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 323,338 |
2019 | 504,856 |
2018 | 185,881 |
2017 | 140,207 |
2016 | 63,377 |
2015 | 105,149 |
Revolving loans amortized cost basis | 750,144 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 2,072,952 | 1,889,980
Commercial and industrial | Pass/Satisfactory |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 323,338 |
2019 | 491,492 |
2018 | 183,202 |
2017 | 120,795 |
2016 | 55,483 |
2015 | 101,805 |
Revolving loans amortized cost basis | 718,827 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 1,994,942 | 1,841,074
Commercial and industrial | Special mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 7,788 |
2018 | 2,403 |
2017 | 17,652 |
2016 | 120 |
2015 | 26 |
Revolving loans amortized cost basis | 20,800 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 48,789 | 26,285
Commercial and industrial | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 5,576 |
2018 | 276 |
2017 | 1,760 |
2016 | 7,774 |
2015 | 3,318 |
Revolving loans amortized cost basis | 10,517 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 29,221 | 22,621
Commercial and industrial | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
2015 | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 0 |
Commercial and industrial | Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Commercial and industrial | Non-performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Commercial real estate owner occupied |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 18,672 |
2019 | 184,756 |
2018 | 90,744 |
2017 | 82,973 |
2016 | 51,340 |
2015 | 113,788 |
Revolving loans amortized cost basis | 1,672 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 543,945 | 552,007
Commercial real estate owner occupied | Pass/Satisfactory |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 18,672 |
2019 | 184,756 |
2018 | 90,261 |
2017 | 82,509 |
2016 | 49,074 |
2015 | 102,449 |
Revolving loans amortized cost basis | 1,672 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 529,393 | 536,777
Commercial real estate owner occupied | Special mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 483 |
2017 | 114 |
2016 | 0 |
2015 | 399 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 996 | 8,286
Commercial real estate owner occupied | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 350 |
2016 | 2,266 |
2015 | 10,940 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 13,556 | 6,944
Commercial real estate owner occupied | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
2015 | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 0 |
Commercial real estate owner occupied | Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Commercial real estate owner occupied | Non-performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Commercial real estate non-owner occupied |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 74,905 |
2019 | 118,164 |
2018 | 149,196 |
2017 | 249,784 |
2016 | 222,718 |
2015 | 438,059 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 1,252,826 | 1,223,529
Commercial real estate non-owner occupied | Pass/Satisfactory |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 74,905 |
2019 | 118,164 |
2018 | 118,424 |
2017 | 249,784 |
2016 | 201,214 |
2015 | 412,250 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 1,174,741 | 1,129,838
Commercial real estate non-owner occupied | Special mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 374 |
2015 | 4,201 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 4,575 | 6,949
Commercial real estate non-owner occupied | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 30,772 |
2017 | 0 |
2016 | 2,080 |
2015 | 21,608 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 54,460 | 86,742
Commercial real estate non-owner occupied | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 19,050 |
2015 | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 19,050 |
Commercial real estate non-owner occupied | Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Commercial real estate non-owner occupied | Non-performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 451 |
2019 | 83,774 |
2018 | 20,241 |
2017 | 0 |
2016 | 9,886 |
2015 | 0 |
Revolving loans amortized cost basis | 1,096 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 115,448 | 118,418
Construction | Pass/Satisfactory |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 451 |
2019 | 83,774 |
2018 | 20,241 |
2017 | 0 |
2016 | 9,886 |
2015 | 0 |
Revolving loans amortized cost basis | 1,096 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 115,448 | 118,418
Construction | Special mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
2015 | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 0 | 0
Construction | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
2015 | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 0 | 0
Construction | Doubtful |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
2015 | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 0 |
Construction | Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Construction | Non-performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Residential real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 1,527 |
2019 | 15,164 |
2018 | 8,264 |
2017 | 14,804 |
2016 | 48,417 |
2015 | 90,792 |
Revolving loans amortized cost basis | 183,079 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 362,047 | 375,014
Residential real estate | Pass/Satisfactory |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Residential real estate | Special mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Residential real estate | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Residential real estate | Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 1,527 |
2019 | 15,164 |
2018 | 8,103 |
2017 | 14,644 |
2016 | 47,557 |
2015 | 86,675 |
Revolving loans amortized cost basis | 182,652 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 356,322 | 362,962
Residential real estate | Non-performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 161 |
2017 | 160 |
2016 | 860 |
2015 | 4,117 |
Revolving loans amortized cost basis | 427 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 5,725 | 12,052
Manufactured housing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 312 |
2018 | 643 |
2017 | 81 |
2016 | 44 |
2015 | 68,160 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 69,240 | 70,398
Manufactured housing | Pass/Satisfactory |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Manufactured housing | Special mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Manufactured housing | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Manufactured housing | Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 312 |
2018 | 643 |
2017 | 81 |
2016 | 44 |
2015 | 64,782 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 65,862 | 63,250
Manufactured housing | Non-performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
2015 | 3,378 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 3,378 | 7,148
Other consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 122,726 |
2019 | 1,036,321 |
2018 | 148,287 |
2017 | 7,020 |
2016 | 762 |
2015 | 55 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 1,315,171 | 1,178,283
Other consumer | Pass/Satisfactory |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Other consumer | Special mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Other consumer | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans and leases receivable |  | 0
Other consumer | Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 122,726 |
2019 | 1,034,536 |
2018 | 147,669 |
2017 | 7,004 |
2016 | 762 |
2015 | 55 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | 1,312,752 | 1,170,976
Other consumer | Non-performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 1,785 |
2018 | 618 |
2017 | 16 |
2016 | 0 |
2015 | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term | 0 |
Total loans and leases receivable | $ 2,419 | $ 7,307

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