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Loans Receivable and Allowance for Credit Losses (Summary of Activities in Allowance for Loan Losses) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Allowance for loan losses |  |  |  |
Beginning balance |  |  | $ 311,322 |
Charge-offs | $ (317) | $ (13,300) | (390) | $ (13,400)
Ending balance | 330,625 | 301,550 | 330,625 | 301,550
Commercial lending | Commercial and industrial (“C&I”) |  |  |  |
Allowance for loan losses |  |  |  |
Beginning balance |  |  | 191,340 |
Ending balance | 205,503 |  | 205,503 |
Commercial lending | Commercial real estate (“CRE”) |  |  |  |
Allowance for loan losses |  |  |  |
Beginning balance |  |  | 39,053 |
Ending balance | 40,517 |  | 40,517 |
Commercial lending | Real estate loan | Multifamily residential |  |  |  |
Allowance for loan losses |  |  |  |
Beginning balance |  |  | 19,283 |
Ending balance | 18,574 |  | 18,574 |
Commercial lending | Construction and land |  |  |  |
Allowance for loan losses |  |  |  |
Beginning balance |  |  | 20,282 |
Ending balance | 22,961 |  | 22,961 |
Consumer lending | Real estate loan | Single-family residential |  |  |  |
Allowance for loan losses |  |  |  |
Beginning balance |  |  | 31,340 |
Ending balance | 32,763 |  | 32,763 |
Consumer lending | HELOCs |  |  |  |
Allowance for loan losses |  |  |  |
Beginning balance |  |  | 5,774 |
Ending balance | 6,177 |  | 6,177 |
Consumer lending | Other consumer |  |  |  |
Allowance for loan losses |  |  |  |
Beginning balance |  |  | 4,250 |
Ending balance | 4,130 |  | 4,130 |
Non-PCI Loans |  |  |  |
Allowance for loan losses |  |  |  |
Beginning balance | 317,880 | 297,607 | 311,300 | 287,070
(Reversal of) provision for loan losses | 20,740 | 15,139 | 41,388 | 35,072
Charge-offs | (11,759) | (13,696) | (29,017) | (32,159)
Recoveries | 4,121 | 3,101 | 6,942 | 11,760
Net charge-offs | (7,638) | (10,595) | (22,075) | (20,399)
Foreign currency translation adjustments | (362) | (640) | 7 | (232)
Ending balance | 330,620 | 301,511 | 330,620 | 301,511
Non-PCI Loans | Commercial lending | Commercial and industrial (“C&I”) |  |  |  |
Allowance for loan losses |  |  |  |
Charge-offs | (11,745) | (13,534) | (28,989) | (31,979)
Recoveries | 1,713 | 1,151 | 3,964 | 8,430
Non-PCI Loans | Commercial lending | Commercial real estate (“CRE”) |  |  |  |
Allowance for loan losses |  |  |  |
Recoveries | 1,837 | 2 | 2,059 | 429
Non-PCI Loans | Commercial lending | Real estate loan | Multifamily residential |  |  |  |
Allowance for loan losses |  |  |  |
Recoveries | 53 | 1,061 | 334 | 1,394
Non-PCI Loans | Commercial lending | Construction and land |  |  |  |
Allowance for loan losses |  |  |  |
Recoveries | 439 | 258 | 502 | 693
Non-PCI Loans | Consumer lending | Real estate loan | Single-family residential |  |  |  |
Allowance for loan losses |  |  |  |
Charge-offs | 0 | 0 | 0 | (1)
Recoveries | 72 | 629 | 74 | 813
Non-PCI Loans | Consumer lending | HELOCs |  |  |  |
Allowance for loan losses |  |  |  |
Recoveries | 0 | 0 | 2 | 0
Non-PCI Loans | Consumer lending | Other consumer |  |  |  |
Allowance for loan losses |  |  |  |
Charge-offs | (14) | (162) | (28) | (179)
Recoveries | 7 | 0 | 7 | 1
PCI Loans |  |  |  |
Allowance for loan losses |  |  |  |
Beginning balance | 14 | 47 | 22 | 58
(Reversal of) provision for loan losses | (9) | (8) | (17) | (19)
Ending balance | 5 | $ 39 | 5 | $ 39
PCI Loans | Commercial lending | Commercial and industrial (“C&I”) |  |  |  |
Allowance for loan losses |  |  |  |
Beginning balance |  |  | 0 |
Ending balance | 0 |  | 0 |
PCI Loans | Commercial lending | Commercial real estate (“CRE”) |  |  |  |
Allowance for loan losses |  |  |  |
Beginning balance |  |  | 22 |
Ending balance | 5 |  | 5 |
PCI Loans | Commercial lending | Real estate loan | Multifamily residential |  |  |  |
Allowance for loan losses |  |  |  |
Beginning balance |  |  | 0 |
Ending balance | 0 |  | 0 |
PCI Loans | Commercial lending | Construction and land |  |  |  |
Allowance for loan losses |  |  |  |
Beginning balance |  |  | 0 |
Ending balance | 0 |  | 0 |
PCI Loans | Consumer lending | Real estate loan | Single-family residential |  |  |  |
Allowance for loan losses |  |  |  |
Beginning balance |  |  | 0 |
Ending balance | 0 |  | 0 |
PCI Loans | Consumer lending | HELOCs |  |  |  |
Allowance for loan losses |  |  |  |
Beginning balance |  |  | 0 |
Ending balance | 0 |  | 0 |
PCI Loans | Consumer lending | Other consumer |  |  |  |
Allowance for loan losses |  |  |  |
Beginning balance |  |  | 0 |
Ending balance | $ 0 |  | $ 0 |

X
- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + 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)(4) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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- Definition Amount of gain (loss) from converting allowance reserve for credit loss to currency of reporting entity from amount denominated or measured in a different currency, which decreases (increases) the allowance for loan and lease losses. + 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 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 + Details
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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 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=118939070&loc=d3e15032-111544 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 + Details
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