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Loans Receivable and Allowance for Credit Losses (Details 14) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Mar. 31, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Dec. 31, 2016
Loans Held-for-Sale |  |  |  |  |  |
Loans held-for-sale | $ 178,000 |  |  | $ 178,000 |  | $ 23,076,000
Loans transferred from held-for-investment to held-for-sale |  |  |  | 418,489,000 | $ 720,670,000 |
Write-down of loans transferred from loans held-for-investment to loans held-for-sale recorded to allowance for loan losses | 7,424,000 | $ 24,047,000 |  | 20,024,000 | 32,457,000 |
Held-to-maturity investment security | 0 |  |  | 0 |  | 143,971,000
Loans held-for-sale |  |  |  |  |  |
Loans Held-for-Sale |  |  |  |  |  |
Lower of cost or fair value adjustment | 0 | 0 |  | 61,000 | 2,400,000 |
Multifamily residential, C&I, and CRE |  |  |  |  |  |
Loans Held-for-Sale |  |  |  |  |  |
Loans transferred from held-for-investment to held-for-sale |  | 144,900,000 |  |  | 720,700,000 |
Write-down of loans transferred from loans held-for-investment to loans held-for-sale recorded to allowance for loan losses |  | 0 |  |  | 1,900,000 |
Multifamily residential, C&I, and CRE | Originated |  |  |  |  |  |
Loans Held-for-Sale |  |  |  |  |  |
Net gains from sales of loans held-for-sale during the period |  |  |  |  | 9,300,000 |
Loans sold or securitized |  |  |  |  | 529,500,000 |
C&I and CRE | Originated |  |  |  |  |  |
Loans Held-for-Sale |  |  |  |  |  |
Loans sold | 33,800,000 | 107,300,000 |  | 101,400,000 | 327,800,000 |
Net gains from sales of loans held-for-sale during the period | 2,300,000 | 2,200,000 |  | 5,500,000 | 8,200,000 |
Single-family residential and C&I |  |  |  |  |  |
Loans Held-for-Sale |  |  |  |  |  |
Loans purchased |  | 256,200,000 |  |  | 1,040,000,000 |
Loans sold in secondary market | Purchased |  |  |  |  |  |
Loans Held-for-Sale |  |  |  |  |  |
Loans sold | 57,400,000 | 45,800,000 |  | 354,500,000 | 179,400,000 |
Net gains from sales of loans held-for-sale during the period | 19,000 | 0 |  | 1,200,000 | 69,000 |
Residential | Real estate loan | Single-family |  |  |  |  |  |
Loans Held-for-Sale |  |  |  |  |  |
Loans held-for-sale | 178,000 |  |  | 178,000 |  |
Loans purchased |  | $ 165,800,000 |  |  | $ 488,300,000 |
Residential | Real estate loan | Multifamily | Originated |  |  |  |  |  |
Loans Held-for-Sale |  |  |  |  |  |
Net gains from sales of loans held-for-sale during the period |  |  | $ 1,100,000 |  |  |
Loans securitized |  |  | 201,700,000 |  |  |
Mortgage servicing rights |  |  | 641,000 |  |  |
Held-to-maturity investment security |  |  | $ 160,100,000 |  |  |
Consumer |  |  |  |  |  |
Loans Held-for-Sale |  |  |  |  |  |
Loans held-for-sale |  |  |  |  |  | $ 23,100,000
C&I |  |  |  |  |  |
Loans Held-for-Sale |  |  |  |  |  |
Loans transferred from held-for-investment to held-for-sale | 74,500,000 |  |  | 418,500,000 |  |
Write-down of loans transferred from loans held-for-investment to loans held-for-sale recorded to allowance for loan losses | 232,000 |  |  | 441,000 |  |
Loans purchased | $ 72,400,000 |  |  | $ 441,100,000 |  |

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- Definition Securitization Or Asset-Backed Financing Arrangement, Transfer Of Securitized Loans + References No definition available. + Details
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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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 + Details
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- Definition The amount of any significant purchases of financing receivables during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans and leases that were sold during the reporting period. This element refers to the gain (loss) and not to the cash proceeds of the sales. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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- Definition Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.6) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount, after allowance for bad debt, of loan receivables held-for-sale that are not part of a disposal group. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522 + Details
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- Definition Amortized amount of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7524895&loc=d3e120260-111741 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122492-111745 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122739-111746 + Details
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