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Commitments, Contingencies and Related Party Transactions (Tables) | 12 Months Ended
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Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract] |
Schedule of credit-related commitments | As of December 31, 2017, the Company’s unfunded commitments related to investments in qualified affordable housing partnerships, tax credit and other investments are estimated to be funded as follows:
($ in thousands) |  | Amount
2018 |  | $ | 98,000 |
2019 |  | 34,790 |
2020 |  | 16,744 |
2021 |  | 7,734 |
2022 |  | 11,078 |
Thereafter |  | 841 |
Total |  | $ | 169,187 |
The following table presents the Company’s credit-related commitments as of the periods indicated:
($ in thousands) |  | December 31,
| 2017 |  | 2016
Loan commitments |  | $ | 5,075,480 |  |  | $ | 5,077,869 |
Commercial letters of credit and SBLCs |  | $ | 1,655,897 |  |  | $ | 1,525,613 |
Schedule of estimated future minimum rental payments under non-cancelable operating leases | Future minimum rental payments under non-cancellable operating leases are estimated as follows:
Years Ending December 31, |  | Amount ($ in thousands)
2018 |  | $ | 31,845 |
2019 |  | 27,005 |
2020 |  | 22,242 |
2021 |  | 18,635 |
2022 |  | 13,944 |
Thereafter |  | 27,988 |
Total |  | $ | 141,659 |

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- Definition Tabular disclosure of information about obligations resulting from other commitments. + References No definition available. + Details
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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + Details
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