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Shareholders' Equity - Schedule of Minimum Required Capital Amounts and Ratios for Well Capitalized Institutions and The Actual Capital Amounts and Ratios for The Company and The Bank (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
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Minimum required capital amounts and ratios for well capitalized institutions and the actual capital amounts [Line Items] |  |  |  |
Common Shareholders’ Equity | $ 1,611,611 | $ 1,374,507 | $ 1,286,832 | $ 1,268,200
Well Capitalized Minimum Common Equity Tier One Ratio (as a percent) | 6.50% | 6.50% |  |
Well Capitalized Minimum Tier 1 Capital Ratio (as a percent) | 8.0 | 8.0 |  |
Well Capitalized Minimum Total Capital Ratio (as a percent) | 10.0 | 10.0 |  |
Well Capitalized Minimum Tier 1 Leverage Ratio (as a percent) | 5.0 | 5.0 |  |
Parent [Member] |  |  |  |
Minimum required capital amounts and ratios for well capitalized institutions and the actual capital amounts [Line Items] |  |  |  |
Common Shareholders’ Equity | $ 1,436,124 | $ 1,374,507 |  |
Common Equity Tier One Capital | 1,483,455 | 1,361,915 |  |
Tier 1 Capital | 1,658,942 | 1,361,915 |  |
Total Capital | $ 1,811,943 | $ 1,503,784 |  |
Common Equity Tier One Capital Ratio | 12.12% | 12.06% |  |
Tier 1 Capital Ratio (as a percent) | 13.56 | 12.06 |  |
Total Capital Ratio (as a percent) | 14.81 | 13.31 |  |
Tier 1 Leverage Ratio (as a percent) | 7.32 | 6.71 |  |
Subsidiaries [Member] |  |  |  |
Minimum required capital amounts and ratios for well capitalized institutions and the actual capital amounts [Line Items] |  |  |  |
Common Shareholders’ Equity | $ 1,586,473 | $ 1,290,455 |  |
Common Equity Tier One Capital | 1,645,405 | 1,289,435 |  |
Tier 1 Capital | 1,645,405 | 1,289,435 |  |
Total Capital | $ 1,798,190 | $ 1,431,106 |  |
Common Equity Tier One Capital Ratio | 13.47% | 11.43% |  |
Tier 1 Capital Ratio (as a percent) | 13.47 | 11.43 |  |
Total Capital Ratio (as a percent) | 14.72 | 12.69 |  |
Tier 1 Leverage Ratio (as a percent) | 7.26 | 6.35 |  |

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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 4.E) -URI http://asc.fasb.org/extlink&oid=122038336&loc=d3e74512-122707 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(31)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123596393&loc=d3e14064-108612 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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