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Regulatory Matters (Details) $ in Thousands | Jun. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
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Bank Subsidiary |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Common equity Tier 1 capital, Actual Amount | $ 1,905,339 | $ 2,049,973
Common equity Tier 1 capital, Actual Ratio | 0.1146 | 0.1203
Total capital (to risk-weighted assets), Amount |  |
Total capital, Actual | $ 2,065,091 | $ 2,189,607
Tier I capital (to risk-weighted assets), Amount |  |
Tier 1 capital, Actual | 1,905,339 | 2,049,973
Tier I capital (to average assets), Amount |  |
Tier 1 capital, Actual | $ 1,905,339 | $ 2,049,973
Total capital and Tier I capital (to risk-weighted assets), Ratio |  |
Total capital (to Risk Weighted Assets), Actual | 0.1242 | 0.1285
Total capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes | 0.0800 | 0.0800
Tier 1 capital (to Risk Weighted Assets), Actual | 0.1146 | 0.1203
Tier 1 capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes | 0.0600 | 0.0600
Tier 1 capital (to Risk Weighted Assets), Required To Be Well Capitalized Under Prompt Corrective Action Provisions | 0.0800 | 0.0800
Tier I capital (to average assets), Ratio |  |
Tier I Capital (to Average Assets), Actual (Leverage) | 0.0939 | 0.1094
Tier I Capital (to Average Assets), Minimum For Capital Adequacy Purposes (Leverage) | 0.0400 | 0.0400
Total capital (to Risk Weighted Assets), Required To Be Well Capitalized Under Prompt Corrective Action Provisions | 0.1000 | 0.1000
Tier I Capital (to Average Assets), Minimum to be Well Capitalized Under Prompt Corrective Action Provisions (Leverage) | 0.0500 | 0.0500
Company |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Common equity Tier 1 capital, Actual Amount | $ 1,839,586 | $ 1,799,020
Common equity Tier 1 capital, Actual Ratio | 0.1105 | 0.1055
Total capital (to risk-weighted assets), Amount |  |
Total capital, Actual | $ 2,102,625 | $ 2,041,319
Tier I capital (to risk-weighted assets), Amount |  |
Tier 1 capital, Actual | 1,942,873 | 1,901,685
Tier I capital (to average assets), Amount |  |
Tier 1 capital, Actual | $ 1,942,873 | $ 1,901,685
Total capital and Tier I capital (to risk-weighted assets), Ratio |  |
Total capital (to Risk Weighted Assets), Actual | 0.1264 | 0.1197
Total capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes | 0.0800 | 0.0800
Total capital (to Risk Weighted assets), Minimum Capital Adequacy With Capital Conservation Buffer | 10.50% | 10.50%
Tier 1 capital (to Risk Weighted Assets), Actual | 0.1168 | 0.1115
Tier 1 capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes | 0.0600 | 0.0600
Tier 1 capital (to Risk Weighted Assets), Minimum Capital Adequacy With Capital Conservation Buffer | 8.50% | 8.50%
Tier I capital (to average assets), Ratio |  |
Tier I Capital (to Average Assets), Actual (Leverage) | 0.0957 | 0.1015
Tier I Capital (to Average Assets), Minimum For Capital Adequacy Purposes (Leverage) | 0.0400 | 0.0400
Bank |  |
Total capital and Tier I capital (to risk-weighted assets), Ratio |  |
Total capital (to Risk Weighted assets), Minimum Capital Adequacy With Capital Conservation Buffer | 10.50% | 10.50%
Tier 1 capital (to Risk Weighted Assets), Minimum Capital Adequacy With Capital Conservation Buffer | 8.50% | 8.50%
Common Equity Tier 1 | Company |  |
Total capital and Tier I capital (to risk-weighted assets), Ratio |  |
Tier 1 capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes | 0.0450 | 0.0450
Tier 1 capital (to Risk Weighted Assets), Minimum Capital Adequacy With Capital Conservation Buffer | 7.00% | 7.00%
Common Equity Tier 1 | Bank |  |
Total capital and Tier I capital (to risk-weighted assets), Ratio |  |
Tier 1 capital (to Risk Weighted Assets), Minimum Capital Adequacy With Capital Conservation Buffer | 7.00% | 7.00%
Common equity tier 1 capital | Bank Subsidiary |  |
Total capital and Tier I capital (to risk-weighted assets), Ratio |  |
Tier 1 capital (to Risk Weighted Assets), Required For Capital Adequacy Purposes | 0.0450 | 0.0450
Tier 1 capital (to Risk Weighted Assets), Required To Be Well Capitalized Under Prompt Corrective Action Provisions | 0.0650 | 0.0650

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