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Regulatory Matters (Details) - USD ($) | Mar. 31, 2017 | Dec. 31, 2016
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Company |  |
Total capital (to risk-weighted assets), Amount |  |
Total Capital, Actual | $ 1,591,852,000 | $ 1,578,690,000
Total Capital, Required For Capital Adequacy Purposes | 925,708,000 | 926,076,000
Required for Capital Adequacy with Capital Buffer | 1,070,350,000 | 998,425,000
Tier I capital (to risk-weighted assets), Amount |  |
Tier I Capital, Actual (Risk Based) | 1,509,758,000 | 1,496,153,000
Tier I Capital, Required For Capital Adequacy Purposes | 694,281,000 | 694,557,000
Tier 1 Capital, Required for Capital Adequacy with Capital Buffer | 838,923,000 | 766,906,000
Tier I capital (to average assets), Amount |  |
Tier I Capital, Actual (Leverage) | 1,509,758,000 | 1,496,153,000
Tier I Capital, Required For Capital Adequacy Purposes | $ 515,352,000 | $ 520,947,000
Total capital and Tier I capital (to risk-weighted assets), Ratio |  |
Total Capital (to Risk Weighted Assets), Actual | 13.76% | 13.64%
Total Capital (to Risk Weighted Assets), Minimum For Capital Adequacy Purposes | 8.00% | 8.00%
Total Capital (to Risk Weighted assets), Minimum Required for Capital Adequacy with Capital Buffer | 9.25% | 8.63%
Tier I Capital (to Risk Weighted Assets), Actual (Risk Based) | 13.05% | 12.92%
Tier I Capital (to Risk Weighted Assets), Minimum For Capital Adequacy Purposes (Risk Based) | 6.00% | 6.00%
Tier 1 Capital (to Risk Weighted Assets), Minimum Required for Capital Adequacy with Capital Buffer | 7.25% | 6.625%
Tier I capital (to average assets), Ratio |  |
Tier I Capital (to Average Assets), Actual (Leverage) | 11.72% | 11.49%
Tier I Capital (to Average Assets), Minimum For Capital Adequacy Purposes (Leverage) | 4.00% | 4.00%
Bank |  |
Total capital (to risk-weighted assets), Amount |  |
Total Capital, Actual | $ 1,571,333,000 | $ 1,557,765,000
Total Capital, Required For Capital Adequacy Purposes | 925,199,000 | 925,566,000
Required for Capital Adequacy with Capital Buffer | 1,069,762,000 | 997,876,000
Required To Be Well Capitalized under Prompt Corrective Action Provisions | 1,156,499,000 | 1,156,957,000
Tier I capital (to risk-weighted assets), Amount |  |
Tier I Capital, Actual (Risk Based) | 1,489,239,000 | 1,475,228,000
Tier I Capital, Required For Capital Adequacy Purposes | 693,899,000 | 694,174,000
Tier 1 Capital, Required for Capital Adequacy with Capital Buffer | 838,462,000 | 766,484,000
Tier I Capital, Minimum to be Well Capitalized Under Prompt Corrective Action Provisions (Risk Based) | 925,199,000 | 925,566,000
Tier I capital (to average assets), Amount |  |
Tier I Capital, Actual (Leverage) | 1,489,239,000 | 1,475,228,000
Tier I Capital, Required For Capital Adequacy Purposes | 515,212,000 | 520,903,000
Tier I Capital, Minimum to be Well Capitalized Under Prompt Corrective Action Provisions (Leverage) | $ 644,014,000 | $ 651,129,000
Total capital and Tier I capital (to risk-weighted assets), Ratio |  |
Total Capital (to Risk Weighted Assets), Actual | 13.59% | 13.46%
Total Capital (to Risk Weighted Assets), Minimum For Capital Adequacy Purposes | 8.00% | 8.00%
Total Capital (to Risk Weighted assets), Minimum Required for Capital Adequacy with Capital Buffer | 9.25% | 8.63%
Total Capital (to Risk Weighted Assets), Minimum to be Well Capitalized Under Prompt Corrective Action Provisions | 10.00% | 10.00%
Tier I Capital (to Risk Weighted Assets), Actual (Risk Based) | 12.88% | 12.75%
Tier I Capital (to Risk Weighted Assets), Minimum For Capital Adequacy Purposes (Risk Based) | 6.00% | 6.00%
Tier 1 Capital (to Risk Weighted Assets), Minimum Required for Capital Adequacy with Capital Buffer | 7.25% | 6.625%
Tier I Capital (to Risk Weighted Assets), Minimum to be Well Capitalized Under Prompt Corrective Action Provisions (Risk Based) | 8.00% | 8.00%
Tier I capital (to average assets), Ratio |  |
Tier I Capital (to Average Assets), Actual (Leverage) | 11.56% | 11.33%
Tier I Capital (to Average Assets), Minimum For Capital Adequacy Purposes (Leverage) | 4.00% | 4.00%
Tier I Capital (to Average Assets), Minimum to be Well Capitalized Under Prompt Corrective Action Provisions (Leverage) | 5.00% | 5.00%
Common Equity Tier 1 [Member] | Company |  |
Tier I capital (to risk-weighted assets), Amount |  |
Tier I Capital, Actual (Risk Based) | $ 1,413,592,000 | $ 1,400,246,000
Tier I Capital, Required For Capital Adequacy Purposes | 520,711,000 | 520,917,000
Tier 1 Capital, Required for Capital Adequacy with Capital Buffer | $ 665,353,000 | $ 593,267,000
Total capital and Tier I capital (to risk-weighted assets), Ratio |  |
Tier I Capital (to Risk Weighted Assets), Actual (Risk Based) | 12.22% | 12.10%
Tier I Capital (to Risk Weighted Assets), Minimum For Capital Adequacy Purposes (Risk Based) | 4.50% | 4.50%
Tier 1 Capital (to Risk Weighted Assets), Minimum Required for Capital Adequacy with Capital Buffer | 5.75% | 5.125%
Common Equity Tier 1 [Member] | Bank |  |
Tier I capital (to risk-weighted assets), Amount |  |
Tier I Capital, Actual (Risk Based) | $ 1,489,239,000 | $ 1,475,228,000
Tier I Capital, Required For Capital Adequacy Purposes | 520,425,000 | 520,630,740.0000
Tier 1 Capital, Required for Capital Adequacy with Capital Buffer | 664,987,000 | 592,941,000
Tier I Capital, Minimum to be Well Capitalized Under Prompt Corrective Action Provisions (Risk Based) | $ 751,724,437.4900 | $ 752,022,180.0000
Total capital and Tier I capital (to risk-weighted assets), Ratio |  |
Tier I Capital (to Risk Weighted Assets), Actual (Risk Based) | 12.88% | 12.75%
Tier I Capital (to Risk Weighted Assets), Minimum For Capital Adequacy Purposes (Risk Based) | 4.50% | 4.50%
Tier 1 Capital (to Risk Weighted Assets), Minimum Required for Capital Adequacy with Capital Buffer | 5.75% | 5.125%
Tier I Capital (to Risk Weighted Assets), Minimum to be Well Capitalized Under Prompt Corrective Action Provisions (Risk Based) | 6.50% | 6.50%

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