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Regulatory Capital (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Total capital (to risk-weighted assets) |  |
Actual, Amount | $ 1,437,889 | $ 1,232,089
Actual, Ratio | 14.70% | 15.64%
Minimum capital requirement, Amount | $ 782,453 | $ 630,109
Minimum capital requirement, Ratio | 8.00% | 8.00%
Tier 1 capital (to risk-weighted assets) |  |
Actual, Amount | $ 1,308,017 | $ 1,133,125
Actual, Ratio | 13.37% | 14.39%
Minimum capital requirement, Amount | $ 586,840 | $ 472,582
Minimum capital requirement, Ratio | 6.00% | 6.00%
Common Equity Tier 1 (to risk-weighted assets) |  |
Actual, Amount | $ 1,183,517 | $ 1,009,276
Actual, Ratio | 12.10% | 12.81%
Minimum capital requirement, Amount | $ 440,130 | $ 354,437
Minimum capital requirement, Ratio | 4.50% | 4.50%
Tier 1 capital (to average assets) |  |
Actual, Amount | $ 1,308,017 | $ 1,133,125
Actual, Ratio | 11.35% | 11.90%
Minimum capital requirement, Amount | $ 461,130 | $ 380,770
Minimum capital requirement, Ratio | 4.00% | 4.00%
Glacier Bank |  |
Total capital (to risk-weighted assets) |  |
Actual, Amount | $ 1,401,991 | $ 1,182,509
Actual, Ratio | 14.35% | 15.04%
Minimum capital requirement, Amount | $ 781,430 | $ 628,823
Minimum capital requirement, Ratio | 8.00% | 8.00%
Well capitalized requirement, Amount | $ 976,787 | $ 786,029
Well capitalized requirement, Ratio | 10.00% | 10.00%
Tier 1 capital (to risk-weighted assets) |  |
Actual, Amount | $ 1,279,778 | $ 1,083,744
Actual, Ratio | 13.10% | 13.79%
Minimum capital requirement, Amount | $ 586,072 | $ 471,617
Minimum capital requirement, Ratio | 6.00% | 6.00%
Well capitalized requirement, Amount | $ 781,430 | $ 628,823
Well capitalized requirement, Ratio | 8.00% | 8.00%
Common Equity Tier 1 (to risk-weighted assets) |  |
Actual, Amount | $ 1,279,778 | $ 1,083,744
Actual, Ratio | 13.10% | 13.79%
Minimum capital requirement, Amount | $ 439,554 | $ 353,713
Minimum capital requirement, Ratio | 4.50% | 4.50%
Well capitalized requirement, Amount | $ 634,911 | $ 510,919
Well capitalized requirement, Ratio | 6.50% | 6.50%
Tier 1 capital (to average assets) |  |
Actual, Amount | $ 1,279,778 | $ 1,083,744
Actual, Ratio | 11.08% | 11.47%
Minimum capital requirement, Amount | $ 462,072 | $ 377,809
Minimum capital requirement, Ratio | 4.00% | 4.00%
Well capitalized requirement, Amount | $ 577,590 | $ 472,261
Well capitalized requirement, Ratio | 5.00% | 5.00%

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