Regulatory Matters (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Total Capital to Risk-Weighted Assets
Actual, amount	$ 642,345	$ 633,228
Actual, ratio	13.30%	13.40%
Tier I Capital to Risk-Weighted Assets
Actual, amount	$ 581,634	$ 576,332
Actual, ratio	12.00%	12.20%
Common Equity Tier 1 to Risk-Weighted Assets
Actual, amount	$ 580,692	$ 575,411
Actual, ratio	12.00%	12.20%
Tier I Capital to Average Assets
Actual, amount	$ 581,634	$ 576,332
Actual, ratio	10.70%	12.10%
Bank
Total Capital to Risk-Weighted Assets
Actual, amount	$ 591,096	$ 581,600
Actual, ratio	12.20%	12.30%
Required to be considered well capitalized, amount	$ 484,053	$ 471,385
Required to be considered well capitalized, ratio	10.00%	10.00%
Tier I Capital to Risk-Weighted Assets
Actual, amount	$ 530,458	$ 524,704
Actual, ratio	11.00%	11.10%
Required to be considered well capitalized, amount	$ 387,242	$ 377,108
Required to be considered well capitalized, ratio	8.00%	8.00%
Common Equity Tier 1 to Risk-Weighted Assets
Actual, amount	$ 530,458	$ 524,704
Actual, ratio	11.00%	11.10%
Required to be considered well capitalized, amount	$ 314,634	$ 306,400
Required to be considered well capitalized, ratio	6.50%	6.50%
Tier I Capital to Average Assets
Actual, amount	$ 530,458	$ 524,704
Actual, ratio	9.80%	11.00%
Required to be considered well capitalized, amount	$ 270,571	$ 238,963
Required to be considered well capitalized, ratio	5.00%	5.00%
Minimum Capital Required - Basel III Fully Phased-In
Total Capital to Risk-Weighted Assets
Minimum capital required, Basel III fully phased-in, amount	$ 508,386	$ 495,095
Minimum capital required, Basel III fully phased-in, ratio	10.50%	10.50%
Tier I Capital to Risk-Weighted Assets
Minimum capital required, Basel III fully phased-in, amount	$ 411,551	$ 400,791
Minimum capital required, Basel III fully phased-in, ratio	8.50%	8.50%
Common Equity Tier 1 to Risk-Weighted Assets
Minimum capital required, Basel III fully phased-in, amount	$ 338,924	$ 330,063
Minimum capital required, Basel III fully phased-in, ratio	7.00%	7.00%
Tier I Capital to Average Assets
Minimum capital required, Basel III fully phased-in, amount	$ 216,445	$ 191,099
Minimum capital required, Basel III fully phased-in, ratio	4.00%	4.00%
Minimum Capital Required - Basel III Fully Phased-In | Bank
Total Capital to Risk-Weighted Assets
Minimum capital required, Basel III fully phased-in, amount	$ 508,256	$ 494,954
Minimum capital required, Basel III fully phased-in, ratio	10.50%	10.50%
Tier I Capital to Risk-Weighted Assets
Minimum capital required, Basel III fully phased-in, amount	$ 411,445	$ 400,677
Minimum capital required, Basel III fully phased-in, ratio	8.50%	8.50%
Common Equity Tier 1 to Risk-Weighted Assets
Minimum capital required, Basel III fully phased-in, amount	$ 338,837	$ 329,970
Minimum capital required, Basel III fully phased-in, ratio	7.00%	7.00%
Tier I Capital to Average Assets
Minimum capital required, Basel III fully phased-in, amount	$ 216,457	$ 191,170
Minimum capital required, Basel III fully phased-in, ratio	4.00%	4.00%