CAPITAL REQUIREMENTS AND RESTRICTIONS ON RETAINED EARNINGS (Summary Of Capital Adequacy Requirements) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Consolidated Entities [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets), Actual Amount	$ 601,379	$ 541,475
Total Capital (to Risk Weighted Assets), Actual Ratio	14.20%	13.26%
Tier I Capital (to Risk Weighted Assets), Actual Amount	$ 552,836	$ 494,265
Tier I Capital (to Risk Weighted Assets), Actual Ratio	13.06%	12.10%
Common Equity Tier 1 (CET1), Actual Amount	$ 522,836	$ 464,265
Common Equity Tier 1 (CET1), Actual Ratio	12.35%	11.37%
Tier I Capital (to Average Assets), Actual Amount	$ 552,836	$ 494,265
Tier I Capital (to Average Assets), Actual Ratio	11.44%	10.76%
Total Capital (to Risk Weighted Assets), Minimum Required For Capital Adequacy Purposes Amount	$ 338,690	$ 326,782
Total Capital (to Risk Weighted Assets), Minimum Required For Capital Adequacy Purposes Ratio	8.00%	8.00%
Tier I Capital (to Risk Weighted Assets), Minimum Required For Capital Adequacy Purposes Amount	$ 254,017	$ 245,087
Tier I Capital (to Risk Weighted Assets), Minimum Required For Capital Adequacy Purposes Ratio	6.00%	6.00%
Common Equity Tier 1 (CET1), Minimum Required For Capital Adequacy Purposes Amount	$ 190,513	$ 183,815
Common Equity Tier 1 (CET1), Minimum Required For Capital Adequacy Purposes Ratio	4.50%	4.50%
Tier I Capital (to Average Assets), Minimum Required For Capital Adequacy Purposes Amount	$ 193,305	$ 183,793
Tier I Capital (to Average Assets), Minimum Required For Capital Adequacy Purposes Ratio	4.00%	4.00%
Excess Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer Amount	$ 418,070	$ 377,842
Tier I Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Plus Capital Conservation Buffer Amount	333,398	296,147
Common Equity Tier 1 (CET1), For Capital Adequacy Purposes Plus Capital Conservation Buffer Amount	269,893	234,875
Tier I Capital (to Average Assets), For Capital Adequacy Purposes Plus Capital Conservation Buffer Amount	193,305	183,793
Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets), Actual Amount	$ 583,206	$ 525,482
Total Capital (to Risk Weighted Assets), Actual Ratio	13.80%	12.89%
Tier I Capital (to Risk Weighted Assets), Actual Amount	$ 534,664	$ 478,272
Tier I Capital (to Risk Weighted Assets), Actual Ratio	12.65%	11.73%
Common Equity Tier 1 (CET1), Actual Amount	$ 534,664	$ 478,272
Common Equity Tier 1 (CET1), Actual Ratio	12.65%	11.73%
Tier I Capital (to Average Assets), Actual Amount	$ 534,664	$ 478,272
Tier I Capital (to Average Assets), Actual Ratio	11.06%	10.44%
Total Capital (to Risk Weighted Assets), Minimum Required For Capital Adequacy Purposes Amount	$ 338,098	$ 326,140
Total Capital (to Risk Weighted Assets), Minimum Required For Capital Adequacy Purposes Ratio	8.00%	8.00%
Tier I Capital (to Risk Weighted Assets), Minimum Required For Capital Adequacy Purposes Amount	$ 253,574	$ 244,605
Tier I Capital (to Risk Weighted Assets), Minimum Required For Capital Adequacy Purposes Ratio	6.00%	6.00%
Common Equity Tier 1 (CET1), Minimum Required For Capital Adequacy Purposes Amount	$ 190,180	$ 183,454
Common Equity Tier 1 (CET1), Minimum Required For Capital Adequacy Purposes Ratio	4.50%	4.50%
Tier I Capital (to Average Assets), Minimum Required For Capital Adequacy Purposes Amount	$ 193,312	$ 183,187
Tier I Capital (to Average Assets), Minimum Required For Capital Adequacy Purposes Ratio	4.00%	4.00%
Excess Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer Amount	$ 417,340	$ 377,099
Excess Capital to Risk Weighted Assets, For Capital Adequacy Purposes Plus Capital Conservation Buffer Ratio	9.875%	9.25%
Tier I Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Plus Capital Conservation Buffer Amount	$ 332,815	$ 295,564
Tier I Capital (to Risk Weighted Assets), For Capital Adequacy Purposes Plus Capital Conservation Buffer Ratio	7.875%	7.25%
Common Equity Tier 1 (CET1), For Capital Adequacy Purposes Plus Capital Conservation Buffer Amount	$ 269,422	$ 234,413
Common Equity Tier 1 (CET1), For Capital Adequacy Purposes Plus Capital Conservation Buffer Ratio	6.375%	5.75%
Tier I Capital (to Average Assets), For Capital Adequacy Purposes Plus Capital Conservation Buffer Amount	$ 193,312	$ 183,187
Tier I Capital (to Average Assets), For Capital Adequacy Purposes Plus Capital Conservation Buffer Ratio	4.00%	4.00%
Total Capital (to Risk Weighted Assets), Minimum Required to Be Well Capitalized Under Prompt Corrective Action Regulations Amount	$ 422,623	$ 407,675
Total Capital (to Risk Weighted Assets), Minimum Required to Be Well Capitalized Under Prompt Corrective Action Regulations Ratio	10.00%	10.00%
Tier I Capital (to Risk Weighted Assets), Minimum Required to Be Well Capitalized Under Prompt Corrective Action Regulations Amount	$ 338,098	$ 326,140
Tier I Capital (to Risk Weighted Assets), Minimum Required to Be Well Capitalized Under Prompt Corrective Action Regulations Ratio	8.00%	8.00%
Common Equity Tier 1 (CET1), Minimum Required to Be Well Capitalized Under Prompt Corrective Action Regulations Amount	$ 274,705	$ 264,988
Common Equity Tier 1 (CET1), Minimum Required to Be Well Capitalized Under Prompt Corrective Action Regulations Ratio	6.50%	6.50%
Tier I Capital (to Average Assets), Minimum Required to Be Well Capitalized Under Prompt Corrective Action Regulations Amount	$ 241,639	$ 228,984
Tier I Capital (to Average Assets), Minimum Required to Be Well Capitalized Under Prompt Corrective Action Regulations Ratio	5.00%	5.00%