Regulatory Matters (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total amount available for payment of dividends	$ 73,700
Maximum allowed percentage of loans issued to a single affiliate	10.00%
Maximum allowed percentage of loans issued to all affiliates	20.00%
Total Capital (to Risk-Weighted Assets):
Capital	$ 2,841,529	$ 2,837,801
Capital to risk weighted assets	0.141	0.144
Capital required for capital adequacy	$ 1,610,429	$ 1,571,876
Capital required for capital adequacy to risk weighted assets	0.080	0.080
Tier I Capital (to Risk-Weighted Assets):
Tier one risk based capital	$ 2,195,647	$ 2,067,640
Tier one risk based capital to risk weighted assets	0.109	0.105
Tier one risk based capital required for capital adequacy	$ 1,207,822	$ 1,178,907
Tier one risk based capital required for capital adequacy to risk weighted assets	0.060	0.060
Common Equity Tier I Capital (to Risk-Weighted Assets):
Common equity tier 1 capital	$ 2,002,769	$ 1,874,762
Common equity tier one capital ratio	0.099	0.095
Common equity tier one capital required for capital adequacy	$ 905,866	$ 884,181
Common equity tier one capital required for capital adequacy to risk weighted assets	4.50%	4.50%
Tier I Leverage Capital (to Average Assets):
Tier one leverage capital	$ 2,195,647	$ 2,067,640
Tier one leverage capital to average assets	0.086	0.082
Tier one leverage capital required for capital adequacy	$ 1,023,787	$ 1,009,469
Tier one leverage capital required for capital adequacy to average assets	0.040	0.040
Fulton Bank, N.A.
Total Capital (to Risk-Weighted Assets):
Capital	$ 2,591,332	$ 2,758,963
Capital to risk weighted assets	0.129	0.141
Capital required for capital adequacy	$ 1,602,597	$ 1,562,322
Capital required for capital adequacy to risk weighted assets	0.080	0.080
Capital required to be well capitalized	$ 2,003,246	$ 1,952,903
Capital required to be well capitalized to risk weighted assets	0.100	0.100
Tier I Capital (to Risk-Weighted Assets):
Tier one risk based capital	$ 2,395,890	$ 2,529,802
Tier one risk based capital to risk weighted assets	0.120	0.130
Tier one risk based capital required for capital adequacy	$ 1,201,948	$ 1,171,742
Tier one risk based capital required for capital adequacy to risk weighted assets	0.060	0.060
Tier one risk based capital required to be well capitalized	$ 1,602,597	$ 1,562,322
Tier one risk based capital required to be well capitalized to risk weighted assets	0.080	0.080
Common Equity Tier I Capital (to Risk-Weighted Assets):
Common equity tier 1 capital	$ 2,351,890	$ 2,485,802
Common equity tier one capital ratio	0.117	0.127
Common equity tier one capital required for capital adequacy	$ 901,461	$ 878,806
Common equity tier one capital required for capital adequacy to risk weighted assets	4.50%	4.50%
Common equity tier one capital required to be well-capitalized	$ 1,302,110	$ 1,269,387
Common equity tier one capital required to be well capitalized to risk weighted assets	6.50%	6.50%
Tier I Leverage Capital (to Average Assets):
Tier one leverage capital	$ 2,395,890	$ 2,529,802
Tier one leverage capital to average assets	0.094	0.101
Tier one leverage capital required for capital adequacy	$ 1,017,083	$ 1,001,313
Tier one leverage capital required for capital adequacy to average assets	0.040	0.040
Tier one leverage capital required to be well capitalized	$ 1,271,354	$ 1,251,641
Tier one leverage capital required to be well capitalized to average assets	0.050	0.050