Forward Air Corporation Quarterly report [Sections 13 or 15(d)]

Noncontrolling Interest - Narrative (Details) - shares shares in Thousands	3 Months Ended					9 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Variable Interest Entity, Not Primary Beneficiary \| Opco
Noncontrolling Interest [Line Items]
Outstanding shares percentage	10.40%			3.30%		10.40%	3.30%
Common Class A \| Variable Interest Entity, Not Primary Beneficiary \| Opco
Noncontrolling Interest [Line Items]
Number of shares held (in shares)	30,980					30,980
Common Class B
Noncontrolling Interest [Line Items]
Number of shares held (in shares)	8,869	9,423	9,503	11,138	12,105	8,869	11,138	10,088	4,435	0
Partners' capital account, units, converted	(554)	(80)	(585)	(967)	7,670
Common Class B \| Variable Interest Entity, Not Primary Beneficiary \| Opco
Noncontrolling Interest [Line Items]
Number of shares held (in shares)	8,869					8,869
Partners' capital account, units, converted						3,236	967
Series B preferred shares \| Variable Interest Entity, Not Primary Beneficiary \| Opco
Noncontrolling Interest [Line Items]
Number of shares held (in shares)	8,869					8,869
Common Stock \| Variable Interest Entity, Not Primary Beneficiary \| Opco
Noncontrolling Interest [Line Items]
Number of shares held (in shares)	8,869					8,869
Partners' capital account, units, converted						3,236	967