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Employee Stock Purchase and Stock Incentive Plans - Additional Information (Details) - USD ($)		12 Months Ended
	Apr. 30, 2021	Dec. 31, 2024	Dec. 31, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options granted (in shares)		0	0
Number of unvested stock awards (in shares)		1,782,871
Number of unvested stock awards vesting start date		Jan. 01, 2025
Number of unvested stock awards vesting end date		Jun. 30, 2028
Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options vesting period		5 years
Shares granted (in shares)		515,077	734,042
Number of unvested stock awards (in shares)		1,080,366	816,837
Performance Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares granted (in shares)		237,421
Number of unvested stock awards (in shares)		260,842
2021 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock purchase percentage	15.00%
Period prior to last day of offering period	30 days
Compensation costs		$ 1,500,000
Bowman Consulting Group Ltd. 2021 Omnibus Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation costs		$ 0	$ 0
Options granted (in shares)		0
Intrinsic value per share of options (in dollars per share)		$ 18.67	$ 29.24
Cash payments received from exercise of options		$ 28,205	$ 29,203
Unrecognized compensation costs		$ 0
Common stock authorized and reserved for issuance (in shares)		4,883,269
Percentage of common stock reserve automatically increases		5.00%
Bowman Consulting Group Ltd. 2021 Omnibus Equity Incentive Plan \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options vesting period		2 years
Bowman Consulting Group Ltd. 2021 Omnibus Equity Incentive Plan \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options vesting period		5 years
2021 Executive Officers Long Term Incentive Plan \| Performance Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options vesting period		3 years 4 months 13 days
Shares granted (in shares)		237,421
Bowman Consulting Group Ltd. Stock Bonus Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation costs		$ 24,400,000	$ 24,700,000
Bowman Consulting Group Ltd. Stock Bonus Plan \| Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares granted (in shares)		0