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Employee Stock Purchase and Stock Incentive Plans - Additional Information (Details) - USD ($)		12 Months Ended
	Apr. 30, 2021	Dec. 31, 2023	Dec. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options vesting period		5 years
Options granted (in shares)		0	0
Shares granted (in shares)		734,042
Number of unvested stock awards (in shares)		2,412,758
Number of unvested stock awards vesting start date		Jan. 01, 2024
Number of unvested stock awards vesting end date		Dec. 31, 2027
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		$ 1,000,000
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)		$ 29.24	$ 15.57
Cash payments received from exercise of options		$ 29,203	$ 29,203
Unrecognized compensation costs		$ 0
Common stock authorized and reserved for issuance (in shares)		4,128,557
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
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options vesting period		2 years 10 months 28 days
Shares granted (in shares)		245,710
Bowman Consulting Group Ltd. Stock Bonus Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation costs		$ 24,700,000	$ 13,700,000