Employee Stock Purchase and Stock Incentive Plans - Additional Information (Details) - USD ($)		6 Months Ended
Apr. 30, 2021	Jun. 30, 2026
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares vested (in shares)		1,175,195
Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options vesting period (in years)		5 years
Number of shares granted (in shares)		389,512
Number of shares vested (in shares)		308,401
Performance Based Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares granted (in shares)		59,976
Number of shares vested (in shares)		64,808
Two Thousand Twenty One Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock purchase (in percent)	15.00%
Period prior to last day of offering period (in days)	30 days
Bowman Consulting Group Ltd. 2021 Omnibus Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
New option shares granted (in shares)		0
Total Outstanding (in shares)		0
Unrecognized compensation costs		$ 0
Common stock authorized and reserved for issuance (in shares)		6,612,079
Common stock reserve automatically increases (in percent)		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 (in years)		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 (in years)		5 years
Bowman Consulting Group Ltd. Stock Bonus Plan \| Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares granted (in shares)		0
2021 Executive Officers Long Term Incentive Plan \| Performance Based Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares granted (in shares)		59,976
2021 Executive Officers Long Term Incentive Plan \| Minimum \| Performance Based Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options vesting period (in years)		2 years 8 months 1 day
2021 Executive Officers Long Term Incentive Plan \| Maximum \| Performance Based Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options vesting period (in years)		4 years

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