Commitments and Contingencies (Details) - Schedule of remaining payments $ in Thousands	Dec. 31, 2021 USD ($)
Schedule of remaining payments [Abstract]
2022	$ 956
2023	725
2024	511
Total	$ 2,192

Amount of required minimum rental payments for operating leases future remaining payments due year three.

No definition available.

Name:	atcx_FutureRemainingPaymentsDueYearThree
Namespace Prefix:	atcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant