LEASES - Supplemental Cash Flow Information (Details)	6 Months Ended
Sep. 30, 2020 USD ($)
LEASES
Cash used in operating activities	$ 1,883
Cash used in financing activities	$ 5,807

Payments From Financing Activities Relating To Leases.

No definition available.

Name:	tpcs_PaymentsFromFinancingActivitiesRelatingToLeases
Namespace Prefix:	tpcs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration