LEASES - Maturities of lease liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Mar. 31, 2026
Maturities of lease liabilities
July 1, 2026 - June 30, 2027	$ 957
July 1, 2027 - June 30, 2028	957
July 1, 2028 - June 30, 2029	957
July 1, 2029 - June 30, 2030	957
July 1, 2030 - June 30, 2031	12
Total lease payments	3,840
Less: imputed interest	326
Total lease liability	$ 3,514	$ 3,664

Amount of lease liabilities during the period.

No definition available.

Name:	tpcs_LeaseLiability
Namespace Prefix:	tpcs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's interest amount for lease payments in excess of discounted obligation for lease payments for operating and finance lease.

+ References

No definition available.

+ Details

Name:	tpcs_LesseeLeaseLiabilityImputedInterest
Namespace Prefix:	tpcs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payment for operating and finance lease.

+ References

No definition available.

+ Details

Name:	tpcs_LesseeLeaseLiabilityPaymentsDue
Namespace Prefix:	tpcs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payment for operating and finance lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

+ Details

Name:	tpcs_LesseeLeaseLiabilityPaymentsDueNextTwelveMonths
Namespace Prefix:	tpcs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payment for operating and finance lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

+ Details

Name:	tpcs_LesseeLeaseLiabilityPaymentsToBePaidYearFive
Namespace Prefix:	tpcs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payment for operating and finance lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

+ Details

Name:	tpcs_LesseeLeaseLiabilityPaymentsToBePaidYearFour
Namespace Prefix:	tpcs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payment for operating and finance lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

+ Details

Name:	tpcs_LesseeLeaseLiabilityPaymentsToBePaidYearThree
Namespace Prefix:	tpcs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payment for operating and finance lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

+ Details

Name:	tpcs_LesseeLeaseLiabilityPaymentsToBePaidYearTwo
Namespace Prefix:	tpcs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	tpcs_LesseeOperatingAndFinanceLeaseLiabilityToBePaidFiscalYearMaturityAbstract
Namespace Prefix:	tpcs_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration