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Maturities of Operating Lease Liabilities (Parenthetical) (Detail) | Sep. 28, 2020 USD ($)
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Leases [Abstract] |
Legally binding lease payments for leases signed but not yet commenced | $ 969,000

X
- Definition Lessee, operating lease, lease not yet commenced, liability incurred. + References No definition available. + Details
Name: | ttmi_LesseeOperatingLeaseLeaseNotYetCommencedLiabilityIncurred
Namespace Prefix: | ttmi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration