Cash Equivalents and Marketable Securities - Additional Information (Detail)	0 Months Ended
Mar. 28, 2015
Cash and Cash Equivalents [Abstract]
Contractual maturity due	5 months

Available for sale securities contractual maturity period.

No definition available.

Name:	tcco_AvailableForSaleSecuritiesContractualMaturityPeriod
Namespace Prefix:	tcco_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration