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Deferred Revenue and Customer Advances (Detail) (USD $) In Thousands, unless otherwise specified | Apr. 05, 2015 | Dec. 31, 2014 | Mar. 30, 2014 | Dec. 31, 2013
--- | --- | --- | --- | ---
Deferred Revenue Arrangement |  |  |  |
Extended warranty | $ 40,704 us-gaap_ExtendedProductWarrantyAccrual | $ 43,300 us-gaap_ExtendedProductWarrantyAccrual | $ 33,949 us-gaap_ExtendedProductWarrantyAccrual | $ 34,909 us-gaap_ExtendedProductWarrantyAccrual
Product maintenance and training | 29,820 ter_DeferredRevenueAndCustomerAdvancesMaintenanceAndTraining | 30,500 ter_DeferredRevenueAndCustomerAdvancesMaintenanceAndTraining |  |
Customer advances | 8,884 us-gaap_CustomerAdvancesAndDeposits | 8,875 us-gaap_CustomerAdvancesAndDeposits |  |
Undelivered elements and other | 13,162 ter_DeferredRevenueAndCustomerAdvancesUndeliveredElementsAndOther | 8,857 ter_DeferredRevenueAndCustomerAdvancesUndeliveredElementsAndOther |  |
Total deferred revenue and customer advances | $ 92,570 ter_DeferredRevenueAndCustomerAdvances | $ 91,532 ter_DeferredRevenueAndCustomerAdvances |  |

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- Definition Deferred revenue and customer advances maintenance and training. + References No definition available. + Details
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- Definition Deferred revenue and customer advances undelivered elements and other. + References No definition available. + Details
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- Definition Refundable consideration, usually cash, held by the entity pending satisfactory completion of the entity's obligations or pending the closing of a contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15a) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Amount as of the balance sheet date of the aggregate extended product warranty liability. Does not include the ending balance for the standard product warranty liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (c)(1),(c)(5) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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