Condensed Consolidated and Combined Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 27, 2015	Mar. 29, 2014
Operating activities
Net income	$ 4,965us-gaap_NetIncomeLoss	$ 11,235us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization expense	920	735
Stock-based compensation	1,879us-gaap_ShareBasedCompensation	0us-gaap_ShareBasedCompensation
Amortization of debt issuance costs	185us-gaap_AmortizationOfFinancingCosts	0us-gaap_AmortizationOfFinancingCosts
Changes in assets and liabilities:
Receivables	(9,589)us-gaap_IncreaseDecreaseInReceivables	(42,219)us-gaap_IncreaseDecreaseInReceivables
Other assets	(14,409)	(1,847)
Accounts payable	(10,784)	(9,087)
Billings in excess of costs	4,967	(7,184)
Deferred taxes	(2,071)	(381)
Compensation and other employee benefits	(3,393)	(10,577)
Other liabilities	101	2,874
Net cash used in operating activities	(27,229)	(56,451)
Investing activities
Purchases of capital expenditures	(465)	(507)
Net cash used in investing activities	(465)	(507)
Financing activities
Proceeds from insurance financing	14,857	0
Payment of employee withholding taxes on share-based compensation	(724)	0
Transfer to Former Parent, net	0vec_ProceedsfromPaymentstoParentNet	53,913vec_ProceedsfromPaymentstoParentNet
Net cash provided by financing activities	14,133	53,913
Exchange rate effect on cash	(513)	(38)
Net change in cash	(14,074)	(3,083)
Cash-beginning of year	42,823us-gaap_Cash	10,446us-gaap_Cash
Cash-end of period	28,749us-gaap_Cash	7,363us-gaap_Cash
Supplemental Disclosure of Cash Flow Information:
Interest paid	915us-gaap_InterestPaidNet	7us-gaap_InterestPaidNet
Income taxes paid	37us-gaap_IncomeTaxesPaidNet	0us-gaap_IncomeTaxesPaidNet
Non-cash investing activities:
Purchase of capital expenditures on account	$ 34	$ 24

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