Summary of Fair Value of Interest Rate Swaps (Details) - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016
Interest Rate Swap [Member] \| Other Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Fair value	$ (16)	$ (100)

Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959

Name:	us-gaap_InterestRateCashFlowHedgeLiabilityAtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant