Nature of Business and Basis of Presentation - Textual (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 26, 2016	Mar. 28, 2015
Accounting Policies [Line Items]
Fiscal year/fiscal quarter duration	91 days	91 days
Products	$ 39,214	$ 38,339
Cost of products	$ 18,079	19,992
Maximum period of delivery to customers	6 months
Maximum period services are provided over the fixed arrangement term	12 months
Reclassification [Member]
Accounting Policies [Line Items]
Products		4,600
Cost of products		$ 1,800
Minimum [Member]
Accounting Policies [Line Items]
Fiscal year/fiscal quarter duration	364 days
Maximum [Member]
Accounting Policies [Line Items]
Fiscal year/fiscal quarter duration	371 days

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+ References

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Total costs related to goods produced and sold during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a))
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a))
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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