Revenues (Details) $ in Thousands	Jan. 01, 2018 USD ($)
Accounts Receivable [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 765
Inventories [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	(223)
Accrued Liabilities [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	1,276
Deferred tax liability [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	(144)
Retained Earnings [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ (590)