Significant Accounting Policies (Details) - USD ($) $ in Thousands		3 Months Ended
	Jan. 13, 2016	Mar. 31, 2016	Mar. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Increase (decrease) in inventories		$ 264	$ (885)
Amortization of inventory fair value step - up		734	0
Patents and know-how
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net of accumulated amortization		147	$ 201
Fair Value Adjustment to Inventory
Finite-Lived Intangible Assets [Line Items]
Increase (decrease) in inventories	$ 2,300	$ 1,600