Divestiture (Spin-off of Nuvectra Corporation) (Details) - Spin-off [Member] - Nuvectra [Member] $ in Thousands		3 Months Ended
	Mar. 14, 2016 USD ($)	Apr. 01, 2016 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Stock conversion ratio	3
Cash capital contribution		$ 75,000
Assets divested
Cash and cash equivalents	$ 76,256
Other current assets	977
Property, plant and equipment, net	4,407
Amortizing intangible assets, net	1,931
Goodwill	40,830
Deferred income taxes	6,446
Total assets divested	130,847
Liabilities transferred
Current liabilities	2,119
Net assets divested	$ 128,728
Pre-tax loss		$ 5,200