Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Jan. 01, 2016		Jan. 02, 2015		Jan. 03, 2014
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		$ 1,411		$ 2,001		$ 2,372
Charged to Costs & Expenses		(70)		98		(93)
Charged to Other Accounts	[2]	459	[1]	14		(15)	[1]
Deductions	[3]	(846)		(702)		(263)
Balance at End of Period		954		1,411		2,001
Valuation Allowance of Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		10,709		11,661		12,768
Charged to Costs & Expenses	[4]	788		(729)		(1,263)
Charged to Other Accounts	[2]	27,836		0		32
Deductions		(162)	[4],[5]	(223)	[4]	124	[5]
Balance at End of Period		$ 39,171		$ 10,709		$ 11,661

[1] Balance recorded as a part of our 2015 acquisition of Lake Region Medical and our 2014 acquisition of Centro de Construcción de Cardioestimuladores del Uruguay

[2] Includes foreign currency translation effect.

[3] Accounts written off.

[4] Valuation allowance recorded in the provision for income taxes for certain net operating losses and tax credits. The net decrease in allowance in 2014 and 2013 primarily relates to the use of net operating loss carryforwards.

[5] Primarily relates to return to provision adjustments for prior years.