Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Noncontrolling Interest [Line Items]
Net (gain) loss attributable to noncontrolling interests	$ (725)	$ 133	$ (1,485)	$ 323
C H S Home Health
Noncontrolling Interest [Line Items]
Net (gain) loss attributable to noncontrolling interests	(878)		(1,819)
Imperium
Noncontrolling Interest [Line Items]
Net (gain) loss attributable to noncontrolling interests	(164)	(185)	(273)	(335)
Other
Noncontrolling Interest [Line Items]
Net (gain) loss attributable to noncontrolling interests	$ (11)	$ (52)	$ 61	$ (12)