Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jul. 01, 2016	Jan. 01, 2016	Jan. 01, 2016
Activity related to goodwill and other intangible assets
Impairment loss on goodwill and other intangible assets		$ 0
Goodwill
Balance at the beginning of the period	$ 277,061		$ 192,523
Additions	44,478		84,538
Balance at the end of the period	321,539	277,061	277,061
Other Intangible Assets
Balance at the beginning of the period	64,629		54,402
Additions	5,191		10,253
Amortization	(9)	(26)	(26)
Balance at the end of the period	69,811	64,629	64,629
Visiting Nurse
Goodwill
Balance at the end of the period	193,421
Other Intangible Assets
Balance at the end of the period	60,346
Personal Care
Goodwill
Balance at the end of the period	74,526
Other Intangible Assets
Balance at the end of the period	9,465
Healthcare Innovations
Goodwill
Balance at the end of the period	53,592
Non-compete Agreements
Other Intangible Assets
Balance at the beginning of the period	184		20
Additions			180
Amortization	(4)	(16)	(16)
Balance at the end of the period	180	184	184
Non-compete Agreements | Visiting Nurse
Other Intangible Assets
Balance at the end of the period	90
Non-compete Agreements | Personal Care
Other Intangible Assets
Balance at the end of the period	90
Certificates of Need and Licenses
Other Intangible Assets
Balance at the beginning of the period	46,044		39,611
Additions	5,191		6,433
Balance at the end of the period	51,235	46,044	46,044
Certificates of Need and Licenses | Visiting Nurse
Other Intangible Assets
Balance at the end of the period	47,055
Certificates of Need and Licenses | Personal Care
Other Intangible Assets
Balance at the end of the period	4,180
Trade Names
Other Intangible Assets
Balance at the beginning of the period	18,401		14,771
Additions			3,640
Amortization	(5)	(10)	(10)
Balance at the end of the period	18,396	$ 18,401	$ 18,401
Trade Names | Visiting Nurse
Other Intangible Assets
Balance at the end of the period	13,201
Trade Names | Personal Care
Other Intangible Assets
Balance at the end of the period	$ 5,195