Leases - Pinnacle Master Lease (Details)	Apr. 28, 2016 period facility
Pinnacle Master Lease
Lessee, Lease, Cost [Line Items]
Number of facilities with leased real estate | facility	12
Remaining lease term	7 years 6 months
Lease - expected term with renewal options	32 years 6 months
Lease Renewal Option One | Pinnacle Master Lease
Lessee, Lease, Cost [Line Items]
Number of options to extend lease | period	5
Pinnacle Master Lease
Lessee, Lease, Cost [Line Items]
Initial lease term	10 years
Adjusted annual escalator percentage	2.00%
Adjusted revenue to rent ratio, as defined	1.8
Percentage rent escalation interval	2 years
Percentage of average net revenues during preceding two years	4.00%
Percentage rent baseline period	2 years
Pinnacle Master Lease | Lease Renewal Option One
Lessee, Lease, Cost [Line Items]
Lease renewal term	5 years