Business (Narrative) (Details)	Sep. 30, 2017 state center bed
Accounting Policies [Line Items]
Number of states in which entity operates | state	10
Number of nursing centers | center	76
Number of licensed nursing beds	8,457
Number of nursing center facilities owned | center	18
Number of nursing center facilities leased | center	58
Number of licensed assisted and residential living beds	496
Minimum
Accounting Policies [Line Items]
Number of licensed nursing beds per center	48
Maximum
Accounting Policies [Line Items]
Number of licensed nursing beds per center	320