Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2017

Accounting Policies [Abstract]

Percentage of Net Service Revenue Earned by Type of Ownership or Relationship with Operating Entity

The following table summarizes the percentage of net service revenue earned by type of ownership or relationship the Company had with the operating entity:

	Three Months Ended    September 30,				Nine Months Ended   September 30,
Ownership type	2017		2016		2017		2016
Wholly-owned subsidiaries	50.6	%	57.6	%	52.1	%	57.3	%
Equity joint ventures	47.5		40.7		46.1		41.0
Other	1.9		1.7		1.8		1.7
	100.0	%	100.0	%	100.0	%	100.0	%

Percentage of Net Service Revenue Earned by Category of Payor

The following table sets forth the percentage of net service revenue earned by category of payor for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended    September 30,				Nine Months Ended   September 30,
Payor:	2017		2016		2017		2016
Medicare	71.0	%	74.3	%	71.5	%	74.7	%
Medicaid	1.8		1.9		1.8		1.8
Managed Care, Commercial, and Other	27.2		23.8		26.7		23.5
	100.0	%	100.0	%	100.0	%	100.0	%

Shares Used in Computation of Basic and Diluted Per Share Information

The following table sets forth shares used in the computation of basic and diluted per share information:

	Three Months Ended    September 30,		Nine Months Ended   September 30,
	2017	2016	2017	2016
Weighted average number of shares outstanding for basic per share calculation	17,740,818	17,588,163	17,704,561	17,546,773
Effect of dilutive potential shares:
Options	—	—	—	1,146
Nonvested stock	269,704	131,310	227,139	116,365
Adjusted weighted average shares for diluted per share calculation	18,010,522	17,719,473	17,931,700	17,664,284
Anti-dilutive shares	—	20,001	137,400	214,856