Discontinued Operations and Assets Held For Sale - Additional Information (Detail)	9 Months Ended	12 Months Ended
	Sep. 30, 2013 Agencies	Dec. 31, 2013 Agencies	Dec. 31, 2012 Agencies	Dec. 31, 2011 Agencies
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of care centers consolidated		46
Number of care centers closed		10	3	29
Number of care centers available for sale	28	3
Number of care centers sold		20
Home Health [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of care centers consolidated		41	5	27
Number of care centers closed		10	3	27
Number of care centers start-up process discontinued				2
Number of care centers available for sale		3
Number of care centers sold		19
Number of care centers included in discontinued operations		32	3	27
Hospice [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of care centers consolidated		5	4	5
Number of care centers closed				2
Number of care centers available for sale		0
Number of care centers sold		1
Number of care centers included in discontinued operations		1		2