Discontinued Operations (Details)	1 Months Ended	12 Months Ended
	Feb. 29, 2016 center	Dec. 31, 2016 property	Dec. 31, 2014 center
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of centers sold	1	12
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of centers sold			12
Discontinued Operations [Member] | Georgia [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of centers sold			3
Discontinued Operations [Member] | Florida [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of centers sold			2