Cost Savings Initiatives and Other Restructuring Costs, Acquisition and Integration Activities and Legal Settlements (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Restructuring Charges	$ 141,000	$ 5,391,000
Restructuring Reserve	1,411,000	13,333,000	2,696,000	38,379,000
Cost Savings and Other Restructuring [Member]
Segment Reporting Information [Line Items]
Restructuring Charges	47,000	842,000
Restructuring Reserve	628,000	6,005,000	1,685,000	8,671,000
Acquisition & Integration [Member]
Segment Reporting Information [Line Items]
Restructuring Charges	94,000	(409,000)
Restructuring Reserve	783,000	2,328,000	1,011,000	3,708,000
Legal Settlements [Member]
Segment Reporting Information [Line Items]
Restructuring Charges	0	4,958,000
Restructuring Reserve	0	5,000,000	0	26,000,000
Payments for Legal Settlements		$ 26,000,000
Home Health [Member]
Segment Reporting Information [Line Items]
Number of branches divested		46