Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current Assets:
Cash and cash equivalents	$ 6,588	$ 3,354
Accounts receivable, net of allowance for doubtful accounts of $46,425 and $48,572 at 2014 and 2015, respectively	493,409	444,269
Current deferred tax asset	15,961	15,991
Prepaid income taxes		17,888
Other current assets	52,093	46,142
Total Current Assets	568,051	527,644
Property and equipment, net	553,870	542,310
Goodwill	1,652,005	1,642,083
Other identifiable intangibles	72,640	72,519
Other assets	140,485	140,253
Total Assets	2,987,051	2,924,809
Current Liabilities:
Bank overdrafts	18,925	21,746
Current portion of long-term debt and notes payable	11,060	10,874
Accounts payable	101,013	108,532
Accrued payroll	80,382	97,090
Accrued vacation	65,929	63,132
Accrued interest	21,805	10,674
Accrued other	87,073	82,376
Income taxes payable	6,776
Total Current Liabilities	392,963	394,424
Long-term debt, net of current portion	1,569,627	1,542,102
Non-current deferred tax liability	106,702	109,203
Other non-current liabilities	98,245	92,855
Total Liabilities	2,167,537	2,138,584
Commitments and contingencies (Note 8)
Redeemable non-controlling interests	11,275	10,985
Stockholders' Equity:
Common stock	131	131
Capital in excess of par	418,288	413,706
Retained earnings (accumulated deficit)	347,303	325,678
Total Select Medical Holdings Corporation and Select Medical Corporation Stockholders' Equity	765,722	739,515
Non-controlling interest	42,517	35,725
Total Equity	808,239	775,240
Total Liabilities and Equity	2,987,051	2,924,809
Select
Current Assets:
Cash and cash equivalents	6,588	3,354
Accounts receivable, net of allowance for doubtful accounts of $46,425 and $48,572 at 2014 and 2015, respectively	493,409	444,269
Current deferred tax asset	15,961	15,991
Prepaid income taxes		17,888
Other current assets	52,093	46,142
Total Current Assets	568,051	527,644
Property and equipment, net	553,870	542,310
Goodwill	1,652,005	1,642,083
Other identifiable intangibles	72,640	72,519
Other assets	140,485	140,253
Total Assets	2,987,051	2,924,809
Current Liabilities:
Bank overdrafts	18,925	21,746
Current portion of long-term debt and notes payable	11,060	10,874
Accounts payable	101,013	108,532
Accrued payroll	80,382	97,090
Accrued vacation	65,929	63,132
Accrued interest	21,805	10,674
Accrued other	87,073	82,376
Income taxes payable	6,776
Total Current Liabilities	392,963	394,424
Long-term debt, net of current portion	1,569,627	1,542,102
Non-current deferred tax liability	106,702	109,203
Other non-current liabilities	98,245	92,855
Total Liabilities	2,167,537	2,138,584
Commitments and contingencies (Note 8)
Redeemable non-controlling interests	11,275	10,985
Stockholders' Equity:
Common stock	0	0
Capital in excess of par	889,989	885,407
Retained earnings (accumulated deficit)	(124,267)	(145,892)
Total Select Medical Holdings Corporation and Select Medical Corporation Stockholders' Equity	765,722	739,515
Non-controlling interest	42,517	35,725
Total Equity	808,239	775,240
Total Liabilities and Equity	$ 2,987,051	$ 2,924,809