Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net operating revenues	$ 4,443,603	$ 4,286,021	$ 3,742,736
Costs and expenses:
Cost of services	3,734,176	3,664,843	3,211,541
General and administrative	114,047	106,927	92,052
Bad debt expense	79,491	69,093	59,372
Depreciation and amortization	160,011	145,311	104,981
Total costs and expenses	4,087,725	3,986,174	3,467,946
Income from operations	355,878	299,847	274,790
Other income and expense:
Loss on early retirement of debt	(19,719)	(11,626)	0
Equity in earnings of unconsolidated subsidiaries	21,054	19,943	16,811
Non-operating gain (loss)	(49)	42,651	29,647
Interest income (expense)	(154,703)	(170,081)	(112,816)
Income before income taxes	202,461	180,734	208,432
Income tax expense (benefit)	(18,184)	55,464	72,436
Net income	220,645	125,270	135,996
Less: Net income attributable to non-controlling interests	43,461	9,859	5,260
Net income attributable to Select Medical Holdings Corporation	$ 177,184	$ 115,411	$ 130,736
Basic (in dollars per share)	$ 1.33	$ 0.88	$ 1.00
Diluted (in dollars per share)	1.33	0.87	0.99
Dividends paid per share (in dollars per shares)	$ 0	$ 0	$ 0.10
Weighted average shares outstanding:
Basic (in shares)	128,955	127,813	127,478
Diluted (in shares)	129,126	127,968	127,752
Select
Net operating revenues	$ 4,443,603	$ 4,286,021	$ 3,742,736
Costs and expenses:
Cost of services	3,734,176	3,664,843	3,211,541
General and administrative	114,047	106,927	92,052
Bad debt expense	79,491	69,093	59,372
Depreciation and amortization	160,011	145,311	104,981
Total costs and expenses	4,087,725	3,986,174	3,467,946
Income from operations	355,878	299,847	274,790
Other income and expense:
Loss on early retirement of debt	(19,719)	(11,626)	0
Equity in earnings of unconsolidated subsidiaries	21,054	19,943	16,811
Non-operating gain (loss)	(49)	42,651	29,647
Interest income (expense)	(154,703)	(170,081)	(112,816)
Income before income taxes	202,461	180,734	208,432
Income tax expense (benefit)	(18,184)	55,464	72,436
Net income	220,645	125,270	135,996
Less: Net income attributable to non-controlling interests	43,461	9,859	5,260
Net income attributable to Select Medical Holdings Corporation	$ 177,184	$ 115,411	$ 130,736