Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Schedule of selected unaudited quarterly financial data

The financial data presented below is the same for both Select Medical Holdings Corporation and Select Medical Corporation, except for income per common share which is limited to Select Medical Holdings Corporation.

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
	(in thousands, except per share amounts)
Year ended December 31, 2016
Net operating revenues	$	1,088,330	$	1,097,631	$	1,053,795	$	1,046,265
Income from operations	86,886		101,054		56,162		55,745
Net income attributable to Select Medical Holdings Corporation	54,833		33,935		6,471		20,172
Income per common share(1):
Basic	$	0.42	$	0.26	$	0.05	$	0.15
Diluted	$	0.42	$	0.26	$	0.05	$	0.15

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
	(in thousands, except per share amounts)
Year ended December 31, 2017
Net operating revenues	$	1,111,361	$	1,120,675	$	1,097,166	$	1,114,401
Income from operations	91,765		115,663		72,098		76,352
Net income attributable to Select Medical Holdings Corporation	15,870		42,055		18,462		100,797
Income per common share(1):
Basic	$	0.12	$	0.32	$	0.14	$	0.75
Diluted	$	0.12	$	0.32	$	0.14	$	0.75

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(1) Due to rounding, the summation of quarterly income per share balances may not equal year to date equivalents.