Property and equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property Plant And Equipment [Abstract]

Property and Equipment

Property and equipment were comprised of the following:

	December 31,
	2014			2013
Land	$	35,885		$	34,960
Buildings		157,550			157,998
Leasehold improvements		2,002,735			1,762,470
Equipment and information systems		2,066,775			1,839,981
New center and capital asset projects in progress		235,660			172,261
		4,498,605			3,967,670
Less accumulated depreciation		(2,029,506	)		(1,778,259	)
	$	2,469,099		$	2,189,411