Geographic Information (Tables)

12 Months Ended

Dec. 31, 2015

Segments, Geographical Areas [Abstract]

Revenues By Geographic Areas

Our revenues and long-lived assets related to the following geographic areas:

Revenues	2015		2014	2013
United States	$	3,441,141	3,308,226	2,951,673
Canada	223,270		238,590	227,756
Other foreign countries	204,776		186,691	146,677
	$	3,869,187	3,733,507	3,326,106

Long-Lived Assets By Geographic Areas

Long-Lived Assets	2015		2014	2013
United States	$	821,063	725,189	632,783
Canada	32,290		37,580	22,572
Other foreign countries	14,333		13,068	11,968
	$	867,686	775,837	667,323