Geographic Information (Tables)

12 Months Ended

Dec. 31, 2014

Long Lived Assets

Geographic Information for Long-Lived Assets and Revenues in United States and other Countries

Long-lived assets, consisting of net property, plant and equipment and other long-term assets, as of December 31 in the United States and other countries are as follows:

	2014		2013		2012
Long-lived assets:
United States	$	561,109	$	454,031	$	403,534
International (primarily China and Russia)		18,052		35,372		36,535
Total	$	579,161	$	489,403	$	440,069

Revenues From External Customers

Geographic Information for Long-Lived Assets and Revenues in United States and other Countries

Revenues for the years ended December 31 in the United States, Canada and other countries are as follows:

	2014		2013		2012
Revenues:
United States	$	491,004	$	529,603	$	500,106
Canada		73,092		43,329		30,929
Other international		84,229		94,466		114,501
Total	$	648,325	$	667,398	$	645,536