Inventories (Tables)

9 Months Ended

Sep. 30, 2013

Inventory Disclosure [Abstract]

Major classes of inventories

Major classes of inventories are summarized as follows:

	September 30, 2013		December 31, 2012
Finished goods	$	228,931	$	183,286
Service parts	144,157		151,189
Raw materials and work in process	107,332		78,521
Total inventories	$	480,420	$	412,996