Inventories (Tables)

12 Months Ended

Dec. 31, 2014

Inventory Disclosure [Abstract]

Major classes of inventories

The following table summarizes the major classes of inventories as of December 31:

	2014		2013
Finished goods	$	197,429	$	167,577
Service parts	125,570		132,508
Raw materials and work in process	82,174		76,377
Total inventories	$	405,173	$	376,462