Inventories (Tables)

3 Months Ended

Mar. 31, 2014

Inventory Disclosure [Abstract]

Major classes of inventories

Major classes of inventories are summarized as follows:

	March 31, 2014		December 31, 2013
Finished goods	$	206,711	$	167,577
Service parts	126,291		132,508
Raw materials and work in process	84,687		76,377
Total inventories	$	417,689	$	376,462