XML 33 R11.htm IDEA: XBRL DOCUMENT v2.4.0.6
Inventory
12 Months Ended
Dec. 31, 2011
Inventory [Abstract]  
Inventory
Inventory

Inventory at December 31, 2011 and December 31, 2010, of $3.4 and $3.0 million, respectively, consists of parts and small equipment held for use in the ordinary course of business.