XML 22 R13.htm IDEA: XBRL DOCUMENT  v2.3.0.11
INVENTORIES
6 Months Ended
Jun. 30, 2011
INVENTORIES
8.     INVENTORIES
 
Inventories of $78,657,000 at June 30, 2011 and $64,059,000 at December 31, 2010 consist of raw materials, parts and supplies.