XML 19 R39.htm IDEA: XBRL DOCUMENT v2.4.0.6
Leases (Tables)
12 Months Ended
Dec. 31, 2011
Leases  
Future minimum lease payments required under our leasing arrangements

 

 

 
  2012   2013   2014   2015   2016   Thereafter  

Future minimum lease payments

  $ 16,700   $ 14,900   $ 14,200   $ 11,500   $ 8,500   $ 12,000