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ACCOUNTS RECEIVABLE
12 Months Ended
Dec. 31, 2011
Receivables [Abstract]  
ACCOUNTS RECEIVABLE
ACCOUNTS RECEIVABLE

Accounts receivable at December 31, 2011 and 2010, consisted of the following (amounts in thousands):
 
2011
 
2010
Accounts receivable
$
193,731

 
$
92,893

Allowance for doubtful accounts
(4,204
)
 
(3,889
)
Accounts receivable, net
$
189,527

 
$
89,004