Accounts Receivable (Tables)

3 Months Ended

Mar. 31, 2012

ACCOUNTS RECEIVABLE: [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

Accounts receivable consisted of the following as of March 31, 2012 and December 31, 2011 (dollars in thousands):

	March 31, 2012			December 31, 2011
Accounts receivable - trade	$	133,124		$	130,486
Accounts receivable - grants	17,799			20,753
Accounts receivable - insurance claims	15,256			17,336
Total accounts receivable	166,179			168,575
Less: Allowance for doubtful accounts	(3,028		)	(2,807		)
Accounts receivable, net	$	163,151		$	165,768