Accounts Receivable (Tables)

6 Months Ended

Jun. 30, 2013

ACCOUNTS RECEIVABLE: [Abstract]

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

Accounts receivable consisted of the following as of June 30, 2013 and December 31, 2012 (dollars in thousands):

	June 30, 2013			December 31, 2012
Accounts receivable - trade	$	262,729		$	212,405
Accounts receivable - grants	36,860			26,794
Accounts receivable - insurance claims	12,248			26,443
Total accounts receivable	311,837			265,642
Less: Allowance for doubtful accounts	(2,523		)	(2,693		)
Accounts receivable, net	$	309,314		$	262,949