Accounts Receivable (Tables)

9 Months Ended

Sep. 30, 2014

Accounts Receivable, Net [Abstract]

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

Accounts receivable consisted of the following as of September 30, 2014 and December 31, 2013 (dollars in thousands):

	September 30, 2014			December 31, 2013
Accounts receivable - trade	$	294,851		$	264,562
Accounts receivable - grants from outside parties	29,305			33,003
Accounts receivable - insurance and other third-party claims	30,208			31,643
Total accounts receivable	354,364			329,208
Less: Allowance for doubtful accounts	(5,455		)	(3,755		)
Accounts receivable, net	$	348,909		$	325,453