Accounts Receivable

9 Months Ended

Sep. 30, 2011

Accounts Receivable, Net [Abstract]

Accounts Receivable

ACCOUNTS RECEIVABLE:

Accounts receivable consisted of the following as of September 30, 2011 and December 31, 2010 (dollars in thousands):

	September 30, 2011			December 31, 2010
Accounts receivable - trade	$	133,199		$	118,265
Accounts receivable - grants	15,161			17,039
Total accounts receivable	148,360			135,304
Less: Allowance for doubtful accounts	(2,878		)	(3,079		)
Accounts receivable, net	$	145,482		$	132,225