Accounts Receivable (Tables)

9 Months Ended

Sep. 30, 2013

Accounts Receivable [Abstract]

Schedule of Accounts Receivable

The components of Accounts receivable are summarized below:

(in thousands)	September 30, 2013	December 31, 2012
Trade accounts receivable	$150,033	$149,737
Revenue in excess of progress billings	16,868	17,105
Receivables related to the sale of discontinued businesses	3,795	16,555
Less: allowance for doubtful accounts	(11,903)	(11,862)
Total Accounts receivable, net	$158,793	$171,535