Accounts Receivable (Tables)

6 Months Ended

Jun. 30, 2013

Accounts Receivable [Abstract]

Schedule of Accounts Receivable

The components of Accounts receivable are summarized below:

(in thousands)	June 30, 2013	December 31, 2012
Trade accounts receivable	$154,279	$149,737
Revenue in excess of progress billings	15,688	17,105
Receivables related to the sale of discontinued businesses	16,795	16,555
Less: allowance for doubtful accounts	(11,881)	(11,862)
Total Accounts receivable, net	$174,881	$171,535