Accounts Receivable (Tables)

9 Months Ended

Sep. 30, 2014

Accounts Receivable [Abstract]

Schedule of Accounts Receivable

The components of Accounts receivable are summarized below:
 

(in thousands)	September 30, 2014			December 31, 2013
Trade and other accounts receivable	$	146,348		$	154,296
Revenue in excess of progress billings		9,799			20,525
Allowance for doubtful accounts		(8,664	)		(11,274	)
Total Accounts Receivable	$	147,483		$	163,547