Contract Receivables (Tables)

6 Months Ended

Jun. 30, 2015

Contract Receivables [Abstract]

Components of contract receivables

The components of contract receivables are as follows:

(in thousands)	June 30,			December 31,
	2015			2014
Billed receivables	$	10,410		$	10,792
Recoverable costs and accrued profit not billed		5,554			5,060
Allowance for doubtful accounts		(2	)		(22	)
Total contract receivables, net	$	15,962		$	15,830

Concentration Risk [Line Items]

Contract receivable by major customers

The following customers accounted for more than 10% of the Company's consolidated contract receivables as of June 30, 2015 and December 31, 2014, respectively:

	June 30, 2015	December 31, 2014
China Nuclear Power Engineering Company	15.2 %	3.9 %
State Nuclear Power Automation System Engineering Co.	5.8 %	10.2 %