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Receivables (Tables)
6 Months Ended
Jun. 30, 2017
Receivables [Abstract]  
Schedule of Receivables
Receivables were comprised of the following:
 
 
June 30,
 
December 31,
(In thousands)
 
2017
 
2016
Billed receivables
 
$
35,654

 
$
41,992

Unbilled contract receivables
 
126,651

 
127,150

Other
 
2,777

 
2,930

Receivables
 
$
165,082

 
$
172,072