Receivables (Tables)
 3 Months Ended
Mar. 29, 2019
Receivables [Abstract]  
Schedule of Receivables
Receivables were comprised of the following:
 
 
March 29,
 
December 31,
(In thousands)
 
2019
 
2018
Billed receivables
 
$
42,147

 
$
44,868

Unbilled receivables (contract assets)
 
195,696

 
181,009

Other
 
6,273

 
6,242

Total receivables
 
$
244,116

 
$
232,119