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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2018
Property Plant And Equipment [Abstract]  
Property, Plant and Equipment

At December 31, 2018 and 2017, property, plant and equipment were comprised of the following:

 

(In thousands)

 

2018

 

 

2017

 

Land

 

$

4,575

 

 

$

4,575

 

Building and land improvements

 

 

34,379

 

 

 

32,470

 

Building

 

 

68,183

 

 

 

68,301

 

Furniture and fixtures

 

 

19,831

 

 

 

19,489

 

Computer hardware and software

 

 

92,071

 

 

 

90,726

 

Engineering and other equipment

 

 

127,060

 

 

 

123,363

 

Total Property, Plant and Equipment

 

 

346,099

 

 

 

338,924

 

Less accumulated depreciation

 

 

(265,464

)

 

 

(253,845

)

Total Property, Plant and Equipment, net

 

$

80,635

 

 

$

85,079