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Goodwill and Other Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The change in the carrying amount of goodwill by segment is as follows (in thousands):
 
Total
 
Weighing and Control Systems Segment
 
Foil Technology Products Segment
 
 
 
KELK Acquisition
 
Stress-Tek Acquisition
 
Pacific Instruments
Balance at January 1, 2017
18,717

 
6,364

 
6,311

 
6,042

Foreign currency translation adjustment
464

 
464

 
—

 
—

Balance at December 31, 2017
19,181

 
6,828

 
6,311

 
6,042

Impairment charges
(2,500
)
 
—

 
—

 
(2,500
)
Foreign currency translation adjustment
(540
)
 
(540
)
 
—

 
—

Balance at December 31, 2018
16,141

 
6,288

 
6,311

 
3,542
Schedule of Finite-Lived Intangible Assets
Intangible assets were as follows (in thousands):
 
December 31,
 
2018
 
2017
Intangible assets subject to amortization
 
 
 
(Definite-lived):
 
 
 
Patents and acquired technology
$
9,067

 
$
9,439

Customer relationships
20,941

 
21,810

Trade names
1,674

 
1,693

Non-competition agreements
11,820

 
12,084

 
43,502

 
45,026

Accumulated amortization:
 
 
 
Patents and acquired technology
(4,103
)
 
(3,839
)
Customer relationships
(10,399
)
 
(9,657
)
Trade names
(1,674
)
 
(1,688
)
Non-competition agreements
(11,748
)
 
(11,850
)
 
(27,924
)
 
(27,034
)
Net intangible assets subject to amortization
$
15,578

 
$
17,992

 
 
 
 
Intangible assets not subject to amortization
 
 
 
(Indefinite-lived):
 
 
 
Trade names
2,078

 
2,483


$
17,656

 
$
20,475
Schedule of Expected Amortization Expense
Estimated annual amortization expense for each of the next five years is as follows (in thousands):
2019
$
1,530

2020
1,499

2021
1,450

2022
1,449

2023
1,349