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Depreciation and Amortization Expenses by Reportable Segment (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Depreciation and Amortization Expenses      
Depreciation and amortization expenses $ 43,394 $ 38,293 $ 38,280
Unallocated Corporate and Shared Services      
Depreciation and Amortization Expenses      
Depreciation and amortization expenses 254 215 268
Photonics | Operating Segments      
Depreciation and Amortization Expenses      
Depreciation and amortization expenses 11,600 11,261 12,139
Vision | Operating Segments      
Depreciation and Amortization Expenses      
Depreciation and amortization expenses 20,812 21,374 21,161
Precision Motion | Operating Segments      
Depreciation and Amortization Expenses      
Depreciation and amortization expenses $ 10,728 $ 5,443 $ 4,712