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Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Disclosure of detailed information about property, plant and equipment [line items]    
Property plant and equipment, Beginning Balance $ 81,754 $ 96,135
Additions/transfers 6,128 1,785
Additions-Capital Lease   191
Placed in service (3,035) (93)
Disposals (630) (13,045)
Accum deprec on disposal 565 4,122
Depreciation expense (7,027) (7,586)
Foreign currency translation adjustment (276) 245
Property plant and equipment, Ending Balance 77,479 81,754
Property plant and equipment, at cost 156,418 153,666
Property plant and equipment, accumulation depreciation (78,939) (71,912)
Land [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property plant and equipment, Beginning Balance 9,112 11,864
Disposals (65) (2,752)
Property plant and equipment, Ending Balance 9,047 9,112
Property plant and equipment, at cost 9,047 9,112
Leasehold and land improvements [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property plant and equipment, Beginning Balance 1,597 1,692
Depreciation expense (85) (95)
Property plant and equipment, Ending Balance 1,512 1,597
Property plant and equipment, at cost 3,820 3,820
Property plant and equipment, accumulation depreciation (2,308) (2,223)
Buildings [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property plant and equipment, Beginning Balance 43,344 50,517
Additions/transfers   (416)
Disposals   (5,524)
Accum deprec on disposal   1,601
Depreciation expense (2,604) (2,858)
Foreign currency translation adjustment (26) 24
Property plant and equipment, Ending Balance 40,714 43,344
Property plant and equipment, at cost 77,003 77,029
Property plant and equipment, accumulation depreciation (36,289) (33,685)
Machinery and equipment [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property plant and equipment, Beginning Balance 27,233 31,767
Additions/transfers 3,012 789
Additions-Capital Lease   191
Placed in service   1,071
Disposals (565) (4,694)
Accum deprec on disposal 565 2,521
Depreciation expense (4,338) (4,633)
Foreign currency translation adjustment (253) 221
Property plant and equipment, Ending Balance 25,654 27,233
Property plant and equipment, at cost 65,996 63,237
Property plant and equipment, accumulation depreciation (40,342) (36,004)
Construction in process [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Property plant and equipment, Beginning Balance 468 295
Additions/transfers 3,116 1,412
Placed in service (3,035) (1,164)
Disposals   (75)
Foreign currency translation adjustment 3  
Property plant and equipment, Ending Balance 552 468
Property plant and equipment, at cost $ 552 $ 468