Annual report pursuant to Section 13 and 15(d)

Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail)

v3.21.1
Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - USD ($)
$ in Thousands
Mar. 31, 2021
Mar. 31, 2020
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 53,087 $ 51,398
Less - accumulated depreciation and amortization 35,469 33,811
Property, plant and equipment, net 17,618 17,587
Land [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 365 171
Buildings and Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 21,095 19,393
Machinery and Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 31,619 30,474
Construction in Progress [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 8 $ 1,360