Summary of Significant Accounting Policies - Schedule of Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Property, plant and equipment
Property, plant and equipment, Gross	$ 156,761	$ 136,416
Less – Accumulated depreciation and amortization	(104,635)	(100,652)
Net property, plant and equipment	52,126	35,764
Land
Property, plant and equipment
Property, plant and equipment, Gross	7,100	5,838
Buildings, leasehold interests and improvements
Property, plant and equipment
Property, plant and equipment, Gross	45,164	40,661
Machinery, equipment and other
Property, plant and equipment
Property, plant and equipment, Gross	$ 104,497	$ 89,917