Annual report pursuant to Section 13 and 15(d)

Property, Plant and Equipment (Details)

v3.8.0.1
Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 102,060 $ 63,501  
Accumulated Depreciation (27,575) (20,235)  
Property, plant and equipment, net 74,485 43,266  
Depreciation expense 7,962 6,060 $ 4,655
Land, buildings and improvements [Member]      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 50,808 23,812  
Machinery and equipment [Member]      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 24,182 20,727  
Office furniture and equipment [Member]      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 20,818 13,296  
Internally developed software [Member]      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 4,069 3,188  
Depreciation expense 495 496 $ 453
Construction in Progress [Member]      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 2,183 $ 2,478