Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Revenue by Product (Details)

v3.19.2
Summary of Significant Accounting Policies - Revenue by Product (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Revenue by product    
Total Revenue $ 83,412 $ 82,837
Product, accessories and parts    
Revenue by product    
Total Revenue 66,303 66,754
Total from Micro turbine Products    
Revenue by product    
Total Revenue 51,417 50,813
C30    
Revenue by product    
Total Revenue 1,810 1,694
C65    
Revenue by product    
Total Revenue 11,719 12,740
C200    
Revenue by product    
Total Revenue 5,218 2,832
C600    
Revenue by product    
Total Revenue 6,286 9,057
C800    
Revenue by product    
Total Revenue 5,846 6,461
C1000    
Revenue by product    
Total Revenue 20,538 17,886
Unit upgrades    
Revenue by product    
Total Revenue   143
Accessories and parts    
Revenue by product    
Total Revenue 14,886 15,941
Service    
Revenue by product    
Total Revenue $ 17,109 $ 16,083