Annual report pursuant to Section 13 and 15(d)

Revenue Recognition - Revenues (Details)

v3.19.2
Revenue Recognition - Revenues (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Disaggregation of Revenue [Line Items]    
Total revenue $ 83,412 $ 82,837
Product, accessories and parts    
Disaggregation of Revenue [Line Items]    
Total revenue 66,303 66,754
Total from Micro turbine Products    
Disaggregation of Revenue [Line Items]    
Total revenue 51,417 50,813
Accessories and parts    
Disaggregation of Revenue [Line Items]    
Total revenue 14,886 15,941
Service    
Disaggregation of Revenue [Line Items]    
Total revenue 17,109 16,083
Total North America    
Disaggregation of Revenue [Line Items]    
Total revenue 51,276 41,265
United States    
Disaggregation of Revenue [Line Items]    
Total revenue 45,480 39,100
Mexico    
Disaggregation of Revenue [Line Items]    
Total revenue 5,005 2,007
All other North America    
Disaggregation of Revenue [Line Items]    
Total revenue 791 158
All other Europe    
Disaggregation of Revenue [Line Items]    
Total revenue 12,886 12,762
Total Europe    
Disaggregation of Revenue [Line Items]    
Total revenue 16,062 15,586
Asia    
Disaggregation of Revenue [Line Items]    
Total revenue 5,229 8,378
Australia    
Disaggregation of Revenue [Line Items]    
Total revenue 3,874 5,443
All other    
Disaggregation of Revenue [Line Items]    
Total revenue $ 6,971 $ 12,165