Annual report pursuant to Section 13 and 15(d)

Organization and Significant Accounting Policies Organization and Significant Accounting Polices - Contract Liabilities (Details)

v3.19.1
Organization and Significant Accounting Policies Organization and Significant Accounting Polices - Contract Liabilities (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Accounting Policies [Abstract]      
Contract with Customer, Liability, Revenue Recognized $ 900 $ 300 $ 200
Contract with Customer, Liability, Current 256 256  
Contract with Customer, Liability, Noncurrent 0 513  
Contract with Customer, Liability $ 256 $ 769