Quarterly report pursuant to Section 13 or 15(d)

Variable Interest Entity and Guarantee (Details Textual)

v3.10.0.1
Variable Interest Entity and Guarantee (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Mar. 31, 2018
Apr. 02, 2013
Concentration Risk [Line Items]            
Revenue $ 10,106 $ 17,232 $ 23,143 $ 33,806    
AKA [Member]            
Concentration Risk [Line Items]            
Equity Method Investments 57   57   $ 56  
Revenue 500 $ 900 1,100 $ 1,700    
Accounts Receivable, Net, Current 300   300   400  
Deferred Revenue 900   900   $ 1,400  
Guarantor Obligations, Maximum Exposure, Undiscounted $ 700   $ 700      
AKA [Member]            
Concentration Risk [Line Items]            
Equity Method Investment, Ownership Percentage           50.00%