Annual report pursuant to Section 13 and 15(d)

Segment Information (Details Textual)

v3.8.0.1
Segment Information (Details Textual)
12 Months Ended
Mar. 31, 2018
Sales Revenue, Net [Member]  
Segment Reporting Information [Line Items]  
Concentration Risk, Percentage 10.00%
Trade Accounts Receivable [Member]  
Segment Reporting Information [Line Items]  
Concentration Risk, Percentage 10.00%
UNITED STATES | Sales Revenue, Net [Member]  
Segment Reporting Information [Line Items]  
Concentration Risk, Percentage 90.00%
UNITED STATES | longlivedassets [Member]  
Segment Reporting Information [Line Items]  
Concentration Risk, Percentage 90.00%