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Variable Interest Entities (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Sep. 30, 2019
Jun. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Variable Interest Entity [Line Items]          
Gain on settlement of bankruptcy $ 18,000 $ 4,509,302 $ 0 $ 4,527,000 $ 0
Delphax          
Variable Interest Entity [Line Items]          
Percentage of consolidated subsidiaries dividends attributable to parent       67.00%  
Percentage of consolidated subsidiaries dividends attributable to noncontrolling interests       33.00%  
Net income (loss) attributable to noncontrolling interest, percentage       33.00% 33.00%
Delphax | Delphax Senior Credit Agreement          
Variable Interest Entity [Line Items]          
Short-term debt $ 0     $ 0