Acquisition of Hema Diagnostics Systems, LLC - Carrying amount of goodwill and other intangible assets (Details)	6 Months Ended
	Jan. 31, 2017 USD ($)
Total
Acquisition of HDS	$ 16,291,754
Current year amortization
Impairment of goodwill	(14,335,822)
Ending balance	1,955,932
Goodwill
Acquisition of HDS	14,335,822
Current year amortization
Impairment of goodwill	(14,335,822)
Ending balance
Other Intangibles, net
Acquisition of HDS	1,955,932
Current year amortization
Impairment of goodwill
Ending balance	$ 1,955,932