Summary of Significant Accounting Policies - Schedule of Disaggregates Gross Revenue By Significant Geographic Area (Details) (USD $) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Disaggregation of revenue from contracts with customers	$ 8,099,445	$ 5,640,830	$ 15,464,269	$ 13,382,824
Northeast [Member]
Disaggregation of revenue from contracts with customers			5,219,863	4,115,947
Southeast [Member]
Disaggregation of revenue from contracts with customers			3,681,339	3,052,174
Midwest [Member]
Disaggregation of revenue from contracts with customers			2,134,045	2,182,830
West [Member]
Disaggregation of revenue from contracts with customers			2,713,142	2,547,803
Southwest [Member]
Disaggregation of revenue from contracts with customers			$ 1,909,692	$ 1,686,795