Income Taxes (Details) - Schedule of Effective Income Tax Reconciliation	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Schedule of Effective Income Tax Reconciliation [Abstract]
Federal income tax at statutory rate	21.00%	33.80%	35.00%
State and local taxes, net of federal tax benefit	3.60%	3.20%	2.30%
Section 45 production tax credits	(145.20%)	(45.40%)
Research and experimentation credits	(77.80%)
Tax Cuts and Jobs Act	1.90%	(56.60%)
Domestic production activities deduction		(5.90%)	(2.90%)
Uncertain tax positions	47.10%	1.40%	0.80%
Noncontrolling interest	(9.90%)	(7.60%)	(4.60%)
Other	2.20%	0.20%
Total	(157.10%)	(76.90%)	30.60%