Income Taxes (Details) - Schedule of Unrecognized Tax Benefits Roll Forward - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
Schedule of Unrecognized Tax Benefits Roll Forward [Abstract]
Unrecognized tax benefits, beginning of period	$ 9,232	$ 2,325
Changes for prior years’ tax positions	66	809
Changes for current year tax positions	138
Unrecognized tax benefits, end of period	$ 9,436	$ 3,134