Stock-Based Compensation - Schedule of Stock Option Plan (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Jan. 31, 2022		Jan. 31, 2021	Jan. 31, 2020
Schedule of stock option plan
Outstanding Option Beginning Balance		1,111,110		561,110	566,260
Granted		201,875		550,000	0
Exercised		(330,151)	[1]	0	(5,150)
Cancelled		0		0	0
Outstanding Option Ending Balance		982,834		1,111,110	561,110
Exercisable		242,959		561,110	399,905
Expected to vest		691,920
Weighted Average Exercise Price per Option, Beginning Balance		$ 21.90		$ 28.41	$ 28.43
Granted, Weighted Average Exercise Price per Option		27.62		15.25	0
Exercised. Weighted Average Exercise Price per Option		26.01	[1]	0	30.36
Cancelled, Weighted Average Exercise Price per Option		0		0	0
Weighted Average Exercise Price per Option, Ending Balance		21.69		$ 21.90	$ 28.41
Exercisable, Weighted Average Exercise Price per Option		31.11
Expected to vest, Weighted Average Exercise Price per Option		18.49
Option Price Per Share, Granted		27.62
Option Price Per Share, Cancelled		$ 0
Options outstanding, Weighted Average Remaining Contractual Term (years)		7 years 6 months		6 years 10 months 24 days
Exercisable, Weighted Average Remaining Contractual Term (years)		3 years 6 months
Expected to vest, Weighted Average Remaining Contractual Term (years)		8 years 9 months 18 days
Options outstanding, Aggregate Intrinsic Value		$ 15,441		$ 2,975
Exercisable, Aggregate Intrinsic Value		1,776
Expected to vest, Aggregate Intrinsic Value		$ 12,857
Minimum
Schedule of stock option plan
Option Price Per Share, Beginning Balance		$ 12.42
Option Price Per Share, Exercised	[1]	16.87
Option Price Per Share, Ending Balance		12.42		$ 12.42
Maximum
Schedule of stock option plan
Option Price Per Share, Beginning Balance		42.12
Option Price Per Share, Exercised	[1]	30.36
Option Price Per Share, Ending Balance		$ 42.12		$ 42.12

[1] Includes 60,000 options exercised at an exercise price of $26.59 per option, 32,600 options exercised at an exercise price of $30.34 per option, 43,440 options exercised at an exercise price of $27.74 per option and 57,300 options exercised at an exercise price of $23.35 per option for which 115,037 shares of common stock of the Company were tendered to the Company by the holder of the stock options for the payment of the exercise price of these options.