INCOME TAXES - Components of Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Current
Federal	$ 23,463	$ 28,723	$ 22,925
State and city	5,907	2,592	4,034
Foreign	10,989	12,532	6,150
Current Income Tax Expense (Benefit), Total	40,359	43,847	33,109
Deferred
Federal	4,419	4,084	(4,776)
State and city	191	1,285	(2,807)
Foreign	794	(1,291)	298
Deferred Income Tax Expense (Benefit), Total	5,404	4,078	(7,285)
Income tax expense	45,763	47,925	25,824
Income before income taxes
United States	137,748	93,691	55,363
Non-United States	46,082	16,358	22,399
Income before income taxes	$ 183,830	$ 110,049	$ 77,762