CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 31, 2020	Jan. 31, 2020
CURRENT ASSETS
Cash and cash equivalents	$ 382,424	$ 167,363
Short-term investments	25,204	160,499
Accounts receivable, net	29,660	37,192
Contract assets	26,523	33,379
Other current assets (Note 10)	39,645	23,322
TOTAL CURRENT ASSETS	503,456	421,755
Property, plant and equipment, net	21,692	22,539
Goodwill	27,943	27,943
Other purchased intangible assets, net	4,550	5,001
Deferred taxes		7,894
Right-of-use and other assets	3,466	2,408
TOTAL ASSETS	561,107	487,540
LIABILITIES AND EQUITY CURRENT LIABILITIES
Accounts payable	41,242	35,442
Accrued expenses (Note 10)	36,185	35,907
Contract liabilities	156,008	72,685
TOTAL CURRENT LIABILITIES	233,435	144,034
Deferred taxes	642
Other noncurrent liabilities	2,883	2,476
TOTAL LIABILITIES	236,960	146,510
COMMITMENTS AND CONTINGENCIES (Notes 7 and 8)
STOCKHOLDERS' EQUITY
Common stock, par value $0.15 per share - 30,000,000 shares authorized; 15,673,202 and 15,638,202 shares issued at July 31 and January 31, 2020, respectively; 15,669,969 and 15,634,969 shares outstanding at July 31 and January 31, 2020, respectively	2,351	2,346
Additional paid-in capital	150,847	148,713
Retained earnings	170,653	189,306
Accumulated other comprehensive loss	(1,445)	(1,116)
TOTAL STOCKHOLDERS' EQUITY	322,406	339,249
Non-controlling interests	1,741	1,781
TOTAL EQUITY	324,147	341,030
TOTAL LIABILITIES AND EQUITY	$ 561,107	$ 487,540