CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Apr. 30, 2020	Jan. 31, 2020
CURRENT ASSETS
Cash and cash equivalents	$ 262,927	$ 167,363
Short-term investments	100,617	160,499
Accounts receivable, net	22,212	37,192
Contract assets	33,035	33,379
Other current assets	36,945	23,322
TOTAL CURRENT ASSETS	455,736	421,755
Property, plant and equipment, net	22,124	22,539
Goodwill	27,943	27,943
Other purchased intangible assets, net	4,776	5,001
Deferred taxes		7,894
Right-of-use and other assets	2,385	2,408
TOTAL ASSETS	512,964	487,540
LIABILITIES AND EQUITY CURRENT LIABILITIES
Accounts payable	34,322	35,442
Accrued expenses (Note 10)	28,959	35,907
Contract liabilities	109,825	72,685
TOTAL CURRENT LIABILITIES	173,106	144,034
Deferred taxes	320
Other noncurrent liabilities	2,638	2,476
TOTAL LIABILITIES	176,064	146,510
COMMITMENTS AND CONTINGENCIES (Notes 7 and 8)
STOCKHOLDERS' EQUITY
Preferred stock, par value $0.10 per share - 500,000 shares authorized; no shares issued and outstanding
Common stock, par value $0.15 per share - 30,000,000 shares authorized; 15,648,202 and 15,638,202 shares issued at April 30 and January 31, 2020, respectively; 15,644,969 and 15,634,969 shares outstanding at April 30 and January 31, 2020, respectively	2,347	2,346
Additional paid-in capital	149,531	148,713
Retained earnings	184,633	189,306
Accumulated other comprehensive loss	(1,362)	(1,116)
TOTAL STOCKHOLDERS' EQUITY	335,149	339,249
Non-controlling interests	1,751	1,781
TOTAL EQUITY	336,900	341,030
TOTAL LIABILITIES AND EQUITY	$ 512,964	$ 487,540