CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jan. 31, 2020	Jan. 31, 2019
CURRENT ASSETS
Cash and cash equivalents	$ 167,363	$ 164,318
Short-term investments	160,499	132,213
Accounts receivable, net	37,192	36,174
Contract assets	33,379	58,357
Other current assets	23,322	25,286
TOTAL CURRENT ASSETS	421,755	416,348
Property, plant and equipment, net	22,539	19,778
Goodwill	27,943	32,838
Other purchased intangible assets, net	5,001	6,137
Deferred taxes	7,894	1,257
Right-of-use and other assets (Note 10)	2,408	290
TOTAL ASSETS	487,540	476,648
LIABILITIES AND EQUITY CURRENT LIABILITIES
Accounts payable	35,442	39,870
Accrued expenses	35,907	33,097
Contract liabilities	72,685	8,349
TOTAL CURRENT LIABILITIES	144,034	81,316
Lease liabilities (Note 10)	636
Other noncurrent liabilities (Note 10)	2,476	960
TOTAL LIABILITIES	146,510	82,276
COMMITMENTS AND CONTINGENCIES (Notes 10 and 11)
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; 15,638,202 and 15,577,102 shares issued at January 31, 2020 and 2019, respectively; 15,634,969 and 15,573,869 shares outstanding at January 31, 2020 and 2019, respectively	2,346	2,337
Additional paid-in capital	148,713	144,961
Retained earnings	189,306	247,616
Accumulated other comprehensive loss	(1,116)	(346)
TOTAL STOCKHOLDERS' EQUITY	339,249	394,568
Non-controlling interests	1,781	(196)
TOTAL EQUITY	341,030	394,372
TOTAL LIABILITIES AND EQUITY	$ 487,540	$ 476,648