CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Apr. 30, 2019	Jan. 31, 2019
CURRENT ASSETS
Cash and cash equivalents	$ 132,388	$ 164,318
Short-term investments	123,376	132,213
Accounts receivable, net	48,203	36,174
Contract assets	48,536	58,357
Other current assets	20,658	25,286
TOTAL CURRENT ASSETS	373,161	416,348
Property, plant and equipment, net	20,850	19,778
Goodwill	30,766	32,838
Other purchased intangible assets, net	5,838	6,137
Rights-of-use assets (Note 7)	1,186
Deferred taxes	998	1,257
Other assets	362	290
TOTAL ASSETS	433,161	476,648
CURRENT LIABILITIES
Accounts payable	34,426	44,427
Accrued expenses (Notes 2, 7 and 11)	29,700	29,500
Contract liabilities	6,900	8,349
TOTAL CURRENT LIABILITIES	71,026	82,276
Lease liabilities (Note 7)	645
TOTAL LIABILITIES	71,671	82,276
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; 15,636,535 and 15,577,102 shares issued at April 30 and January 31, 2019, respectively; 15,633,302 and 15,573,869 shares outstanding at April 30 and January 31, 2019, respectively	2,346	2,337
Additional paid-in capital	146,932	144,961
Retained earnings	213,921	247,616
Accumulated other comprehensive loss	(1,400)	(346)
TOTAL STOCKHOLDERS' EQUITY	361,799	394,568
Non-controlling interests	(309)	(196)
TOTAL EQUITY	361,490	394,372
TOTAL LIABILITIES AND EQUITY	$ 433,161	$ 476,648