CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 31, 2019	Jan. 31, 2019
CURRENT ASSETS
Cash and cash equivalents	$ 170,710	$ 164,318
Short-term investments	62,914	132,213
Accounts receivable, net	45,989	36,174
Contract assets	51,742	58,357
Other current assets	21,782	25,286
TOTAL CURRENT ASSETS	353,137	416,348
Property, plant and equipment, net	20,903	19,778
Goodwill	30,766	32,838
Other purchased intangible assets, net	5,545	6,137
Rights-of-use assets (Note 7)	1,043
Deferred taxes	7,979	1,257
Other assets	351	290
TOTAL ASSETS	419,724	476,648
LIABILITIES AND EQUITY CURRENT LIABILITIES
Accounts payable	26,028	39,870
Accrued expenses (Notes 2, 7 and 11)	30,928	33,097
Contract liabilities	1,758	8,349
TOTAL CURRENT LIABILITIES	58,714	81,316
Lease liabilities (Note 7)	616
Other noncurrent liabilities	1,325	960
TOTAL LIABILITIES	60,655	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 July 31, and January 31, 2019, respectively; 15,633,302 and 15,573,869 shares outstanding at July 31, and January 31, 2019, respectively	2,346	2,337
Additional paid-in capital	147,445	144,961
Retained earnings	211,167	247,616
Accumulated other comprehensive loss	(1,406)	(346)
TOTAL STOCKHOLDERS' EQUITY	359,552	394,568
Non-controlling interests	(483)	(196)
TOTAL EQUITY	359,069	394,372
TOTAL LIABILITIES AND EQUITY	$ 419,724	$ 476,648