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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Apr. 30, 2021 | Apr. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES |  |
Net income (loss) | $ 10,766 | $ (793)
Adjustments to reconcile net income (loss) to net cash provided by operating activities |  |
Deferred income tax expense | 599 | 8,214
Depreciation | 882 | 937
Stock compensation expense | 679 | 642
Lease expense | 776 | 379
Amortization of purchased intangible assets | 228 | 225
Other | (114) | 328
Changes in operating assets and liabilities |  |
Accounts receivable | (3,666) | 14,980
Contract assets | 477 | 344
Other assets | 765 | (13,600)
Accounts payable and accrued expenses | (21,552) | (8,609)
Contract liabilities | 27,506 | 37,140
Net cash provided by operating activities | 17,346 | 40,187
CASH FLOWS FROM INVESTING ACTIVITIES |  |
Maturities of short-term investments | 20,000 | 70,000
Purchases of short-term investments |  | (10,000)
Investment in solar energy projects | (3,520) |
Purchases of property, plant and equipment | (844) | (684)
Net cash provided by investing activities | 15,636 | 59,316
CASH FLOWS FROM FINANCING ACTIVITIES |  |
Payments of cash dividends | (3,942) | (3,910)
Proceeds from the exercise of stock options | 1,023 | 177
Net cash used in financing activities | (2,919) | (3,733)
EFFECTS OF EXCHANGE RATE CHANGES ON CASH | (59) | (206)
NET INCREASE IN CASH AND CASH EQUIVALENTS | 30,004 | 95,564
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD | 366,671 | 167,363
CASH AND CASH EQUIVALENTS, END OF PERIOD | $ 396,675 | $ 262,927

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