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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 31, 2023 | Jul. 31, 2022 | Jul. 31, 2023 | Jul. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES |  |  |  |
Net income | $ 12,767 | $ 4,222 | $ 14,876 | $ 11,707
Adjustments to reconcile net income to net cash used in operating activities |  |  |  |
Stock compensation expense | 1,200 | 1,100 | 2,218 | 1,979
Depreciation | 488 | 747 | 1,035 | 1,556
Lease expense | 400 | 500 | 884 | 1,319
Changes in accrued interest on investments |  |  | (341) | (617)
Deferred income tax (benefit) expense |  |  | (196) | 373
Amortization of intangible assets | 98 | 233 | 196 | 399
Equity in loss (income) of solar energy investments |  |  | 98 | (1,070)
Other |  |  | 64 | 8
Changes in operating assets and liabilities |  |  |  |
Accounts receivable |  |  | 5,600 | 2,090
Contract assets |  |  | 4,031 | (3,774)
Other assets |  |  | (5,176) | 9,252
Accounts payable and accrued expenses |  |  | (8,931) | (16,124)
Contract liabilities |  |  | 20,195 | (63,874)
Net cash provided by (used in) operating activities |  |  | 34,553 | (56,776)
CASH FLOWS FROM INVESTING ACTIVITIES |  |  |  |
Purchases of short-term investments |  |  | (90,000) | (175,000)
Maturities of short-term investments |  |  | 159,750 | 90,000
Purchases of available-for-sale securities |  |  | (60,261) |
Purchases of property, plant and equipment |  |  | (1,031) | (638)
Net cash provided by (used in) investing activities |  |  | 8,458 | (85,638)
CASH FLOWS FROM FINANCING ACTIVITIES |  |  |  |
Common stock repurchases |  |  | (6,738) | (53,168)
Payments of cash dividends |  |  | (6,699) | (7,192)
Proceeds from the exercise of stock options |  |  | 947 | 66
Net cash used in financing activities |  |  | (12,490) | (60,294)
EFFECTS OF EXCHANGE RATE CHANGES ON CASH |  |  | 331 | (4,420)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS |  |  | 30,852 | (207,128)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD |  |  | 173,947 | 350,472
CASH AND CASH EQUIVALENTS, END OF PERIOD | $ 204,799 | $ 143,344 | $ 204,799 | $ 143,344

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