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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 31, 2022 | Jan. 31, 2021 | Jan. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES |  |  |
Net income (loss) | $ 35,706 | $ 23,811 | $ (40,712)
Adjustments to reconcile net income (loss) to net cash provided by operating activities |  |  |
Impairment loss | 7,901 |  | 4,895
Stock compensation expense | 3,459 | 2,938 | 2,131
Lease expense | 3,391 | 1,820 | 1,004
Provisions for credit losses | 2,381 | 16 | 20
Depreciation | 3,367 | 3,715 | 3,513
Amortization of purchased intangible assets | 870 | 904 | 1,136
Deferred income tax (benefit) expense | (208) | 7,645 | (6,640)
Other | 424 | 625 | 869
Changes in operating assets and liabilities |  |  |
Accounts receivable | (480) | 8,463 | (1,038)
Contract assets | 21,741 | 6,744 | 24,978
Other assets | (241) | (11,467) | 2,357
Accounts payable and accrued expenses | (5,742) | 31,442 | (3,284)
Contract liabilities | (44,154) | 99,357 | 64,336
Net cash provided by operating activities | 28,415 | 176,013 | 53,565
CASH FLOWS FROM INVESTING ACTIVITIES |  |  |
Maturities of short-term investments | 90,000 | 170,000 | 166,000
Purchases of short-term investments | (90,000) | (100,000) | (195,000)
Investment in solar energy projects | (5,016) | (1,333) |
Purchases of property, plant and equipment | (1,422) | (1,697) | (7,058)
Acquisition of Lee Telecom, Inc. | (600) |  |
Net cash (used in) provided by investing activities | (7,038) | 66,970 | (36,058)
CASH FLOWS FROM FINANCING ACTIVITIES |  |  |
Payments of cash dividends | (15,664) | (47,047) | (15,621)
Common stock repurchases | (20,372) |  |
Proceeds from the exercise of stock options | 1,428 | 1,641 | 1,630
Net cash used in financing activities | (34,608) | (45,406) | (13,991)
EFFECTS OF EXCHANGE RATE CHANGES ON CASH | (2,968) | 1,731 | (471)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS | (16,199) | 199,308 | 3,045
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD | 366,671 | 167,363 | 164,318
CASH AND CASH EQUIVALENTS, END OF PERIOD | $ 350,472 | $ 366,671 | $ 167,363

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