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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Apr. 30, 2020 | Apr. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES: |  |  |
Net loss |  | $ (25,550) | $ (36,828)
Adjustments to reconcile net loss to net cash provided by operating activities: |  |  |
Depreciation and amortization |  | 17,946 | 12,625
Stock-based compensation expense |  | 40,043 | 32,362
Amortization of deferred commissions |  | 8,159 | 5,639
Others |  | 74 | (147)
Changes in operating assets and liabilities: |  |  |
Accounts receivable, net |  | 110,367 | 81,475
Deferred commissions |  | (7,695) | (6,076)
Operating lease right-of-use assets, net |  | 9,713 | 8,560
Prepaid expenses and other assets |  | (4,925) | (4,382)
Accounts payable |  | (6,992) | (3,187)
Accrued expenses and other liabilities |  | (12,721) | (11,827)
Operating lease liabilities |  | (11,002) | (8,127)
Deferred revenue |  | (55,500) | (44,596)
Net cash provided by operating activities |  | 61,917 | 25,491
CASH FLOWS FROM INVESTING ACTIVITIES: |  |  |
Purchases of property and equipment |  | (1,443) | (1,614)
Capitalized internal-use software costs |  | (3,291) | (1,286)
Proceeds from sales of property and equipment |  | 36 | 3
Proceeds from the sale of a strategic equity investment |  | 107 |
Net cash used in investing activities |  | (4,591) | (2,897)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |  |
Proceeds from borrowings |  | 30,000 |
Proceeds from exercise of stock options |  | 965 | 1,199
Proceeds from issuances of common stock under employee stock purchase plan |  | 11,906 | 13,605
Employee payroll taxes paid related to net share settlement of restricted stock units |  | (10,212) | (14,591)
Principal payments of finance lease liabilities |  | (17,356) | (9,154)
Net cash provided by (used in) financing activities |  | 15,303 | (8,941)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash |  | 200 | 27
Net increase in cash, cash equivalents, and restricted cash |  | 72,829 | 13,680
Cash, cash equivalents, and restricted cash, beginning of period |  | 195,586 | 217,756
Cash, cash equivalents, and restricted cash, end of period |  | 268,415 | 231,436
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION: |  |  |
Cash paid for interest, net of amounts capitalized |  | 2,245 | 1,152
Cash paid for income taxes, net of tax refunds |  | 538 | 1,444
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES: |  |  |
Accrued equipment purchases |  | 6,430 | 3,773
Increase in long-lived assets resulting from capitalizing asset retirement costs |  | 197 | 2,706
Stock-based compensation expense capitalized in internally developed software costs |  | 970 | 1,000
Accrued on-premises software |  | 770 |
Increase in finance lease liabilities | [1] | 14,825 | 21,414
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH INFORMATION: |  |  |
Cash and cash equivalents, beginning of period |  | 195,586 | 217,518
Restricted cash, beginning of period |  |  | 238
Cash, cash equivalents, and restricted cash, beginning of period |  | 195,586 | 217,756
Cash and cash equivalents, end of period |  | 267,973 | 231,436
Restricted cash, end of period |  | 442 |
Cash, cash equivalents, and restricted cash, end of period |  | $ 268,415 | $ 231,436
[1] | Amounts disclosed for the three months ended April 30, 2019 include the adoption impact of ASC Topic 842 on the opening balance sheet as of February 1, 2019.

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- Definition The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
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