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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 31, 2016 | Jan. 31, 2015 | Jan. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES: |  |  |
Net loss | $ (202,948) | $ (168,227) | $ (168,557)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Depreciation and amortization | 40,394 | 29,019 | 17,867
Stock-based compensation expense | 59,504 | 31,929 | 11,749
Amortization of deferred commissions | 15,816 | 12,079 | 13,500
Remeasurement of redeemable convertible preferred stock warrant liability |  | (126) | 8,477
Release of deferred tax valuation allowance | 0 | (1,117) | (2,590)
Other | 1,089 | 278 | 212
Changes in operating assets and liabilities, net of effects of acquisitions: |  |  |
Accounts receivable, net | (45,368) | (11,487) | (25,157)
Deferred commissions | (21,725) | (16,187) | (13,999)
Prepaid expenses and other assets, current and noncurrent | (25,717) | (2,521) | (3,792)
Accounts payable | (4,022) | 3,231 | (3,177)
Accrued expenses and other liabilities | 17,943 | 6,952 | 24,055
Deferred rent | 32,357 | 1,292 | (330)
Deferred revenue | 66,356 | 29,985 | 49,973
Net cash used in operating activities | (66,321) | (84,900) | (91,769)
CASH FLOWS FROM INVESTING ACTIVITIES: |  |  |
Purchases of marketable securities | (112,521) |  |
Sales of marketable securities | 78,427 |  |
Maturities of marketable securities | 26,370 |  |
Purchases of property and equipment | (72,939) | (38,681) | (24,424)
Proceeds from sale of property and equipment | 73 |  |
Acquisitions and purchases of intangible assets, net of cash acquired | (271) | (202) | (7,761)
Net cash used in investing activities | (80,861) | (38,883) | (32,185)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |  |
Proceeds from initial public offering, net of offering costs | (2,172) | 184,237 | (588)
Proceeds from borrowings, net of borrowing costs | 39,860 | 12,000 | 32,744
Principal payments on borrowings | (40,000) | (6,000) | (30,971)
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs |  | 149,614 | 99,944
Proceeds from exercise of redeemable convertible preferred stock warrants |  |  | 1,033
Proceeds from exercise of stock options, net of repurchases of early exercised stock options | 7,015 | 6,016 | 3,003
Proceeds from issuances of common stock under employee stock purchase plan | 10,282 |  |
Employee payroll taxes paid related to net share settlement of restricted stock units | (10,436) | (359) |
Payments of capital lease obligations | (2,036) | (69) |
Net cash provided by financing activities | 2,513 | 345,439 | 105,165
Effect of exchange rate changes on cash and cash equivalents | (26) | (71) | 15
Net increase (decrease) in cash and cash equivalents | (144,695) | 221,585 | (18,774)
Cash and cash equivalents, beginning of period | 330,436 | 108,851 | 127,625
Cash and cash equivalents, end of period | 185,741 | 330,436 | 108,851
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION: |  |  |
Cash paid for interest, net of amounts capitalized | 1,183 | 1,099 | 3,461
Cash paid for income taxes, net of tax refunds | 832 | 157 | 86
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES: |  |  |
Conversion of redeemable convertible preferred stock to common stock |  | 557,816 |
Accretion of redeemable convertible preferred shares | 0 | 11,503 | 341
Deemed dividend on the conversion of Series F redeemable convertible preferred stock |  | 2,262 |
Change in accrued equipment purchases | 10,766 | 2,110 | 2,768
Purchases of property and equipment under capital lease | 13,138 | 1,952 |
Issuance of redeemable convertible preferred stock exercise of warrants |  | 1,220 | 10,000
Issuance of common stock in connection with acquisitions and purchases of intangible assets | 6,108 | 5,239 | 5,066
Vesting of early exercised stock options and restricted stock | 127 | 684 | 1,135
Change in unpaid deferred offering costs | $ (2,172) | $ 417 | $ 1,755

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- Definition Other income (expense) included in net income that results in no cash inflows or outflows in the period. Includes noncash adjustments to reconcile net income (loss) to cash provided by (used in) operating activities that are not separately disclosed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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- Definition Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585 + Details
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- Definition The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26853-111562 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585 + Details
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- Definition The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination. + References No definition available. + Details
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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585 + Details
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- Definition The cash inflow associated with maturities (principal being due), prepayments and calls (requests of early payments) on securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26853-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
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- Definition The net cash inflow or outflow in aggregate debt due to repayments and proceeds from additional borrowings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26853-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585 + Details
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