| Mar'20 | Dec'19 | Sep'19 | Jun'19 | Mar'19 | Dec'18 | Sep'18 | Jun'18 | Mar'18 | Dec'17 | Sep'17 | Jun'17 | Mar'17 | Dec'16 | Sep'16 | Jun'16 | Mar'16 | Dec'15 | Sep'15 | Jun'15 | Mar'15 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cash flows from operating activities: | ||||||||||||||||||||
Net loss | ||||||||||||||||||||
-22,924 | -14,346 | -14,406 | -13,420 | -11,673 | -13,020 | -11,831 | -14,333 | -16,361 | -13,004 | -10,284 | -11,637 | -10,545 | -9,774 | -10,194 | -13,452 | -15,580 | -21,106 | -11,825 | -9,244 | -7,682 |
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||||||||||||||||
Depreciation and amortization | ||||||||||||||||||||
4,843 | 4,559 | 4,598 | 3,944 | 3,427 | 3,360 | 2,660 | 2,678 | 2,399 | 2,324 | 2,067 | 1,613 | 1,624 | 1,395 | 1,911 | 1,708 | 1,711 | 1,652 | 1,339 | 1,227 | 1,134 |
Amortization of debt discount and issuance costs | ||||||||||||||||||||
2,743 | 2,730 | 2,679 | 2,594 | 2,510 | 2,535 | 1,296 | 0 | 0 | - | - | - | - | - | - | - | - | 0 | 853 | 138 | 138 |
Stock-based compensation expense | ||||||||||||||||||||
13,347 | 11,174 | 10,426 | 10,430 | 8,634 | 6,594 | 7,424 | 7,350 | 6,225 | 4,803 | 5,288 | 5,171 | 4,279 | 3,979 | 4,177 | 3,641 | 5,519 | 7,852 | 1,427 | 831 | 575 |
Provision for doubtful accounts | ||||||||||||||||||||
527 | 459 | 429 | 916 | 437 | 260 | 24 | 300 | 156 | 396 | 31 | 162 | 316 | 427 | 110 | 270 | 124 | 252 | 200 | 211 | 165 |
Foreign currency re-measurement loss | ||||||||||||||||||||
-447 | 315 | -379 | 58 | -249 | -191 | -95 | -324 | -147 | -46 | 172 | 282 | -44 | -224 | 47 | -104 | 223 | -63 | -37 | 188 | -241 |
Other non-cash (income) expense | ||||||||||||||||||||
138 | 254 | 345 | 568 | 722 | 161 | 274 | 19 | 52 | 5 | -39 | -78 | -97 | -390 | 38 | 52 | 78 | - | - | - | - |
Changes in operating assets and liabilities: | ||||||||||||||||||||
Accounts receivable | ||||||||||||||||||||
-22,608 | 25,660 | -6,311 | 10,180 | -14,729 | 20,972 | 5,299 | 10,136 | -34,722 | 25,347 | 1,110 | 13,942 | -15,182 | 11,329 | -189 | 9,103 | -14,048 | 11,721 | 5,809 | 5,019 | -4,179 |
Deferred contract acquisition and fulfillment costs | ||||||||||||||||||||
516 | 5,903 | 2,231 | 2,078 | 1,094 | 6,405 | 1,854 | 2,818 | 1,713 | 0 | 0 | 0 | 0 | - | - | - | - | - | - | - | - |
Prepaid expenses and other assets | ||||||||||||||||||||
-135 | 3,813 | 544 | 3,394 | 5,940 | -2,147 | -1,168 | 412 | 3,190 | 675 | -189 | 1,054 | -1,466 | 2,447 | -325 | 685 | 716 | 1,266 | -546 | 289 | 778 |
Accounts payable | ||||||||||||||||||||
4,010 | -1,040 | -1,052 | 2,118 | 66 | 3,110 | -1,826 | -828 | 3,219 | -1,935 | 1,335 | -1,413 | -244 | 1,070 | -1,355 | 2,404 | -500 | -701 | -233 | -680 | -688 |
Accrued expenses | ||||||||||||||||||||
-14,563 | 9,581 | 2,490 | 6,378 | -13,690 | 8,192 | 5,632 | 3,511 | -11,317 | 5,955 | 2,925 | 5,094 | -7,216 | 3,185 | 1,855 | 3,965 | -7,427 | 5,111 | 2,673 | 2,846 | -3,928 |
Deferred revenue | ||||||||||||||||||||
-16,671 | 30,810 | -7,058 | 7,038 | -12,104 | 25,183 | -1,312 | 5,494 | -6,495 | 35,857 | 8,214 | 12,782 | -1,416 | 19,800 | 4,543 | 12,865 | 1,540 | 19,800 | 12,643 | 8,837 | 3,588 |
Other liabilities | ||||||||||||||||||||
-1,063 | -274 | 163 | -476 | 1,605 | 989 | 47 | -225 | -444 | 15 | -146 | -553 | -266 | 392 | 238 | 94 | -166 | -61 | -140 | 38 | 44 |
Net cash used in operating activities | ||||||||||||||||||||
-7,215 | 7,824 | 1,839 | 2,483 | -13,566 | 11,934 | -4,050 | -9,114 | 7,296 | 8,202 | 5,744 | -3,981 | 3,321 | 7,051 | 1,790 | 1,863 | -1,592 | 73 | 2,273 | -1,241 | -3,012 |
Cash flows from investing activities: | ||||||||||||||||||||
Purchases of property and equipment | ||||||||||||||||||||
2,756 | 2,375 | 9,341 | 9,249 | 8,463 | 4,409 | 2,754 | 3,503 | 2,147 | 1,318 | 928 | 1,243 | 1,335 | 1,192 | 1,465 | 750 | 1,092 | 1,297 | 1,644 | 622 | 573 |
Capitalization of internal-use software costs | ||||||||||||||||||||
1,474 | 1,401 | 1,534 | 1,551 | 1,601 | 760 | 1,092 | 720 | 693 | 406 | 440 | 316 | 0 | - | - | - | - | - | - | - | - |
Purchases of investments | ||||||||||||||||||||
24,272 | 33,839 | 41,776 | 9,403 | 63,029 | 54,476 | 168,290 | 6,195 | 4,460 | 13,506 | 5,856 | 8,427 | 7,401 | 38,976 | 0 | 0 | 0 | - | - | - | - |
Sales/maturities of investments | ||||||||||||||||||||
113,924 | 37,693 | 36,985 | 67,564 | 72,738 | 30,650 | 6,448 | 19,066 | 14,062 | 9,150 | 9,917 | 13,705 | 900 | 0 | 0 | 0 | 0 | - | - | - | - |
Net cash provided by (used in) investing activities | ||||||||||||||||||||
85,422 | 78 | -15,652 | 32,740 | -355 | -43,455 | -165,688 | 8,648 | 6,762 | -6,080 | -12,024 | 3,719 | -7,836 | -40,168 | -1,465 | -750 | -1,092 | -36,764 | -1,644 | -3,966 | -573 |
Cash flows from financing activities: | ||||||||||||||||||||
Proceeds from follow-on public offering, net of offering costs of $608 | ||||||||||||||||||||
- | - | - | - | - | 0 | 0 | -324 | 31,231 | 0 | 0 | 0 | 0 | - | - | - | - | - | - | - | - |
Payments of capital lease obligations | ||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 0 | 0 | 68 | 66 | 64 | 64 | 59 |
Taxes paid related to net share settlement of equity awards | ||||||||||||||||||||
1,533 | 2,026 | 2,087 | 1,860 | 979 | 485 | 707 | 543 | 462 | 230 | 207 | 92 | 169 | 288 | 66 | 673 | 3,087 | - | - | - | - |
Proceeds from employee stock purchase plan | ||||||||||||||||||||
3,346 | 0 | 2,887 | 0 | 2,634 | 0 | 2,005 | 0 | 1,632 | 0 | 1,415 | 0 | 1,499 | 0 | 1,628 | 0 | 2,096 | - | - | - | - |
Proceeds from stock option exercises | ||||||||||||||||||||
1,561 | 2,295 | 1,866 | 3,340 | 2,718 | 1,085 | 1,864 | 2,696 | 1,961 | 853 | 884 | 3,336 | 775 | 406 | 1,087 | 884 | 547 | 29 | 570 | 297 | 408 |
Net cash provided by financing activities | ||||||||||||||||||||
3,374 | 269 | 2,666 | 1,480 | 4,373 | 192 | 199,781 | 1,829 | 34,362 | 623 | 2,092 | 2,448 | 2,105 | -1,187 | 2,649 | 211 | -512 | -678 | 96,408 | -1,293 | 349 |
Effect of exchange rate changes on cash, cash equivalents and restricted cash | ||||||||||||||||||||
-560 | 317 | -497 | -3 | -148 | -266 | -114 | -278 | -36 | -38 | 175 | 220 | -76 | -263 | -14 | -77 | 151 | -62 | -53 | 157 | -244 |
Net increase (decrease) in cash, cash equivalents and restricted cash | ||||||||||||||||||||
81,021 | 8,488 | -11,644 | 36,700 | -9,696 | -31,595 | 29,929 | 1,085 | 48,384 | 2,707 | -4,013 | 2,406 | -2,486 | -34,567 | 2,960 | 1,247 | -3,045 | -37,431 | 96,984 | -6,343 | -3,480 |
Supplemental cash flow information: | ||||||||||||||||||||
Cash paid for interest on convertible senior notes | ||||||||||||||||||||
1,438 | 0 | 1,437 | 0 | 1,342 | 0 | 0 | 0 | 0 | - | - | - | - | 4 | 0 | 0 | 1 | 3 | 317 | 558 | 549 |
Cash paid for income taxes, net of refunds | ||||||||||||||||||||
33 | -4 | 85 | 231 | 88 | -35 | -92 | 262 | 53 | 42 | 136 | 558 | 65 | 76 | 146 | 60 | 274 | 50 | 200 | 33 | 58 |
Non-cash investing activities: | ||||||||||||||||||||
Leasehold improvements acquired through tenant improvement allowance | ||||||||||||||||||||
0 | 0 | 0 | 6,703 | 7,313 | 0 | 0 | 0 | 0 | - | - | - | - | - | - | - | - | - | - | - | - |
Reconciliation of cash, cash equivalents and restricted cash: | ||||||||||||||||||||