| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cash flows from operating activities: | ||||||||||||
Net loss | ||||||||||||
-6,094 | 2,297 | -11,923 | -10,516 | -11,691 | -8,606 | -10,168 | -9,023 | -6,735 | - | - | - | - |
Net loss | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | -5,863 | -5,939 |
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||||||||
Depreciation and amortization expense | ||||||||||||
295 | 314 | 318 | 331 | 330 | 352 | 330 | 325 | 314 | 307 | 300 | 286 | 278 |
Stock-based compensation expense | ||||||||||||
769 | 842 | 788 | 885 | 726 | 902 | 860 | 847 | 479 | 460 | 299 | 282 | 300 |
Realized loss on sales of marketable securities | ||||||||||||
- | - | 0 | -1 | -1 | - | - | - | - | - | - | - | - |
Noncash consideration received from a customer | ||||||||||||
808 | - | - | - | - | - | - | - | - | - | - | - | - |
Premiums paid on marketable securities | ||||||||||||
- | - | - | - | - | - | - | - | - | 0 | 0 | -1 | 14 |
Net amortization (accretion) of premiums (discounts) on marketable securities | ||||||||||||
- | -2 | 0 | 6 | 49 | 87 | 120 | 43 | -4 | -7 | -5 | -3 | -2 |
Non-cash interest expense | ||||||||||||
- | - | - | - | - | 7 | 5 | 6 | 5 | 6 | 5 | 5 | 4 |
Changes in operating assets and liabilities: | ||||||||||||
Accounts receivable | ||||||||||||
-2,000 | 1,120 | -612 | -548 | 372 | 249 | 217 | -399 | 771 | -681 | 253 | 371 | -41 |
Prepaid expenses and other current assets | ||||||||||||
414 | -468 | -27 | 486 | 17 | -213 | -447 | 242 | 668 | -331 | 262 | 121 | 185 |
Operating lease, right-of-use asset | ||||||||||||
-356 | -349 | -343 | -339 | -334 | - | - | - | - | - | - | - | - |
Other assets | ||||||||||||
-427 | -1 | 1 | 0 | 427 | 0 | 0 | 0 | 419 | - | - | - | - |
Accounts payable | ||||||||||||
-2,555 | 1,589 | -66 | -176 | 317 | 716 | -852 | -838 | 1,341 | -774 | 303 | 501 | -61 |
Accrued expenses and other current liabilities | ||||||||||||
-1,008 | 593 | 609 | -138 | 696 | -124 | 2,780 | 1,135 | -908 | - | - | - | - |
Accrued expenses and other current liabilities | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | 338 | -761 |
Deferred rent | ||||||||||||
- | - | - | - | - | -17 | -17 | -14 | -4 | -5 | -4 | -1 | 8 |
Operating lease liability | ||||||||||||
-387 | -380 | -374 | -366 | -352 | - | - | - | - | - | - | - | - |
Deferred revenue | ||||||||||||
-474 | -13,402 | -458 | -1,760 | -1,014 | -2,137 | -623 | -465 | -619 | - | - | - | - |
Deferred revenue | ||||||||||||
- | - | - | - | - | - | - | - | - | - | -820 | -821 | -941 |
Net cash used in operating activities | ||||||||||||
-7,893 | -8,445 | -10,207 | -11,344 | -11,518 | -9,020 | -7,575 | -7,913 | -7,981 | - | - | - | - |
Net cash used in operating activities | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | -7,268 |
Cash flows from investing activities: | ||||||||||||
Purchases of property and equipment | ||||||||||||
- | 13 | -22 | 0 | 42 | 0 | 86 | 388 | 75 | 100 | 275 | 217 | 320 |
Purchases of marketable securities | ||||||||||||
- | - | - | - | - | - | - | - | - | 0 | 0 | 2,000 | 4,500 |
Proceeds from maturities and sales of marketable securities | ||||||||||||
- | 0 | 0 | 7,996 | 14,992 | 15,000 | 10,000 | 6,700 | 6,000 | 5,000 | 6,000 | 6,000 | 4,000 |
Net cash provided by investing activities | ||||||||||||
- | -13 | 226 | 7,996 | 14,950 | 15,000 | 9,914 | -41,370 | 5,925 | - | - | - | - |
Cash flows from financing activities: | ||||||||||||
Net cash provided by (used in) investing activities | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | -820 |
Proceeds from issuance of common stock upon stock option exercises | ||||||||||||
38 | 0 | 0 | 97 | 11 | 395 | 175 | 11 | 28 | - | - | - | - |
Proceeds from issuance of stock from employee stock purchase plan | ||||||||||||
35 | - | - | - | - | - | - | - | - | - | - | - | - |
Payments of initial public offering costs | ||||||||||||
- | - | - | - | - | 0 | 0 | 1,493 | 563 | - | - | - | - |
Net cash provided by financing activities | ||||||||||||
73 | 0 | 0 | 97 | 11 | 395 | 175 | 70,311 | -535 | - | - | - | - |
Net (decrease) increase in cash, cash equivalents and restricted cash | ||||||||||||
-7,820 | -8,458 | -9,981 | -3,251 | 3,443 | 6,375 | 2,514 | 21,028 | -2,591 | - | - | - | - |
Net increase (decrease) in cash, cash equivalents and restricted cash | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | -1,978 | -8,088 |
Supplemental disclosure of noncash investing and financing information: | ||||||||||||
Purchases of property and equipment included in accounts payable | ||||||||||||
- | - | - | - | - | - | - | -27 | 108 | - | - | - | - |
Deferred offering costs included in accounts payable and accrued expenses | ||||||||||||
- | - | - | - | - | - | - | - | 956 | - | - | - | - |
Accretion of redeemable convertible preferred stock to redemption value | ||||||||||||
- | - | - | - | - | 0 | 0 | 0 | 16 | 16 | 16 | 17 | 16 |