| 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 | Dec'14 | Sep'14 | Jun'14 | Mar'14 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Revenues | ||||||||||||||||||||||||
2,261 | 2,562 | 2,410 | 2,319 | 1,840 | 2,028 | 2,020 | 2,058 | 1,809 | - | 2,071 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Revenues | ||||||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | 2,459 | 3,491 | 4,679 | 5,316 | 4,680 | 4,539 | 2,857 | 2,721 | 3,047 | 2,088 | 3,073 | 2,632 | 3,389 | 2,119 |
Cost of revenues | ||||||||||||||||||||||||
1,760 | 1,635 | 1,563 | 1,599 | 1,467 | 1,470 | 1,477 | 2,169 | 1,415 | 1,734 | 3,274 | 3,919 | 4,075 | 3,698 | 3,742 | 3,645 | 3,360 | 1,806 | 1,750 | 1,634 | 1,288 | 1,571 | 1,471 | 1,968 | 1,503 |
Gross profit | ||||||||||||||||||||||||
501 | 927 | 847 | 720 | 373 | 558 | 543 | -111 | 394 | 179 | -1,203 | -1,460 | -584 | 981 | 1,574 | 1,035 | 1,179 | 1,051 | 971 | 1,413 | 800 | 1,502 | 1,161 | 1,421 | 616 |
Operating expenses: | ||||||||||||||||||||||||
Research and development | ||||||||||||||||||||||||
1,594 | 1,572 | 1,371 | 1,335 | 1,414 | 1,669 | 1,404 | 1,159 | 1,777 | 1,977 | 2,322 | 3,097 | 3,923 | 4,031 | 3,591 | 3,867 | 4,047 | 3,928 | 3,955 | 3,951 | 3,860 | 2,874 | 2,731 | 2,763 | 2,856 |
Selling, general and administrative | ||||||||||||||||||||||||
4,386 | 4,366 | 4,091 | 4,091 | 3,986 | 4,961 | 4,499 | 4,444 | 4,500 | 4,685 | 4,928 | 6,189 | 9,318 | 8,914 | 9,414 | 9,461 | 12,161 | 9,429 | 6,892 | 6,545 | 6,365 | 5,603 | 4,575 | 4,186 | 4,139 |
Restructuring charges | ||||||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | 416 | 519 | - | - | - | - | - | - | - | - | - | - | - | - | - |
Total operating expenses | ||||||||||||||||||||||||
5,980 | 5,938 | 5,462 | 5,426 | 5,400 | 6,630 | 5,903 | 5,603 | 6,277 | 8,772 | 7,666 | 9,805 | 13,241 | 12,945 | 13,005 | 13,328 | 16,208 | 13,357 | 10,847 | 10,496 | 10,225 | 8,477 | 7,306 | 6,949 | 6,995 |
Loss from operations | ||||||||||||||||||||||||
-5,479 | -5,011 | -4,615 | -4,706 | -5,027 | -6,072 | -5,360 | -5,714 | -5,883 | -8,593 | -8,869 | -11,265 | -13,825 | -11,964 | -11,431 | -12,293 | -15,029 | -12,306 | -9,876 | -9,083 | -9,425 | -6,975 | -6,145 | -5,528 | -6,379 |
Interest income | ||||||||||||||||||||||||
30 | 46 | 70 | 90 | 82 | 77 | 54 | 50 | 33 | 20 | 25 | 31 | 32 | 37 | 27 | 28 | 33 | 17 | 11 | 9 | 3 | 1 | 0 | 0 | 1 |
Interest expense | ||||||||||||||||||||||||
398 | 389 | 377 | 364 | 350 | 334 | 324 | 362 | 4,672 | 1,579 | 1,599 | 1,571 | 1,550 | 1,564 | 1,553 | 1,235 | 1,172 | 1,166 | 1,334 | 1,344 | 1,323 | 1,111 | 1,712 | 1,620 | 1,573 |
Other (expense) income, net | ||||||||||||||||||||||||
-4 | 233 | 299 | 329 | 240 | 239 | 242 | 227 | 241 | 2 | 0 | 6 | 3 | -5 | -12 | 4 | 1 | -2 | -2,058 | 204 | 329 | - | - | - | - |
Other income (expense), net | ||||||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | -920 | 83 | 1 |
Loss before provision for income taxes | ||||||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | -13,457 | -13,257 | -10,214 | -10,416 | - | -8,777 | -7,065 | - |
Loss before provision for income taxes | ||||||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | -7,950 |
Provision for income taxes | ||||||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | -7 | 6 | 1 | -23 | 3 | 13 | 21 |
Net loss and comprehensive loss | ||||||||||||||||||||||||
-5,851 | -5,121 | -4,623 | -4,651 | -5,055 | -6,090 | -5,388 | -5,799 | -10,281 | -10,150 | -10,443 | -12,799 | -15,340 | -13,496 | -12,969 | -13,496 | -16,167 | -13,457 | -13,250 | -10,220 | -10,417 | -8,135 | -8,780 | -7,078 | -7,971 |
Comprehensive loss | ||||||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | -12,799 | - | - | - | - | - | - | - | - | - | - | - | - | - |
Accretion of preferred stock dividends | ||||||||||||||||||||||||
967 | 895 | 895 | 895 | 895 | 836 | 836 | 836 | 410 | - | 0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Deemed dividend arising from beneficial conversion feature of convertible preferred stock | ||||||||||||||||||||||||
- | - | - | - | - | 0 | 0 | 0 | 5,216 | - | 0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Adjustment to net loss resulting from convertible preferred stock modification | ||||||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 0 | 0 | 2,384 | - | - | - | - |
Net loss attributable to common stockholders | ||||||||||||||||||||||||
-6,818 | -6,016 | -5,518 | -5,546 | -5,950 | -6,926 | -6,224 | -6,635 | -15,907 | -10,150 | -10,443 | -12,799 | -15,340 | - | - | - | - | -13,457 | -13,250 | -10,220 | -12,801 | -8,135 | -8,780 | -7,078 | -7,971 |
Net loss per share attributable to common stockholders, basic and diluted (in dollars per share) | ||||||||||||||||||||||||
-0.47 | -0.21 | -0.70 | -0.87 | -1.40 | -10.04 | -5.56 | -9.83 | -7.99 | -10.40 | -17.20 | -21.40 | -25.74 | -103.89 | -29.34 | -1.06 | -1.28 | -171.66 | -1.08 | -0.83 | -1.53 | -5,228.71 | -36.43 | -29.25 | -32.94 |
Weighted average common shares used to compute net loss per share, basic and diluted (in shares) | ||||||||||||||||||||||||
14,616 | 10,431 | 7,900 | 6,377 | 4,248 | 486 | 1,119 | 675 | 1,992 | 807 | 607 | 598 | 596 | -24,189 | 442 | 12,734 | 12,669 | -31,757 | 12,280 | 12,240 | 8,373 | 23 | 0 | 0 | 0 |