| 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 | Dec'13 | Sep'13 | Jun'13 | Mar'13 | Dec'12 | Sep'12 | Jun'12 | Mar'12 | Dec'11 | Sep'11 | Jun'11 | Mar'11 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cash flows from operating activities: | ||||||||||||||||||||||||||||||
Net loss | ||||||||||||||||||||||||||||||
790 | -2,221 | -1,798 | -2,311 | -8,894 | -2,579 | -1,541 | -2,419 | -890 | -2,225 | -1,783 | -2,801 | -2,002 | -5,594 | -5,863 | -4,974 | -6,834 | -7,195 | -5,310 | -5,176 | -4,986 | -3,405 | -4,994 | -2,364 | -2,582 | -5,063 | -5,144 | -4,564 | -5,278 | -5,550 | -6,010 |
Adjustments to reconcile net loss to net cash flow from operating activities: | ||||||||||||||||||||||||||||||
Depreciation and amortization | ||||||||||||||||||||||||||||||
8,684 | 8,642 | 8,304 | 8,433 | 8,483 | 8,371 | 8,467 | 8,663 | 8,325 | 7,913 | 7,736 | 7,475 | 7,767 | 7,793 | 7,680 | 7,402 | 6,952 | 6,752 | 6,591 | 6,418 | 6,171 | 6,179 | 6,080 | 6,178 | 5,915 | 5,860 | 5,720 | 5,672 | 5,956 | 5,769 | 5,690 |
Stock-based compensation | ||||||||||||||||||||||||||||||
2,084 | 2,280 | 2,697 | 2,853 | 3,360 | 2,750 | 2,574 | 2,429 | 2,294 | 2,780 | 2,614 | 3,008 | 3,000 | 2,863 | 3,727 | 3,585 | 3,556 | 3,099 | 2,641 | 808 | 2,395 | 2,789 | 2,646 | 2,190 | 2,961 | 3,053 | 3,199 | 2,927 | 3,465 | 3,287 | 3,414 |
Other | ||||||||||||||||||||||||||||||
-422 | -796 | -418 | -948 | -1,394 | -412 | 623 | -3,331 | 325 | 524 | 37 | -554 | 65 | -305 | -508 | -685 | -742 | -370 | -80 | -377 | -1,025 | -996 | -230 | -470 | -702 | -1,551 | -794 | -677 | -650 | -863 | -874 |
Changes in operating assets and liabilities: | ||||||||||||||||||||||||||||||
Accounts receivable | ||||||||||||||||||||||||||||||
31,591 | -3,837 | 2,458 | 1,387 | -1,836 | -7,518 | 6,911 | 1,887 | 521 | 1,131 | 3,849 | -5,430 | 4,245 | 2,317 | -2 | -2,866 | -3,873 | 5,809 | 5,118 | -2,378 | 1,620 | -1,219 | 3,072 | -612 | 1,902 | 72 | 1,779 | -1,641 | 1,661 | 1,086 | 667 |
Inventory | ||||||||||||||||||||||||||||||
7,982 | 5,442 | 7,302 | 4,763 | 2,994 | 7,312 | 7,848 | 9,043 | 9,493 | 7,053 | 5,480 | 1,136 | 2,954 | 2,335 | 5,688 | 5,277 | 12,263 | 9,299 | 8,224 | 5,578 | 2,431 | 5,717 | 6,350 | 2,907 | 3,829 | 3,071 | 4,738 | 1,175 | 1,833 | 6,692 | 6,671 |
Prepaid expenses and other assets | ||||||||||||||||||||||||||||||
971 | -789 | 16 | 1,649 | -876 | 265 | 7 | 689 | -471 | 531 | -681 | -8 | 254 | -88 | -81 | 1,201 | 463 | 157 | 393 | -2,065 | -35 | 1,110 | 1,474 | 1,239 | 214 | 74 | 96 | -576 | 1,521 | 222 | 324 |
Accounts payable | ||||||||||||||||||||||||||||||
4,787 | -118 | 481 | 1,864 | -2,287 | -3,799 | 4,200 | -398 | 1,145 | -399 | 3,184 | -2,162 | 28 | -4,291 | 3,650 | -8,509 | 349 | 246 | 7,702 | -2,282 | -1,906 | -2,169 | 4,124 | 1,702 | 83 | -914 | -32 | -3,343 | -3,175 | 1,486 | 3,985 |
Accrued expenses and other liabilities | ||||||||||||||||||||||||||||||
3,825 | 4,673 | -1,417 | -488 | 873 | 2,420 | -4,579 | 1,126 | 2,739 | 1,829 | -1,553 | 699 | 1,972 | 1,122 | -3,158 | 2,268 | 761 | 1,545 | -339 | 4,928 | -2,577 | -1,054 | -216 | 1,572 | 653 | 1,122 | 1,916 | -519 | 2,641 | 1,441 | -3,887 |
Deferred revenues | ||||||||||||||||||||||||||||||
27,773 | 519 | 222 | -687 | -460 | -420 | -1,026 | -1,519 | -1,915 | 12 | 979 | -2,149 | 753 | -434 | -523 | 81 | 341 | -385 | -1,010 | 820 | -1,268 | -2,552 | -1,887 | -543 | -2,103 | -98 | -1,248 | 332 | 687 | 27 | 602 |
Net cash provided by operating activities | ||||||||||||||||||||||||||||||
7,821 | 13,755 | -869 | 2,813 | 2,187 | 7,096 | -7,294 | -406 | 1,830 | 671 | 2,492 | 8,926 | 4,000 | -2,800 | 416 | -3,074 | -2,986 | -10,833 | -3,380 | 4,758 | -5,162 | -4,824 | -4,913 | 5,671 | -316 | 2,294 | -1,408 | 2,224 | -69 | -677 | -2,994 |
Cash flows from investing activities: | ||||||||||||||||||||||||||||||
Cash paid for acquisitions, net of cash acquired | ||||||||||||||||||||||||||||||
- | - | - | - | - | - | - | 0 | 0 | 0 | 513 | 0 | 0 | 0 | 0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Purchases of property and equipment | ||||||||||||||||||||||||||||||
2,123 | 1,149 | 1,092 | 1,644 | 2,617 | 3,328 | 1,605 | 2,052 | 1,330 | 2,106 | 3,360 | 4,384 | 2,972 | 2,156 | 2,025 | 6,717 | 4,698 | 3,767 | 4,915 | 5,879 | 4,999 | 3,345 | 2,023 | 1,742 | 1,999 | 2,389 | 1,564 | 1,826 | 1,331 | 1,376 | 623 |
Net cash used in investing activities | ||||||||||||||||||||||||||||||
-2,123 | -1,149 | -1,092 | -1,644 | -5,217 | -3,328 | -1,605 | -2,052 | -1,330 | -2,106 | -3,873 | -4,111 | -2,569 | -2,156 | -2,025 | -6,717 | -4,698 | -3,767 | -4,915 | -5,879 | -7,233 | -3,345 | -2,023 | -1,742 | -1,999 | -2,389 | -1,564 | -1,826 | -1,331 | -1,376 | -623 |
Cash flows from financing activities: | ||||||||||||||||||||||||||||||
Issuance of shares under stock incentive plans, net of payroll taxes paid | ||||||||||||||||||||||||||||||
417 | 1,918 | -268 | 984 | 2,898 | 3,379 | 4,742 | 2,317 | 1,780 | 2,003 | -106 | 3,020 | 1,669 | 1,007 | 967 | 7,598 | 925 | 1,150 | 1,460 | 2,439 | 788 | 1,526 | 731 | -282 | 1,874 | 1,541 | 2,115 | 1,494 | 2,573 | 2,447 | 1,451 |
Investment by noncontrolling interest holder | ||||||||||||||||||||||||||||||
- | - | - | - | - | - | - | 45 | 231 | 679 | 300 | 458 | 0 | 471 | 0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Purchase of treasury stock | ||||||||||||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 0 | 7 | 2,526 |
Repayments on loans and lines of credit | ||||||||||||||||||||||||||||||
14 | 36 | 14 | 38 | 18 | 33 | 75 | 159 | 69 | 89 | 67 | 83 | 16 | 34 | 10 | 36 | 12 | 38 | 12 | - | - | - | 0 | - | - | - | - | 0 | 15 | 16 | 15 |
Repayments on capital leases | ||||||||||||||||||||||||||||||
410 | 382 | 399 | 325 | 315 | 328 | 338 | 437 | 350 | 391 | 412 | 340 | 329 | 328 | 394 | 346 | 340 | 375 | 387 | - | - | 0 | 295 | - | - | - | - | - | - | - | - |
Net cash provided by financing activities | ||||||||||||||||||||||||||||||
-7 | 1,500 | -681 | 621 | 3,017 | 3,018 | 4,329 | 1,766 | 1,592 | 2,202 | -285 | 3,055 | 1,324 | 2,391 | 563 | 8,131 | 333 | -64 | 1,061 | 1,574 | 1,083 | 2,662 | 436 | -282 | 1,874 | 1,019 | 2,115 | 1,494 | 2,558 | 2,424 | -1,090 |
Foreign exchange effect on cash and cash equivalents | ||||||||||||||||||||||||||||||
-34 | -438 | 333 | 159 | 153 | 598 | 393 | -493 | 266 | -22 | 315 | -113 | 203 | -97 | -826 | -34 | -150 | -86 | -71 | 522 | 174 | 1 | -136 | 113 | 261 | -330 | 213 | -230 | -337 | 125 | 298 |
Increase in cash and cash equivalents | ||||||||||||||||||||||||||||||
5,657 | 13,668 | -2,309 | 1,949 | 140 | 7,384 | -4,177 | -1,185 | 2,358 | 745 | -1,351 | 7,757 | 2,958 | -2,662 | -1,872 | -1,694 | -7,501 | -14,750 | -7,305 | 975 | -11,138 | -5,506 | -6,636 | 3,760 | -180 | 594 | -644 | 1,662 | 821 | 496 | -4,409 |
Transfers from inventory to field equipment | ||||||||||||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 5,011 | 3,826 | 4,595 |
Transfers from field equipment to deferred cost of revenues | ||||||||||||||||||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 3,789 | 2,932 | 2,942 |