| Dec'19 | Dec'18 | Dec'17 | Dec'16 | Dec'15 | Dec'14 | Dec'13 |
|---|---|---|---|---|---|---|
Operating activities: | ||||||
Net income | ||||||
9,630 | 6,303 | 499 | 7,214 | - | - | - |
Net income | ||||||
- | - | - | - | 7,529 | 2,050 | 1,936 |
Adjustments to reconcile net income to net cash provided by operating activities: | ||||||
Change in allowance for doubtful accounts | ||||||
31 | 15 | -7 | 12 | 3 | -108 | - |
Change in provision for excess and obsolete inventory | ||||||
48 | 111 | 69 | 94 | 51 | 62 | - |
Depreciation and amortization | ||||||
1,242 | 1,105 | 1,308 | 955 | 807 | 149 | 139 |
Write-off of non-trade accounts receivable | ||||||
- | - | 205 | - | - | - | - |
Excess tax benefit on the exercise of stock options | ||||||
- | - | - | -603 | -1,728 | - | - |
Excess tax benefit on the exercise of stock options | ||||||
- | - | - | - | - | 165 | - |
Stock-based compensation | ||||||
1,854 | 1,764 | 2,454 | 1,841 | 1,220 | 724 | 271 |
Deferred income taxes, net | ||||||
596 | 144 | 150 | 570 | 16 | 167 | 48 |
Impairment of intangible assets | ||||||
- | - | - | - | 55 | - | - |
Loss on maturities of investments | ||||||
10 | -28 | -6 | -83 | -3 | 7 | - |
Changes in operating assets and liabilities: | ||||||
Accounts receivable | ||||||
3,114 | 446 | 201 | -75 | 1,906 | -130 | 396 |
Inventory | ||||||
-123 | 121 | 334 | 1,483 | 308 | 847 | -45 |
Prepaid expenses and other current assets | ||||||
487 | 407 | 1,161 | 702 | 615 | 154 | 40 |
Other assets | ||||||
171 | -65 | 13 | 117 | 113 | 15 | 4 |
Accounts payable | ||||||
149 | 34 | -523 | 1 | 376 | 201 | 19 |
Accrued payroll and benefits | ||||||
363 | 289 | 477 | -252 | 43 | 589 | 114 |
Other accrued taxes | ||||||
463 | 23 | -9 | 88 | -35 | -14 | 60 |
Warranty reserve | ||||||
7 | 13 | 19 | 6 | 6 | 15 | -0 |
Deferred revenue | ||||||
700 | -5 | 944 | 1,723 | - | - | - |
Deferred revenue | ||||||
- | - | - | - | 501 | 186 | -126 |
Other current liability | ||||||
- | -0 | -12 | 120 | - | - | - |
Prepaid income taxes | ||||||
-3 | -1,252 | -155 | 917 | 1,775 | -48 | -494 |
Other | ||||||
-0 | - | - | - | - | -5 | - |
Net cash provided by operating activities | ||||||
10,232 | 7,376 | 3,415 | 9,406 | 7,649 | - | - |
Investing activities: | ||||||
Net cash (used in) provided by operating activities | ||||||
- | - | - | - | - | 2,585 | 1,474 |
Purchases of investments | ||||||
- | 1,124 | 2,693 | 4,992 | - | 7,951 | 4 |
Proceeds from maturity of investments | ||||||
3,687 | 2,905 | 2,495 | - | - | - | - |
Proceeds from maturity of investments | ||||||
- | - | - | -4,575 | -253 | -255 | - |
Purchases of property and equipment | ||||||
368 | 228 | 775 | 780 | 298 | 583 | 163 |
Capitalized intangible assets | ||||||
117 | 36 | 49 | 743 | 16 | 22 | 28 |
Net cash (used in) provided by investing activities | ||||||
3,201 | 1,515 | -1,023 | -1,941 | -61 | -8,302 | -196 |
Financing activities: | ||||||
Proceeds from stock option and warrant exercises | ||||||
2,493 | 1,239 | 76 | 247 | 597 | 105 | - |
Taxes paid for the net share settlement of equity awards | ||||||
473 | 309 | 158 | - | - | - | - |
Income tax benefits credited to equity | ||||||
- | - | - | 603 | 1,728 | 165 | - |
Purchases of treasury stock | ||||||
- | - | 1,818 | 9,969 | - | - | - |
Net cash provided by financing activities | ||||||
2,020 | 929 | -1,900 | -9,118 | 2,326 | - | - |
Net increase in cash and cash equivalents | ||||||
15,454 | 9,821 | 492 | -1,654 | - | - | - |
Net increase (decrease) in cash and cash equivalents | ||||||
- | - | - | - | 9,913 | - | - |
Repayment of officer note payable | ||||||
- | - | - | - | - | 6 | 513 |
Proceeds from the issuance of common stock pursuant to initial public offering | ||||||
- | - | - | - | - | 14,490 | - |
Payment of initial public offering costs | ||||||
- | - | - | - | - | 2,044 | - |
Net cash used in financing activities | ||||||
- | - | - | - | - | 12,709 | -513 |
Net decrease in cash and cash equivalents | ||||||
- | - | - | - | - | 6,992 | 764 |
Supplemental disclosure of cash flow information: | ||||||
Cash paid for income taxes | ||||||
12 | 1,375 | 1,205 | 3,392 | 2,702 | - | - |
Right-of-use asset recognized in exchange for new lease obligation | ||||||
3,182 | - | - | - | - | - | - |
Operating and short-term lease payments recorded within cash flow from operating activities | ||||||
428 | 418 | 409 | - | - | - | - |
Cash paid for income taxes | ||||||
- | - | - | - | - | 1,182 | - |
Cash paid for income taxes | ||||||
- | - | - | - | - | - | 1,390 |