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v3.19.2

CONDENSED STATEMENTS OF CASH FLOWS - USD ($) | 6 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018
Operating activities: |  |
Net income | $ 3,934,406 | $ 2,196,164
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Change in allowance for doubtful accounts | 15,124 | 12,137
Change in provision for excess and obsolete inventory | 115,600 | 73,581
Depreciation and amortization | 672,676 | 830,163
Stock-based compensation | 850,789 | 858,408
Deferred income taxes, net | 35,574 | (167,401)
Loss on maturities of investments | 3,778 | 1,100
Changes in operating assets and liabilities: |  |
Accounts receivable | (1,682,525) | (214,896)
Inventory | (494,108) | (300,990)
Prepaid expenses and other current assets | (600,485) | (849,413)
Other assets | (10,830) | (20,316)
Accounts payable | 178,912 | (56,199)
Accrued payroll and benefits | (243,044) | (175,946)
Other accrued taxes | (80,451) | (46,810)
Warranty reserve | 533 | (262)
Deferred revenue | 371,317 | 527,305
Prepaid income taxes, net of accrued income taxes | 78,366 | 439,084
Net cash provided by operating activities | 3,145,632 | 3,105,709
Investing activities: |  |
Purchases of investments |  | (918,417)
Proceeds from maturity of investments | 1,050,000 | 830,000
Purchases of property and equipment | (118,962) | (105,328)
Capitalized intangible assets | (34,399) | (6,545)
Net cash provided by (used in) investing activities | 896,639 | (200,290)
Financing activities: |  |
Proceeds from exercises of stock options | 500,247 | 235,080
Taxes paid related to the net share settlement of equity awards | (148,212) | (15,596)
Net cash provided by financing activities | 352,035 | 219,484
Net increase in cash and cash equivalents | 4,394,306 | 3,124,903
Cash and cash equivalents, beginning of period | 28,027,688 | 18,205,976
Cash and cash equivalents, end of period | 32,421,994 | 21,330,879
Supplemental disclosure of cash flow information: |  |
Cash paid for income taxes | 12,000 | 363,050
Right-of-use asset recognized in exchange for new lease obligation | 3,182,724 |
Operating and short-term lease payments recorded within cash flow from operating activities | $ 213,336 | $ 205,448

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- Definition Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.5) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130534-203044 + Details
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- Definition The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.3(a)) -URI http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263 + Details
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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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