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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015 | Dec. 31, 2014
Operating activities: |  |  |  |
Net income (loss) | $ (1,943,628) | $ (108,971) | $ (833,136) | $ 122,486
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: |  |  |  |
Stock based compensation | 164,795 | 48,839 | 75,534 | 14,287
Depreciation and amortization | 389,487 | 58,724 | 121,027 | 9,048
Provision (recovery) for accounts receivable allowances | 8,988 | 34 | (3,915) | 574
Provision for inventory reserves | 10,450 | 22,913 | 18,078 | 81,843
Reclassification out of Accumulated Other Comprehensive Income (Loss) |  |  | 0 | (360,734)
Changes in operating assets and liabilities: |  |  |  |
Accounts receivable | (1,801,446) | (149,635) | 735,776 | (136,768)
Inventories | (1,454,910) | 313,785 | (1,078,181) | (92,269)
Prepaid expense and other current assets | (193,245) | (623,529) | (110,942) | (45,111)
Accounts payable and accrued expenses | 1,084,228 | 32,970 | 704,896 | (4,593)
Net cash provided by (used in) operating activities | (3,735,281) | (404,870) | (370,863) | (411,237)
Investing activities: |  |  |  |
Purchases of plant and equipment | (32,303) | (45,314) | (177,066) | (25,165)
Other assets | (295,000) | 0 | (655,000) | 0
Net cash provided by (used in) investing activities | (327,303) | (45,314) | (832,066) | (25,165)
Financing activities: |  |  |  |
Proceeds from stock option exercise | 249,389 | 19,425 | 102,620 | 0
Proceeds from private placement offering | 0 | 3,421,001 | 3,437,001 | 0
Proceeds from private placement offering (net of issuance costs) | 0 | 228,960 | (16,000) | 0
Proceeds from stock rights offering (net of issuance costs) |  |  | 268,740 | 0
Issuance costs of stock rights offering |  |  | (39,780) | 0
Net funds (to) from bank credit lines | 2,141,799 | (840,585) | (840,585) | 522,267
Net cash provided by (used in) financing activities | 2,391,188 | 2,828,801 | 2,911,996 | 522,267
Effect of exchange rate changes on cash |  |  | 0 | (3,621)
Net change in cash | (1,671,396) | 2,378,617 | 1,709,067 | 82,244
Cash and cash equivalents at beginning of year | 1,846,704 | 137,637 | 137,637 | 55,393
Cash and cash equivalents at end of year | 175,308 | 2,516,254 | 1,846,704 | 137,637
Cash paid during the period for: |  |  |  |
Cash paid during the period for: Interest | 32,115 | 72,360 | 72,360 | 77,225
Cash paid during the period for: Income taxes | $ 3,312 | $ 5,757 | $ 7,363 | $ 7,080

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.5) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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Period Type: | duration

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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