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Consolidated Statements of Cash Flows - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
OPERATING ACTIVITIES |  |  |
Net (loss) | $ (17,388,000) | $ (12,380,000) | $ (17,725,000)
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities: |  |  |
Depreciation | 1,780,000 | 2,067,000 | 1,922,000
Amortization | 1,720,000 | 2,138,000 | 2,384,000
Loss (gain) on disposal of equipment | 60,000 | (26,000) | 0
Allowance for doubtful accounts | (111,000) | 0 | 762,000
Deferred income taxes | 1,196,000 | 4,916,000 | (9,524,000)
Stock compensation expense | 1,991,000 | 1,809,000 | 2,322,000
Goodwill and intangible assets impairment | 2,074,000 | 1,425,000 | 23,400,000
Excess and obsolete inventory reserve | 825,000 | 0 | 0
Changes in operating assets and liabilities, net of acquisitions: |  |  |
Accounts receivable | 3,522,000 | 7,880,000 | 6,117,000
Inventories | 446,000 | (560,000) | (616,000)
Prepaid expenses, other current assets and other noncurrent assets | 2,893,000 | (1,245,000) | (913,000)
Accounts payable | (2,445,000) | 1,817,000 | (3,600,000)
Accrued liabilities and other noncurrent liabilities | 699,000 | (913,000) | 906,000
Net cash (used in) provided by operating activities | (2,738,000) | 6,928,000 | 5,435,000
INVESTING ACTIVITIES |  |  |
Purchases of property, equipment and patents | (940,000) | (802,000) | (2,808,000)
Proceeds from the sale of equipment | 2,000 | 26,000 | 0
Purchases of other intangible assets | 0 | 0 | (3,010,000)
Payment for acquisitions, net of cash acquired | 0 | 0 | (8,079,000)
Net cash used in investing activities | (938,000) | (776,000) | (13,897,000)
FINANCING ACTIVITIES |  |  |
Payments on short-term borrowings | 0 | (1,623,000) | 0
Proceeds from exercises of stock options | 0 | 0 | 297,000
Excess tax benefit from exercises of stock options | 0 | 0 | 7,000
Change in restricted cash | (6,020,000) | 0 | 0
Treasury shares withheld | (172,000) | (252,000) | (304,000)
Net cash used in financing activities | (6,192,000) | (1,875,000) | 0
Effect of exchange rate fluctuations on cash | 10,000 | (1,230,000) | (639,000)
Net (decrease) increase in cash and cash equivalents | (9,858,000) | 3,047,000 | (9,101,000)
Cash and cash equivalents at beginning of year | 21,684,000 | 18,637,000 | 27,738,000
Cash and cash equivalents at end of year | 11,826,000 | 21,684,000 | 18,637,000
Cash paid for: |  |  |
Interest | 0 | 27,000 | 125,000
Income taxes paid | $ 368,000 | $ 0 | $ 0

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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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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=63488584&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=66902209&loc=d3e3602-108585 + Details
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- Definition The cash outflow for a borrowing having initial term of repayment within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + 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://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=66902209&loc=d3e3602-108585 + Details
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