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Consolidated Statements of Cash Flows - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
OPERATING ACTIVITIES: |  |
Net income (loss) | $ 473,000 | $ (1,249,000)
Adjustments to reconcile net income (loss) to net cash used for operating activities: |  |
Depreciation and amortization | 330,000 | 248,000
Stock-based compensation expense | 52,000 | 31,000
Gain on sale of long-term investment | (1,838,000) |
Non-cash investment expense | 103,000 | 750,000
Non-cash interest income | (16,000) |
Equity in loss of affiliate company | 39,000 | 43,000
Loss on disposal of property and equipment | 2,000 | 1,000
Changes in operating assets and liabilities: |  |
Accounts receivable, net | 121,000 | (367,000)
Other current assets | (1,213,000) | (562,000)
Other long term assets | (72,000) | (42,000)
Accounts payable | 20,000 | 223,000
Accrued payroll | 80,000 | 20,000
Deferred revenue, current portion | (621,000) | (356,000)
Accrued expenses | 55,000 | 18,000
Other current liabilities | 70,000 | 95,000
Deferred revenue, net of current portion | (34,000) | (110,000)
Other long-term liabilities | (18,000) |
Net cash used for operating activities | (2,467,000) | (1,257,000)
INVESTING ACTIVITIES: |  |
Purchases of property and equipment | (894,000) | (313,000)
Advances on note and interest receivable | (1,250,000) |
Purchase of long-term investment | (1,000,000) | (50,000)
Proceeds from sale of long-term investments | 1,936,000 | 4,448,000
Net cash provided by (used for) investing activities | (1,208,000) | 4,085,000
FINANCING ACTIVITIES: |  |
Distribution of dividend to stockholders |  | (3,056,000)
Sale of capital stock pursuant to exercise of option |  | 14,000
Net cash used for financing activities |  | (3,042,000)
Net cash used for discontinued operations |  | (120,000)
Effects of exchange rate changes on cash | (25,000) | (1,000)
Net decrease in cash | (3,700,000) | (335,000)
Cash at beginning of year | 17,724,000 | 18,059,000
Cash at end of year | 14,024,000 | 17,724,000
Supplemental disclosure of cash flow information: |  |
Cash paid for income taxes | 28,000 | 120,000
Unfunded investment in privately-held technology company |  | $ 1,000,000

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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=98514028&loc=d3e3602-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration