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Summary of Significant Accounting Policies (Narrative) (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 USD ($) item Customers | Dec. 31, 2014 USD ($)
Provision for doubtful accounts | $ | $ 20 | $ 20
Number of major customers | Customers | 3 |
Percentage of revenue contributed by major customers | 35.00% |
Impairment of intangible assets | $ |  |
Number of operating segments | item | 1 |
Number of reporting units | item | 1 |
Maximum [Member] |  |
Estimated useful life | 3 years |

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- Definition For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5074-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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