Summary of Significant Accounting Policies (Narrative) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2017 USD ($) item Customers	Mar. 13, 2018 USD ($)	Dec. 31, 2016 USD ($)
Provision for doubtful accounts \| $	$ 20		$ 20
Number of major customers \| Customers	2
Percentage of revenue contributed by major customers	34.00%
Number of operating segments \| item	1
Number of reporting units \| item	1
Subsequent Event [Member]
Total receivables associated with aborted cloud architecture project still outstanding \| $		$ 10,000
Maximum [Member]
Estimated useful life	3 years

Number of major customers

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- Definition

Total revenues from major customers.

+ References

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- Definition

Net receivables associated with aborted cloud architecture project still outstanding.

+ References

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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=84173941&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

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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- Definition

Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

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No definition available.

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