For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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-Section 50
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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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 210.5-03.1)
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Geographic Information (External Revenue and Long-Lived Assets by Geographic Region) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 21,584	$ 24,519	$ 40,466	$ 46,704
Long-Lived Assets	3,593		3,593		$ 4,050
Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	2,543		2,543		2,808
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	11,916	13,613	20,956	23,865
Americas (Excluding the U.S.) [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	2,665	1,857	3,955	4,620
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	4,251	5,299	7,448	9,527
Long-Lived Assets	1,034		1,034		1,223
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	2,752	$ 3,750	8,107	$ 8,692
Long-Lived Assets	$ 16		$ 16		$ 19
Revenue [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration percentage	100.00%	100.00%	100.00%	100.00%
Revenue [Member] \| United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration percentage	55.00%	56.00%	52.00%	51.00%
Revenue [Member] \| Americas (Excluding the U.S.) [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration percentage	12.00%	7.00%	10.00%	10.00%
Revenue [Member] \| Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration percentage	20.00%	22.00%	18.00%	20.00%
Revenue [Member] \| Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration percentage	13.00%	15.00%	20.00%	19.00%