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
-SubTopic 10
-Section 50
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: 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
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-Section 50
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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								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 20,902	$ 18,947	$ 21,584	$ 18,882	$ 18,562	$ 22,933	$ 24,519	$ 22,185	$ 80,315	$ 88,199	$ 86,538
Long-Lived Assets	3,130				4,050				3,130	4,050
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	2,336				2,808				2,336	2,808
Americas (Excluding the U.S.)
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	0				0				0	0
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	782				1,223				782	1,223
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	12				19				12	19
Israel
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 1,200				$ 800				1,200	800
Sales Revenue, Net
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									$ 80,315	$ 88,199	$ 86,538
Concentration risk percentage									100.00%	100.00%	100.00%
Sales Revenue, Net \| United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									$ 39,727	$ 42,933	$ 51,036
Concentration risk percentage									49.00%	49.00%	59.00%
Sales Revenue, Net \| Americas (Excluding the U.S.)
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									$ 8,250	$ 6,828	$ 1,507
Concentration risk percentage									10.00%	8.00%	2.00%
Sales Revenue, Net \| Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									$ 14,531	$ 19,463	$ 20,478
Concentration risk percentage									18.00%	22.00%	24.00%
Sales Revenue, Net \| Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									$ 17,807	$ 18,975	$ 13,517
Concentration risk percentage									23.00%	21.00%	15.00%