Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013 Country	Mar. 31, 2012
Summary of Significant Accounting Policies (Textual) [Abstract]
Number of Countries in which Entity Operates	14
Losses resulting from foreign currency transactions	$ 92	$ 95
Percent of renewals within median VSOE range	80.00%
Range within median renewal percentage rate	15.00%
Software development costs were capitalized	$ 0
Maximum [Member]
Cash and Cash Equivalents [Line Items]
Estimated useful lives of assets	7 years
Product warranty period	2 years
Extended product warranty period	4 years
Minimum [Member]
Cash and Cash Equivalents [Line Items]
Estimated useful lives of assets	3 years
Product warranty period	1 year
Extended product warranty period	1 year
Software Development Costs [Member] \| Maximum [Member]
Cash and Cash Equivalents [Line Items]
Estimated economic life of product	5 years
Software Development Costs [Member] \| Minimum [Member]
Cash and Cash Equivalents [Line Items]
Estimated economic life of product	2 years
Patents [Member]
Cash and Cash Equivalents [Line Items]
Estimated useful lives of assets	20 years
Patented Technology [Member] \| Maximum [Member]
Cash and Cash Equivalents [Line Items]
Estimated useful lives of assets	7 years
Patented Technology [Member] \| Minimum [Member]
Cash and Cash Equivalents [Line Items]
Estimated useful lives of assets	3 years

Additions made to capitalized computer software costs during the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275

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- Definition

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.

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- Definition

The aggregate foreign currency transaction gain (loss) (both realized and unrealized) included in determining net income for the reporting period. Excludes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements. For certain enterprises, primarily banks, that are dealers in foreign exchange, foreign currency transaction gains (losses) may be disclosed as dealer gains (losses).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 52

-Paragraph 30

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6450189&loc=d3e30690-110894

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6450222&loc=d3e30840-110895

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 20

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6450189&loc=d3e30700-110894

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- Definition

The number of countries in which the entity operates as of balance sheet date.

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Estimated economic life of product.

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Extended product warranty period.

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- Definition

Upper and lower end of the range that includes the median percentage renewal rate.

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- Definition

Percentage of renewals included in the acceptable VSOE range.

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- Definition

Product warranty period.

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