Significant Accounting Policies (Details 4) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2013
Schedule of activity in the restructuring liability
Balance at December 31, 2012	$ 1,701
Accruals	(22)
Payments	(1,430)
Balance at June 30, 2013	249
Employee separation costs [Member]
Schedule of activity in the restructuring liability
Balance at December 31, 2012	1,604
Accruals
Payments	(1,430)
Balance at June 30, 2013	174
Facilities related charges [Member]
Schedule of activity in the restructuring liability
Balance at December 31, 2012	97
Accruals	(22)
Payments
Balance at June 30, 2013	$ 75

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b))

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

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Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

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

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-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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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