Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

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The number of positions eliminated during the period as a result of restructuring activities.

+ References

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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

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+ 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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-Name Staff Accounting Bulletin (SAB)
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Restructuring Expenses - Additional Information (Details) $ in Thousands			12 Months Ended
	Aug. 18, 2014 USD ($)	May. 22, 2014 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2013 USD ($) Employee	Dec. 31, 2014 USD ($)
Restructuring Cost And Reserve [Line Items]
Severance costs				$ 5,500
Restructuring reserve balance			$ 1,110		$ 2,106
Restructuring reserve charges			403
Sub-lease 1 [Member] \| Facility Closing [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring reserve charges		$ 900
Sub Lease 2 [Member] \| Facility Closing [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring reserve charges	$ 700
Property Subject to Operating Lease [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring reserve balance			1,039		$ 1,282
Other non-current liabilities [Member] \| Property Subject to Operating Lease [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring reserve balance			800
Accrued Expenses [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring reserve balance			100
Accrued Expenses [Member] \| Property Subject to Operating Lease [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring reserve balance			$ 200
Operating Expense [Member]
Restructuring Cost And Reserve [Line Items]
Number of positions eliminated \| Employee				59