v3.8.0.1

Restructuring Charges - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)	Sep. 30, 2017 USD ($) ft²	Apr. 01, 2017 USD ($)
Capital Leased Assets [Line Items]
Lease obligation		$ 3,100
Deferred rent liability	$ 462	$ 2,600	$ 0
Impairment of leasehold	500
Additional restructuring charges	$ 500
Massachusetts
Capital Leased Assets [Line Items]
Area of real estate property | ft²		108,743
Massachusetts | Property Subject to Operating Lease
Capital Leased Assets [Line Items]
Area of real estate property | ft²		25,812

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- Definition

Additional Restructuring Charges

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Area of a real estate property.

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Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

+ References

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- Definition

The adjustment to reduce the value of existing agreements that specify the lessee's rights to use the leased property. This expense is charged when the estimates of future profits generated by the leased property are reduced.

+ References

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-Name Accounting Standards Codification
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Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation.

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