v3.8.0.1

Restructuring Charges - Narrative (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 USD ($) ft² | Sep. 24, 2016 USD ($) | Sep. 30, 2017 USD ($) ft² | Apr. 14, 2016 ft²
Capital Leased Assets [Line Items] |  |  |  |
Lease obligation | $ 3,000 |  | $ 3,000 |
Restructuring charges | 3,600 |  | $ 3,620 |
Impairment of leasehold | 500 |  |  |
Write-off of deferred rent and tenant improvement allowances | $ 1,100 |  |  |
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 |  | 25,812 | 10,362
Sublease loss liability |  | $ 500 |  |
Related lease expense |  | $ 200 |  |

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- Definition Amount of capital lease obligation due within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84164758&loc=d3e45023-112735 + Details
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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 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=98514028&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 + Details
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