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Property and Equipment - Additional Information (Detail) $ in Millions | 3 Months Ended | 12 Months Ended
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Dec. 31, 2015 USD ($) | Dec. 31, 2016 USD ($) asset_group | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Depreciation and Other Amortization Expenses [Line Items] |  |  |  |
Depreciation and amortization expense |  | $ 2.4 | $ 11.0 | $ 9.8
Number of primary asset groups | asset_group |  | 2 |  |
Impairment charge | $ 242.7 |  |  |
Impairment charges allocated to assets |  |  | 140.4 |
Valencia |  |  |  |
Depreciation and Other Amortization Expenses [Line Items] |  |  |  |
Impairment charge |  | $ 1.8 |  |
Danbury Facility |  |  |  |
Depreciation and Other Amortization Expenses [Line Items] |  |  |  |
Impairment charge |  |  | $ 138.6 |
Property And Equipment Impairment |  |  |  |
Depreciation and Other Amortization Expenses [Line Items] |  |  |  |
Impairment charge |  | 0.7 |  |
Asset held for sale |  |  |  |
Depreciation and Other Amortization Expenses [Line Items] |  |  |  |
Impairment charge |  | $ 0.6 |  |

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: 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 Reference 2: 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=66902209&loc=d3e3602-108585 + Details
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