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Property and Equipment - Additional Information (Detail) - USD ($) |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Feb. 17, 2017 | Jan. 06, 2017 | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Depreciation and Other Amortization Expenses [Line Items] |  |  |  |  |  |
Loss on impairment of property and equipment |  |  | $ 111,000 |  | $ 111,000 |
Cash received from property, plant and equipment |  |  |  |  | 24,000 | $ 17,000
Land, Buildings and Improvements | California |  |  |  |  |  |
Depreciation and Other Amortization Expenses [Line Items] |  |  |  |  |  |
Amount of divestiture of long-lived |  | $ 17,300,000 |  |  |  |
Cash received from property, plant and equipment | $ 17,300,000 |  |  |  |  |
Net cash received from property, plant and equipment |  | 16,700,000 |  |  |  |
Payments for commissions and other fees |  | $ 600,000 |  |  |  |
Construction in Progress |  |  |  |  |  |
Depreciation and Other Amortization Expenses [Line Items] |  |  |  |  |  |
Loss on impairment of property and equipment |  |  | $ 100,000 | $ 0 | $ 100,000 | $ 0

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- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 225 -Section 45 -Paragraph 11 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84241808&loc=d3e92212-112881 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=98514028&loc=d3e3602-108585 Reference 3: 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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84176398&loc=d3e2921-110230 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585 + Details
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