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Acquisition of C Technologies, Inc. - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 4 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2019 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Business Acquisition [Line Items] |  |  |  |  |
Cash consideration |  |  | $ 182,154 |  |
Value of common stock issued |  |  | 53,938 |  |
Fair value of tangible assets acquired | $ 30,756 | $ 30,756 | 30,756 |  |
Fair value of acquired finite lived intangible assets | 90,830 | 90,830 | 90,830 |  |
Goodwill | 468,845 | 468,845 | 468,845 |  | $ 326,735
Acquisition-related Costs [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Transaction costs | 4,000 | 4,000 | 4,000 |  |
Fair Value Adjustment to Inventory [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Inventory purchase accounting adjustments |  |  | 1,500 |  |
Selling, general and administrative |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Transaction costs |  |  | 4,000 |  |
Spectrum Inc. |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash consideration |  |  | $ 185,949 |  |
Shares issued for business acquisition |  |  | 779,221 |  |
Value of common stock issued |  |  | $ 53,938 |  |
Business combination, consideration transferred |  |  | 239,887 |  |
Fair value of tangible assets acquired | 6,200 | 6,200 | 6,200 |  |
Fair value of acquired finite lived intangible assets | 90,800 | 90,800 | 90,800 |  |
Cash consideration for future employment |  |  | 9,000 |  |
C Technologies |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash consideration |  |  | 195,000 |  |
Fair value of acquired finite lived intangible assets | 90,800 | 90,800 | 90,800 |  |
Goodwill | 142,903 | 142,903 | 142,903 |  |
Business acquisition, revenue | 7,000 | 9,100 |  |  |
Pro forma adjustments amortization |  |  | 3,600 |  | 4,000
Pro forma adjustments stock based compensation |  |  | 500 |  | $ 500
Business acquisitions proforma net loss | 1,200 | 2,700 | 21,012 | $ 15,205 |
C Technologies | Accounting Standards Update 2015-16 [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash consideration |  |  | 186,000 |  |
C Technologies | Goodwill [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible Asset Residual Value | $ 142,900 | $ 142,900 | $ 142,900 |  |

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