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Subsequent Events - Components and Allocation of Purchase Price (Detail) - USD ($) $ in Thousands | Aug. 01, 2017 | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill |  | $ 60,979 | $ 59,548
Spectrum Inc. | Subsequent Event |  |  |
Business Acquisition [Line Items] |  |  |
Cash and cash equivalents | $ 7,071 |  |
Marketable securities | 990 |  |
Accounts receivable | 5,950 |  |
Inventory | 11,349 |  |
Prepaid expenses and other current assets | 891 |  |
Fixed assets | 5,613 |  |
Other assets | 988 |  |
Goodwill | 276,241 |  |
Accounts payable | (1,287) |  |
Accrued liabilities | (2,248) |  |
Deferred tax liabilities, net | (42,629) |  |
Unrecognized tax benefit | (576) |  |
Estimated closing indebtedness | (2,635) |  |
Estimated transaction costs | (1,976) |  |
Net assets acquired | 371,812 |  |
Spectrum Inc. | Customer relationships | Subsequent Event |  |  |
Business Acquisition [Line Items] |  |  |
Business combination, intangible assets | 73,530 |  |
Spectrum Inc. | Technology - developed | Subsequent Event |  |  |
Business Acquisition [Line Items] |  |  |
Business combination, intangible assets | 37,630 |  |
Spectrum Inc. | Trademark | Subsequent Event |  |  |
Business Acquisition [Line Items] |  |  |
Business combination, intangible assets | 2,140 |  |
Spectrum Inc. | Non-competition agreements | Subsequent Event |  |  |
Business Acquisition [Line Items] |  |  |
Business combination, intangible assets | $ 770 |  |

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