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Acquisitions - Schedule of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands | Jun. 01, 2018 | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Assets Acquired |  |  |
Goodwill |  | $ 16,935 | $ 0
Quickthree Solutions |  |  |
Assets Acquired |  |  |
Accounts receivable | $ 112 |  |
Inventory | 1,700 |  |
Prepaid expenses and other current assets | 126 |  |
Total current assets acquired | 1,938 |  |
Property, plant and equipment | 740 |  |
Goodwill | 16,935 |  |
Other assets | 225 |  |
Total non-current assets acquired | 37,870 |  |
Total assets acquired | 39,808 |  |
Liabilities Assumed |  |  |
Accounts payable | 331 |  |
Accrued and other expenses | 399 |  |
Total liabilities assumed | 730 |  |
Estimated fair value of net assets acquired | 39,078 |  |
Trade name | Quickthree Solutions |  |  |
Assets Acquired |  |  |
Trade name | 900 |  |
Customer relationships | Quickthree Solutions |  |  |
Assets Acquired |  |  |
Intangibles | $ 270 |  |
Liabilities Assumed |  |  |
Useful Life (in years) | 1 year |  |
Developed technology | Quickthree Solutions |  |  |
Assets Acquired |  |  |
Intangibles | $ 18,800 |  |
Liabilities Assumed |  |  |
Useful Life (in years) | 13 years |  |

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