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Debt - Schedule of Short Term Debt (Detail) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Short-term Debt [Line Items] |  |
Short term debt | $ 10,931 | $ 3,986
Term Loan Facility [Member] |  |
Short-term Debt [Line Items] |  |
Short term debt | 6,500 | 0
Japan [Member] | Line of Credit [Member] |  |
Short-term Debt [Line Items] |  |
Short term debt | 3,701 | 2,724
Japan [Member] | Receivables Financing Facility [Member] |  |
Short-term Debt [Line Items] |  |
Short term debt | 730 | 665
Austrian [Member] | Loans Due Through March 2020 and other debt [Member] |  |
Short-term Debt [Line Items] |  |
Short term debt | $ 0 | $ 597

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