Accrued Warranty - Schedule Product Warranty Accrual Included in Accrued Expenses (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2019 |
Dec. 31, 2018 |
|
| Product Warranties Disclosures [Abstract] | ||
| Balanced at beginning of period, Accrued warranty | $ 112 | $ 87 |
| Increase in warranty accrual | 273 | 287 |
| Claims satisfied | (192) | (262) |
| Balanced at ending of period, Accrued warranty | $ 193 | $ 112 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of decrease in the standard and extended product warranty accrual from payments made in cash or in kind to satisfy claims under the terms of the standard and extended product warranty. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of increase in the standard and extended product warranty accrual from warranties issued. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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