Revenue from Contracts with Customers - Summary of Accounts And Notes Receivable And Contract Assets and Liabilities (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Revenue from Contract with Customer [Abstract] | |||
| Contract Liabilities - current | $ 4,081 | $ 1,581 | |
| Contract Liabilities - noncurrent | 2,441 | 1,568 | |
| Total contract liabilities | $ 6,522 | $ 6,522 | $ 3,149 |
| Change in Contract with Customer, Liability [Roll Forward] | |||
| Contract Liabilities, beginning balance | (3,149) | ||
| Decrease due to recognition of revenue | 4,879 | ||
| Increase to deferred revenue during current period | (8,252) | ||
| Contract Liabilities, ending balance | $ (6,522) |
| X | ||||||||||
- Definition Change in Contract with Customer, Liability [Roll Forward] No definition available.
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- Definition Contract With Customer, Liability, Increase Due To Deferred Revenue Or Mobilization Costs During Current Period No definition available.
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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