Revenue - Transaction Price Allocation and Contract Balances (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2019 |
Dec. 31, 2018 |
|
| Revenue | ||
| Original expected duration | true | |
| Receivables from contracts with customers | $ 365 | $ 475 |
| X | ||||||||||
- Definition Amount due from contracts with customers. No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Indicates (true false) whether optional exemption was applied not to disclose amount of transaction price allocated to and explanation of expected timing of revenue recognition for remaining performance obligation, when contract has expected duration of one year or less or right to consideration corresponds directly to performance completed. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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