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Revenue Recognition (Tables) | 9 Months Ended
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Sep. 30, 2019
Revenue Recognition And Deferred Revenue [Abstract] |
Schedule of Changes in Unearned Revenue | Changes in unearned revenue were as follows:
Nine Months Ended September 30, 2019 |  |  |  |
Balance, beginning of period |  | $ | 1,597 |
Additions to unearned revenue |  |  | 549 |
Reclassified to revenue |  |  | (1,211 | )
Reclassified to held for sale |  |  | (168 | )
Currency impacts |  |  | (20 | )
Balance, end of period |  | $ | 747 |

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