Shareholders' Equity and Capital Stock - o/s RSUs (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2019 |
Dec. 31, 2018 |
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| RSUs | ||
| Number of unvested units | 946,443 | 955,496 |
| Remaining life (years) | 1 year 1 month 10 days | |
| Aggregate Intrinsic Value | $ 766 | |
| August 22. 2018 | ||
| RSUs | ||
| Number of unvested units | 237,210 | |
| Remaining life (years) | 1 year 4 months 24 days | |
| Aggregate Intrinsic Value | $ 192 | |
| December 14, 2018 | ||
| RSUs | ||
| Number of unvested units | 227,777 | |
| Remaining life (years) | 1 year 8 months 16 days | |
| Aggregate Intrinsic Value | $ 184 | |
| December 15, 2017 | ||
| RSUs | ||
| Number of unvested units | 481,456 | |
| Remaining life (years) | 8 months 16 days | |
| Aggregate Intrinsic Value | $ 390 |
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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