Intangible Assets and Goodwill (Narrative) (Details) - USD ($) $ in Thousands |
Oct. 03, 2014 |
Mar. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|---|
| Goodwill And Intangible Assets [Line Items] | |||
| Goodwill | $ 7,134 | $ 6,971 | |
| Kulu Valley Ltd | |||
| Goodwill And Intangible Assets [Line Items] | |||
| Goodwill acquired during period | $ 8,800 | ||
| Intangible assets acquired during the period | $ 6,700 | ||
| Goodwill | $ 7,100 |
| X | ||||||||||
- Definition Goodwill And Intangible Assets [Line Items] No definition available.
|
| X | ||||||||||
- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|