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v3.19.3.a.u2

Investments (Tables) | 12 Months Ended
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Dec. 31, 2019
Investments [Abstract] |
Summary of the change in noncontrolling interest | ​
​ | ​ | ​ | ​ | ​
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Year ended December 31 | ​ | 2017 |
Noncontrolling interest at beginning of period | ​ | $ | 13,762 | ​
Net loss | ​ | ​ | (130) | ​
Foreign currency translation | ​ | ​ | 826 | ​
Comprehensive income | ​ | ​ | 696 | ​
Acquisition of noncontrolling interest | ​ | ​ | (14,458) | ​
Noncontrolling interest at end of period | ​ | $ | - | ​
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