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Investments - Schedule of Investments (Details) $ in Thousands | 6 Months Ended
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Jun. 30, 2020 USD ($)
Equity Method Investment Balances [Roll Forward] |
Investment in joint ventures at beginning of the period | $ 57,936
Earnings from joint ventures | 1,155
Foreign currency translation adjustment | (226)
Investment in joint ventures at end of the period | 58,865
WMES |
Equity Method Investment Balances [Roll Forward] |
Investment in joint ventures at beginning of the period | 44,134
Earnings from joint ventures | 920
Foreign currency translation adjustment | 0
Investment in joint ventures at end of the period | 45,054
CASC Willis |
Equity Method Investment Balances [Roll Forward] |
Investment in joint ventures at beginning of the period | 13,802
Earnings from joint ventures | 235
Foreign currency translation adjustment | (226)
Investment in joint ventures at end of the period | $ 13,811

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