Investments - Schedule of Investments (Details) $ in Thousands	9 Months Ended
Sep. 30, 2020 USD ($)
Equity Method Investment Balances [Roll Forward]
Investment in joint ventures at beginning of the period	$ 57,936
Earnings from joint ventures	2,612
Distribution	(7,200)
Foreign currency translation adjustment	325
Investment in joint ventures at end of the period	53,673
WMES
Equity Method Investment Balances [Roll Forward]
Investment in joint ventures at beginning of the period	44,134
Earnings from joint ventures	1,981
Distribution	(7,200)
Foreign currency translation adjustment	0
Investment in joint ventures at end of the period	38,915
CASC Willis
Equity Method Investment Balances [Roll Forward]
Investment in joint ventures at beginning of the period	13,802
Earnings from joint ventures	631
Distribution	0
Foreign currency translation adjustment	325
Investment in joint ventures at end of the period	$ 14,758

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Amount of distribution received from equity method investee for return of investment, classified as investing activities. Excludes distribution for return on investment, classified as operating activities.

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