Accounts Receivable from Customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Accounts Receivable [Line Items]
Accounts receivable from contracts with customers	$ 199,631	$ 162,455
Accrued Income Receivable [Member]
Accounts Receivable [Line Items]
Accounts receivable from contracts with customers	$ 152,100	$ 108,900
Minimum [Member]
Accounts Receivable [Line Items]
Revenue receipt, days after sale	30
Maximum [Member]
Accounts Receivable [Line Items]
Revenue receipt, days after sale	90