Property and Equipment, Net - Depreciation Expense Table (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Depreciation Expense [Line Items]
Depreciation expense	$ 29,020	$ 24,870	$ 22,230
Continuing Operations [Member]
Depreciation Expense [Line Items]
Depreciation expense	29,020	24,870	22,230
Cost of Sales [Member] | Continuing Operations [Member]
Depreciation Expense [Line Items]
Depreciation expense	27,920	23,700	20,890
Selling, General and Administrative Expenses [Member] | Continuing Operations [Member]
Depreciation Expense [Line Items]
Depreciation expense	$ 1,100	$ 1,170	$ 1,340