Property and Equipment, Net - Depreciation Expense Table (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Depreciation Expense [Line Items]
Depreciation expense			$ 19,950	$ 18,630
Continuing Operations [Member]
Depreciation Expense [Line Items]
Depreciation expense	$ 6,880	$ 5,760	19,950	18,630
Cost of Sales [Member] | Continuing Operations [Member]
Depreciation Expense [Line Items]
Depreciation expense	6,490	5,490	18,850	17,330
Selling, General and Administrative Expenses [Member] | Continuing Operations [Member]
Depreciation Expense [Line Items]
Depreciation expense	$ 390	$ 270	$ 1,100	$ 1,300