Property and Equipment - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Property Plant And Equipment [Abstract]
Depreciation expense	$ 12,200	$ 10,100
Amortization expense on finance lease assets	918	589
Property and equipment purchased through accounts payable and accrued liabilities, decreased amount	$ 4,600	$ 1,500