Segment Information - Revenues and Long-lived Assets by Geographic Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 469,240	$ 356,976	$ 330,984	$ 332,393	$ 405,588	$ 344,141	$ 322,432	$ 299,893	$ 1,489,593	$ 1,372,054	$ 1,207,295
Long-lived assets	972,198				778,507				972,198	778,507
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									1,215,281	1,100,298	924,051
Long-lived assets	918,125				701,580				918,125	701,580
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									70,073	67,518	73,742
Ireland
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									55,917	59,009	69,291
All other countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									148,322	145,229	$ 140,211
Long-lived assets	$ 54,073				$ 76,927				$ 54,073	$ 76,927