Leases - Cash Flow Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash paid related to lease liabilities
Operating cash payments for operating leases	$ 10,504
Investing cash payments for operating leases	19,763
Financing cash payments for financing leases	623	$ 0
Right of use assets obtained in exchange for lease obligations entered into during the period
Operating leases	57,637
Financing leases	$ 597