Leases - Schedule of Cash Flow and Other Information (Details)	3 Months Ended
	Mar. 31, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows used for operating leases	$ 4,000,000
Operating cash flows used for finance leases	0
Financing cash flows used for finance leases	0
Right-of-use assets obtained in exchange for new lease obligations:
Operating leases	4
Finance leases	$ 33
Weighted-average remaining lease term
Operating Leases	7 years
Finance Leases	12 years
Weighted-average discount rate
Operating leases	4.10%
Finance leases	4.90%