Leases - Schedule of Operating Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Operating Leases
Operating lease right-of-use assets	$ 17,216	$ 0
Operating lease liabilities	5,802	0
Long-term operating lease liabilities	12,235	$ 0
Total operating lease liabilities	$ 18,037