Leases - Schedule of Operating and Finance Lease Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Assets:
Operating lease assets	$ 16,222	$ 0
Finance lease assets	554
Total leased assets	16,776
Liabilities:
Operating lease liabilities	17,109	$ 0
Finance lease liabilities	685
Total leased liabilities	17,794
Finance lease, net of accumulated amortization	$ 662