Leases - Schedule of Classification of Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
Assets
Operating	$ 4,295
Finance	$ 518
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsNoncurrent
Total lease assets	$ 4,813
Current
Operating	1,276	$ 1,600
Finance	$ 310
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:OtherAccruedLiabilitiesCurrent
Noncurrent
Operating	$ 3,005	$ 3,900
Finance	$ 229
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent
Total lease liabilities	$ 4,820