Leases - Shcedule of Supplemental Balance Sheet Information Related to Finance and Operating Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 02, 2019	Dec. 31, 2018
Leases [Abstract]
Finance lease right-of-use assets included within property and equipment, net	$ 2,280
Current finance lease liabilities included within other current liabilities	447
Non-current finance lease liabilities included within other long-term liabilities	1,315
Total	1,762
Current operating lease liabilities included within other current liabilities	1,818
Operating lease liabilities - non current	3,833	$ 3,948
Total	$ 5,651