v3.8.0.1
Lease Incentives - Schedule of Lease Incentives (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Leases [Abstract]    
Current portion $ 1,484 $ 1,311
Long term portion 14,970 12,628
Total lease incentives $ 16,454 $ 13,939