Lease Obligations - Reconciliation of Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2019 remaining	$ 570
2020	2,696
2021	2,585
2022	2,576
2023	2,458
2024	2,158
Thereafter	97,187
Total	110,230
Lease liabilities	43,100
Undiscounted excess amount	67,130
Finance Lease, Liability, Payment, Due [Abstract]
2019 remaining	435
2020	1,744
2021	1,751
2022	1,759
2023	23,037
Total	28,726
Finance lease obligations	21,828	$ 21,900
Undiscounted excess amount	$ 6,898