Accrued Liabilities Long-term liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Accrued Liabilities [Abstract]
Finance Lease, Liability, Noncurrent	$ 601	$ 0
Liabilities for contracts	438	472
Capital Lease Obligations, Noncurrent	45,166	28,896
Accrued Employee Benefits	1,148	1,131
Accrued Rent	1,460	1,642
Contract with Customer, Liability, Noncurrent	182	94
Other Accrued Liabilities, Noncurrent	1,046	585
OTHER LONG-TERM LIABILITIES	$ 50,041	$ 32,820