Leases - Right-of-use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets
Financing lease assets	$ 8,853	$ 9,718
Operating lease right-of-use assets	7,255	8,678
Total lease assets	16,108	18,396
Liabilities
Financing lease liabilities - current	3,322	3,275
Operating lease liabilities - current	1,462	1,813
Financing lease liabilities - long-term	3,827	4,674
Operating lease liabilities - long-term	5,793	6,866
Total lease liabilities	$ 14,404	$ 16,628