Right-of-Use Asset and Lease Liabilities - Balance Sheet Classification of Lease Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019
ASSETS
Operating lease assets	$ 156,741	$ 123,500
Finance lease assets	14,770
Total leased assets	171,511
Current liabilities:
Operating	27,156
Finance	6,924
Noncurrent liabilities
Operating	139,200
Finance	8,746
Total lease liabilities	182,026
Operating lease accumulated amortization	23,200
Finance lease accumulated depreciation	$ 6,000