Fair Value Measurements - Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 11, 2019	Dec. 31, 2018	Mar. 23, 2018	Dec. 31, 2017
Goodwill	$ 195,919		$ 153,397		$ 107,187
Washington Refinery Acquisition
Net working capital		$ (35,854)
Property, plant and equipment		412,766
Operating lease assets		62,337
Goodwill		42,522
Long-term operating lease liabilities		(40,766)
Deferred tax liability		(92,103)
Other non-current liabilities		(804)
Total		$ 326,527
Operating lease, discount rate		9.60%
Northwest Retail
Net working capital				$ 3,822
Property, plant and equipment				30,230
Goodwill				46,210
Long-term capital lease obligations				(5,244)
Other non-current liabilities				(487)
Total				$ 74,531