Income Taxes - Components of Income Taxes (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
State	$ (816)	$ (389)	$ (204)
Total Current	(816)	(389)	(204)
Deferred:
Income Tax Expense (Benefit), Total	$ (816)	$ (389)	$ (204)