Income Taxes - Summary of income tax provision (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Current Income Tax Expense (Benefit)
Federal	$ (247)	$ (753)
State	(174)	(10)
Total Current Benefit	(421)	(763)
Deferred Income Tax Expense (Benefit)
Federal	789	(2,095)
State	(46)	(2,266)
Total Deferred Expense (Benefit)	743	(4,361)
Income Tax Expense (Benefit)	$ 322	$ (5,124)