Income Taxes - Additional Information (Details) - USD ($)		12 Months Ended
	Jan. 01, 2019	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Line Items]
Deferred tax assets, fully offset by valuation allowance		$ 13,100,000
Net deferred tax assets		13,100,000
Research and development credit carryforward		$ 1,446,000	$ 1,231,000
Cumulative changes in ownership percentage		50.00%
Period for cumulative change in ownership		3 years
Unrecognized Tax Benefits		$ 0	$ 0
Interest and penalties		0
Change in retained earnings	$ 0
Adjustment in deferred tax liability	100,000
Adjustment in deferred tax assets	$ 100,000
Federal
Income Taxes [Line Items]
Net operating loss carryforwards		70,000,000
Operating loss carryforwards non expire portion		$ 44,200,000
Operating loss carryforwards expiration year		2034
Research and development credit carryforward		$ 900,000
Research and development credit carryforward expiration year		2034
State
Income Taxes [Line Items]
Net operating loss carryforwards		$ 48,700,000
Operating loss carryforwards expiration year		2030
Research and development credit carryforward		$ 700,000