Summary of Significant Accounting Policies and Recent Accounting Standards - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2019
Summary of Significant Accounting Policies [Line Items]
Cash restricted for letter of credit	$ 153	$ 153
Money market account as security	51
Asset Impairment Charges	7,268	69
Goodwill impairment	7,268	69
Restricted cash	204	204
Operating lease liability	675		$ 1,280
Right-of-use assets	$ 630		$ 1,213
Deferred rent		$ 67