Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets and Goodwill - Additional Information (Detail)

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Intangible Assets and Goodwill - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]          
Goodwill impairment loss         $ 0
Intangible assets and goodwill impairment         0
Goodwill $ 2,926,000   $ 2,926,000   $ 2,926,000
Amortization expense $ 0 $ 0 $ 0 $ 0