Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Additional Information (Details)

v3.20.4
Fair Value Measurements - Additional Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Fair Value Disclosures [Abstract]    
Fair value, assets, level 1 to level 2 transfers $ 0 $ 0
Fair value, assets, level 2 to level 1 transfers 0 0
Fair value, assets, transfers into level 3 0 0
Fair value, assets, transfers out of level 3 $ 0 $ 0