Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Additional Information (Detail)

v3.19.3
Fair Value Measurements - Additional Information (Detail)
9 Months Ended
Sep. 30, 2019
USD ($)
Fair Value Disclosures [Abstract]  
Fair value of assets transfers in or out, level 1 to level 2 $ 0
Fair value of assets transfers in or out, level 2 to level 1 0
Fair value, asset transfers into Level 3 0
Fair value, asset transfers out of Level 3 $ 0