Quarterly report pursuant to Section 13 or 15(d)

Recent Transactions - Equity Transactions - Additional Information (Detail)

v3.19.2
Recent Transactions - Equity Transactions - Additional Information (Detail) - USD ($)
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Abstract]    
Business combination acquisition related costs $ 24,000 $ 100,000