Quarterly report pursuant to Section 13 or 15(d)

Marketable Securities - Summary of Company's Investment Securities (Detail)

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Marketable Securities - Summary of Company's Investment Securities (Detail) - BRIDGE INVESTMENT GROUP HOLDINGS LLC [Member] - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Marketable Securities [Line Items]    
Cost $ 5,068 $ 5,014
Unrealized Gains 81 39
Unrealized Losses (16)  
Fair Value 5,133 5,053
Exchange Traded Funds [Member]    
Marketable Securities [Line Items]    
Cost 715 713
Unrealized Gains 21 23
Fair Value 736 736
Mutual Fund [Member]    
Marketable Securities [Line Items]    
Cost 4,353 4,301
Unrealized Gains 60 16
Unrealized Losses (16)  
Fair Value $ 4,397 $ 4,317