Annual report pursuant to Section 13 and 15(d)

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

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Marketable Securities - Summary of Company's Investment Securities (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Marketable Securities [Line Items]    
Cost $ 8,032 $ 5,014
Unrealized Gains 34 39
Unrealized Losses (31) 0
Fair Value 8,035 5,053
Exchange Traded Funds [Member]    
Marketable Securities [Line Items]    
Cost 1,159 713
Unrealized Gains 16 23
Unrealized Losses (4) 0
Fair Value 1,171 736
Mutual Fund [Member]    
Marketable Securities [Line Items]    
Cost 6,873  
Unrealized Gains 18  
Unrealized Losses (27)  
Fair Value $ 6,864  
Mutual Fund [Member] | BRIDGE INVESTMENT GROUP HOLDINGS LLC [Member]    
Marketable Securities [Line Items]    
Cost   4,301
Unrealized Gains   16
Unrealized Losses   0
Fair Value   $ 4,317