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Stockholders' Equity - Summary of Restricted Stock Award Transactions (Detail) - Restricted Stock [Member] - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted Average Grant Date Fair Value, Granted   $ 10.70
Stock Option Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of Shares, Beginning balance 2,000  
Number of Shares, Granted 0  
Number of Shares, Vested (667)  
Number of Shares, Forfeited (1,000)  
Number of Shares, Ending balance 333  
Weighted Average Grant Date Fair Value, Beginning balance $ 10.68  
Weighted Average Grant Date Fair Value, Granted  
Weighted Average Grant Date Fair Value, Vested 11.05  
Weighted Average Grant Date Fair Value, Forfeited 10.50  
Weighted Average Grant Date Fair Value, Ending balance $ 10.50