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Stock-Based Compensation and Employee Stock Purchase Program - Additional Information (Detail)
 3 Months Ended
Jun. 25, 2024
shares
Feb. 02, 2022
shares
May 20, 2015
shares
May 14, 2015
Mar. 31, 2025
USD ($)
IncentivePlan
shares
Mar. 31, 2024
USD ($)
Dec. 31, 2024
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of equity incentive plans | IncentivePlan         2    
Total number of options outstanding         191,511   205,475
Unrecognized compensation cost related to unvested stock-based compensation grants | $         $ 251,000    
Weighted-average remaining recognition period         1 year    
Stock-based compensation | $         $ 78,000 $ 138,000  
2015 Employee Stock Purchase Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Total number of shares reserved for issuance under plan         1,108    
Stock-based compensation | $         $ 3,000 $ 2,000  
Percentage in payroll deductions to acquire shares of common stock       15.00%      
Purchase plan offering period       6 months      
Employees are able to purchase company's common stock on first trading day of offering period, percentage       85.00%      
Issuance of common stock pursuant to employee stock purchase plan         10,171    
First offering period, start date       May 14, 2015      
First offering period, end date       Feb. 01, 2016      
Inducement Stock Option [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Total number of options outstanding         199   199
Inducement Stock Option [Member] | Stanley Jacot, Jr. [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Shares Subject to Outstanding, Options granted   7,902          
2015 Omnibus Equity Incentive Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Terms under the plan         The 2015 Plan became effective upon the Company’s IPO in May 2015 and all shares that were reserved, but not issued, under the 2006 Plan were assumed by the 2015 Plan. Upon effectiveness, the 2015 Plan had 3,860 shares of common stock reserved for future issuance, which included 259 that were transferred to and assumed by the 2015 Plan. The 2015 Plan provides for automatic annual increases in shares available for grant. In addition, shares subject to awards under the 2006 Plan that are forfeited or canceled will be added to the 2015 Plan.    
Total number of shares reserved for issuance under plan     3,860   338,341    
Number of shares awarded o individual employee 50,000   9,375        
Options vesting period     4 years        
Additional shares authorized for issuance under the plan 200,000            
Common stock available for future grant         147,038    
Total number of options outstanding         191,303   205,236
2015 Omnibus Equity Incentive Plan [Member] | Maximum [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Options exercisable period     10 years        
2006 Stock Incentive Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Total number of shares reserved for issuance under plan     259        
Total number of options outstanding         9   40