v3.26.1
Stock-Based Compensation - Restricted Stock Units (Detail) - Restricted Stock Units (RSUs) [Member]
3 Months Ended
Jun. 30, 2026
$ / shares
shares
2007 Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unvested Shares, Beginning Balance | shares 33,275
Vested, Shares | shares (11,125)
Unvested Shares, Ending Balance | shares 22,150
Unvested, Weighted-Average Grant-Date Fair Value, Beginning Balance | $ / shares $ 13.14
Vested, Weighted-Average Grant-Date Fair Value | $ / shares 12.8
Unvested, Weighted-Average Grant-Date Fair Value, Ending Balance | $ / shares $ 13.31
2025 Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unvested Shares, Beginning Balance | shares 42,583
Vested, Shares | shares (3,583)
Unvested Shares, Ending Balance | shares 39,000
Unvested, Weighted-Average Grant-Date Fair Value, Beginning Balance | $ / shares $ 4.39
Vested, Weighted-Average Grant-Date Fair Value | $ / shares 4.05
Unvested, Weighted-Average Grant-Date Fair Value, Ending Balance | $ / shares $ 4.42