Note 7 - Stockholders' Equity (Tables)
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6 Months Ended |
Jun. 30, 2026 |
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| Equity [Abstract] |
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| Schedule of Capital Reserved for Future Issuance [Table Text Block] |
Common stock reserved for future issuance consists of the following as of June 30, 2026:
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Stock options outstanding under 2019 Equity Incentive Plan |
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479,018 |
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Restricted stock units outstanding under 2019 Equity Incentive Plan |
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340,950 |
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Performance stock units outstanding under 2019 Equity Incentive Plan, at target |
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550,465 |
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Shares authorized for future issuance under 2019 Equity Incentive Plan |
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4,646,787 |
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Shares authorized for future issuance under 2019 Employee Stock Purchase Plan |
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1,814,096 |
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Total |
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7,831,316 |
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| Share-Based Payment Arrangement, Cost by Plan [Table Text Block] |
The following table summarizes the Company’s stock-based compensation expense for each period presented:
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Three Months Ended June 30, |
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Six Months Ended June 30, |
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2026 |
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2025 |
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2026 |
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2025 |
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($ in thousands) |
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($ in thousands) |
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Stock-based compensation |
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$ |
7,438 |
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$ |
5,347 |
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$ |
16,224 |
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$ |
10,092 |
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| Share-Based Payment Arrangement, Activity [Table Text Block] |
The following table summarizes stock option transactions for the six months ended June 30, 2026:
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Number of shares |
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Weighted-average exercise price |
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Weighted-average remaining contractual term (in years) |
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Aggregate intrinsic value ($ in thousands) |
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Outstanding at January 1, 2026 |
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499,676 |
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$ |
32.15 |
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3.9 |
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$ |
51,273 |
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Options granted |
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— |
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— |
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Options exercised |
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(20,167 |
) |
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24.06 |
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Options cancelled |
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(491 |
) |
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61.72 |
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Outstanding at June 30, 2026 |
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479,018 |
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$ |
32.46 |
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3.3 |
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$ |
44,995 |
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Vested and Exercisable at June 30, 2026 |
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479,018 |
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$ |
32.46 |
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3.3 |
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$ |
44,995 |
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| Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
The following table summarizes RSU transactions for the six months ended June 30, 2026:
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Number of shares |
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Weighted-average grant date fair value |
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Outstanding at January 1, 2026 |
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296,285 |
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$ |
89.73 |
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Granted |
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184,609 |
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120.30 |
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Released |
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(130,338 |
) |
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79.77 |
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Forfeited |
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(9,606 |
) |
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106.51 |
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Non-vested outstanding at June 30, 2026 |
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340,950 |
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$ |
109.62 |
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| Schedule of Nonvested Performance-Based Units Activity [Table Text Block] |
The following table summarizes PSU transactions for the six months ended June 30, 2026:
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Number of shares |
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Weighted-average grant date fair value |
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Outstanding at January 1, 2026 |
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502,022 |
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$ |
49.05 |
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Granted |
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120,375 |
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105.64 |
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Vested |
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(67,883 |
) |
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51.24 |
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Forfeited |
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(4,049 |
) |
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102.10 |
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Non-vested outstanding at June 30, 2026 |
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550,465 |
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$ |
60.77 |
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| Schedule Of Key Valuation Input Assumptions Used In The Monte Carlo Simulation Relative To Awards Granted [Table Text Block] |
These PSUs were valued using a Monte Carlo simulation with key valuation assumptions as follows:
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2026 Awards |
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2025 Awards |
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Term |
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2.9 years |
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2.9 years |
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Risk-free interest rate(1) |
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3.62 |
% |
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4.22 |
% |
Volatility(2) |
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38.72 |
% |
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45.00 |
% |
Weighted average fair value(3) |
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$ |
125.79 |
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$ |
116.50 |
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