Stockholders' Equity - Summary of Stock-based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total stock-based compensation expense	$ 8,352	$ 7,668	$ 7,740
Instructional costs and services
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total stock-based compensation expense	770	808	895
Selling and promotional
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total stock-based compensation expense	759	562	490
General and administrative
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total stock-based compensation expense	$ 6,823	$ 6,298	$ 6,355