Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Restricted cash	$ 1,600		$ 1,300
Impairment of goodwill	$ 0	$ 5,855
Options previously granted vesting period	3 years
Award accelerated service period	1 year
Stock-based compensation expense in operating income	$ 1,750	1,689
Hondros College of Nursing Segment
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Fair value of goodwill		28,000
Impairment of goodwill		5,900
Operating Expenses | Incentive-Based Compensation Plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense in operating income	$ 1,300	$ 600