Leases - Narrative (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($) campus	May 31, 2019 USD ($)	Jan. 01, 2019 USD ($)
Segment Reporting Information [Line Items]
Lease expense	$ 600,000	$ 1,900,000
Lease term			62 months
Optional lease term renewal			5 years
Minimum rental payments of the initial term of the lease	12,479,000	12,479,000	$ 1,800,000
Right-of-use asset	10,308,000	10,308,000		$ 11,800,000
Additional right-of-use assets recognized	0	0
Present value of operating lease liabilities	$ 600,000	$ 1,800,000
Hondros College of Nursing Segment
Segment Reporting Information [Line Items]
Number of campuses | campus		5