Valuation and Qualifying Accounts - Schedule of Valuation and Qualifying Accounts (Details) - Allowance for Doubtful Accounts Receivable [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year		$ 5,907	$ 5,918
Charged to Expense		8,669	18,478
Deductions		$ (14,576)	(18,489)
Balance at End of Year			$ 5,907
Grand Canyon University
Valuation and Qualifying Accounts Disclosure [Line Items]
Deductions	$ 6,093