Schedule II Valuation and Qualifying Accounts - Schedule of Valuation and Qualifying Accounts (Details) - Allowance for receivables - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 10,699	$ 13,175	$ 11,106
Additions/ (reductions)	12,714	18,824	15,734
Write-offs	(10,401)	(21,300)	(13,665)
Balance at end of period	13,012	10,699	13,175
American Public Education Segment
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	8,461	11,452	11,106
Additions/ (reductions)	11,203	17,480	14,011
Write-offs	(9,378)	(20,471)	(13,665)
Balance at end of period	10,286	8,461	11,452
Hondros College of Nursing Segment
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	2,238	1,723	0
Additions/ (reductions)	1,511	1,344	1,723
Write-offs	(1,023)	(829)	0
Balance at end of period	$ 2,726	$ 2,238	$ 1,723