Goodwill - Schedule of Goodwill (Details) - USD ($) $ in Thousands		12 Months Ended
	Nov. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Line Items]
Goodwill, begining balance		$ 147,312	$ 146,000
Goodwill, acquired during period			1,312
Impairment expense	$ (3,600)	(3,626)
Sale of Peterson's		(4,927)
Goodwill, ending balance		138,759	147,312
Student Loan and Guaranty Servicing [Member]
Goodwill [Line Items]
Goodwill, begining balance		8,596	8,596
Goodwill, acquired during period			0
Impairment expense		0
Sale of Peterson's		0
Goodwill, ending balance		8,596	8,596
Tuition Payment Processing and Campus Commerce [Member]
Goodwill [Line Items]
Goodwill, begining balance		67,168	67,168
Goodwill, acquired during period			0
Impairment expense		0
Sale of Peterson's		0
Goodwill, ending balance		67,168	67,168
Communications [Member]
Goodwill [Line Items]
Goodwill, begining balance		21,112	19,800
Goodwill, acquired during period			1,312
Impairment expense		0
Sale of Peterson's		0
Goodwill, ending balance		21,112	21,112
Asset Generation and Management [Member]
Goodwill [Line Items]
Goodwill, begining balance		41,883	41,883
Goodwill, acquired during period			0
Impairment expense		0
Sale of Peterson's		0
Goodwill, ending balance		41,883	41,883
Corporate and Other Activities [Member]
Goodwill [Line Items]
Goodwill, begining balance		8,553	8,553
Goodwill, acquired during period			0
Impairment expense		(3,626)
Sale of Peterson's		(4,927)
Goodwill, ending balance		$ 0	$ 8,553