Summary of Significant Accounting Policies Noncontrolling Interests (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2018	Aug. 31, 2017
Noncontrolling Interest [Line Items]
Beginning balance			$ 30,680	$ 32,921
Net Income (Loss) Attributable to Noncontrolling Interest	$ 805	$ 808	1,559	1,647
Distributions to noncontrolling interests			(2,724)	(2,254)
Ending balance	29,515	32,314	29,515	32,314
Austin Radio Partnership [Member]
Noncontrolling Interest [Line Items]
Beginning balance			47,424	46,830
Net Income (Loss) Attributable to Noncontrolling Interest			2,743	(3,151)
Distributions to noncontrolling interests			(2,724)	(2,254)
Ending balance	47,443	47,727	47,443	47,727
Digonex [Member]
Noncontrolling Interest [Line Items]
Beginning balance			(16,744)	(13,909)
Net Income (Loss) Attributable to Noncontrolling Interest			(1,184)	(1,504)
Distributions to noncontrolling interests			0	0
Ending balance	$ (17,928)	$ (15,413)	$ (17,928)	$ (15,413)