Summary of Significant Accounting Policies Noncontrolling Interests (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 31, 2016	Aug. 31, 2015	Aug. 31, 2016	Aug. 31, 2015
Noncontrolling Interest [Line Items]
Beginning balance			$ 38,397	$ 46,661
Net income (loss)	$ 733	$ (521)	104	(1,154)
Distributions to noncontrolling interests			(2,074)	(2,487)
Ending balance	36,219	45,328	36,219	45,328
Austin Radio Partnership [Member]
Noncontrolling Interest [Line Items]
Beginning balance			47,556	47,883
Net income (loss)			(3,048)	3,208
Distributions to noncontrolling interests			(2,074)	(2,487)
Ending balance	48,530	48,604	48,530	48,604
Digonex [Member]
Noncontrolling Interest [Line Items]
Beginning balance			(9,159)	(1,222)
Net income (loss)			3,152	2,054
Distributions to noncontrolling interests			0	0
Ending balance	$ (12,311)	$ (3,276)	$ (12,311)	$ (3,276)