Summary of Significant Accounting Policies Noncontrolling Interests (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2017	Nov. 30, 2016	Nov. 30, 2017	Nov. 30, 2016
Noncontrolling Interest [Line Items]
Beginning balance			$ 32,921	$ 38,397
Net income (loss)	$ (711)	$ (581)	(2,358)	(477)
Distributions to noncontrolling interests			(3,556)	(4,263)
Ending balance	31,723	34,611	31,723	34,611
Austin Radio Partnership [Member]
Noncontrolling Interest [Line Items]
Beginning balance			46,830	47,556
Net income (loss)			(4,602)	4,453
Distributions to noncontrolling interests			(3,556)	(4,263)
Ending balance	47,876	47,746	47,876	47,746
Digonex [Member]
Noncontrolling Interest [Line Items]
Beginning balance			(13,909)	(9,159)
Net income (loss)			2,244	3,976
Distributions to noncontrolling interests			0	0
Ending balance	$ (16,153)	$ (13,135)	$ (16,153)	$ (13,135)