Acquisitions and Dispositions - Schedule Of Disposal Groups Including Discontinued Operations (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended	12 Months Ended
	Apr. 30, 2018	Nov. 30, 2016	May 31, 2018	Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2017
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Station operating expenses excluding depreciation and amortization				$ 91,033	$ 119,758	$ 180,085
Depreciation and amortization				3,213	3,628	4,806
Impairment loss on intangible assets				343	265	9,843
Gain on sale of radio and publishing assets, net of disposition costs				(31,817)	(76,604)	(23,557)
Loss on sale of fixed assets				(57)	69	(124)
Operating income (loss)				40,989	90,797	31,908
Interest expense				8,103	15,143	18,018
Other (expense) income, net				139	35	(160)
St Louis
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net revenues				711	24,238	23,851
Station operating expenses excluding depreciation and amortization				505	20,071	18,464
Depreciation and amortization					558	502
Impairment loss on intangible assets						1,293
Gain on sale of radio and publishing assets, net of disposition costs	$ (32,100)			(32,148)
Loss on sale of fixed assets						123
Operating income (loss)				32,354	3,609	3,469
Interest expense				592	3,379	2,910
Income (loss) before income taxes				31,762	230	559
KPWR-FM
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net revenues					7,819	24,379
Station operating expenses excluding depreciation and amortization					6,651	16,933
Depreciation and amortization					63	401
Gain on sale of radio and publishing assets, net of disposition costs					(76,745)
Operating income (loss)					77,850	7,045
Interest expense					2,479	5,223
Income (loss) before income taxes					75,371	1,822
Hour Magazines
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net revenues						29,112
Station operating expenses excluding depreciation and amortization				35	172	31,076
Depreciation and amortization						122
Gain on sale of radio and publishing assets, net of disposition costs			$ (200)	331	141	(2,677)
Operating income (loss)				(366)	(313)	591
Interest expense						179
Income (loss) before income taxes				$ (366)	(313)	412
Terre Haute Cluster
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net revenues					(6)	2,298
Station operating expenses excluding depreciation and amortization					24	2,258
Depreciation and amortization						117
Impairment loss on intangible assets						79
Gain on sale of radio and publishing assets, net of disposition costs						(3,478)
Operating income (loss)					(30)	3,322
Interest expense						307
Income (loss) before income taxes					(30)	3,015
Texas Monthly
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net revenues					(2)	14,685
Station operating expenses excluding depreciation and amortization					(78)	14,465
Depreciation and amortization						84
Gain on sale of radio and publishing assets, net of disposition costs		$ (17,400)				(17,402)
Operating income (loss)					76	17,538
Interest expense						1,067
Other (expense) income, net						(37)
Income (loss) before income taxes					$ 76	$ 16,508