Subsequent Events - Results of operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Subsequent Event [Line Items]
Sales Revenue, Services, Net	$ 148,487	$ 214,568	$ 231,433
Station Operating Expenses Excluding Depreciation And Amortization	119,758	180,085	183,394
Depreciation and amortization	3,628	4,806	5,797
Impairment loss on intangible assets	265	9,843	9,499
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	(69)	124	56
OPERATING INCOME	90,797	31,908	19,664
Interest expense	15,143	18,018	18,956
Income (loss) before income taxes	73,027	13,110	1,765
St Louis
Subsequent Event [Line Items]
Sales Revenue, Services, Net	24,238	23,851	21,297
Station Operating Expenses Excluding Depreciation And Amortization	20,071	18,464	17,960
Depreciation and amortization	558	502	502
Impairment loss on intangible assets	0	1,293	1,677
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	0	123	(1)
OPERATING INCOME	3,609	3,469	1,159
Interest expense	3,379	2,910	2,842
Income (loss) before income taxes	$ 230	$ 559	$ (1,683)