Share Based Payments Stock-Based Compensation Expense and Related Tax Benefits Recognized (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 2,813	$ 4,884	$ 2,942
Tax benefit	0	1,954	0
Recognized stock-based compensation expense, net of tax	2,813	2,930	2,942
Station operating expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	720	2,236	852
Corporate expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 2,093	$ 2,648	$ 2,090