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Stock-Based Compensation Expense and Related Tax Benefits Recognized (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	May 31, 2013	May 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 663	$ 389
Tax benefit
Recognized stock-based compensation expense, net of tax	663	389
Station operating expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	253	151
Corporate expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 410	$ 238

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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