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Note H - Stock-Based Compensation (Detail) - Stock-Based Compensation (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Allocated share based compensation	$ 162,000	$ 1,059,000	$ 372,000	$ 1,696,000
Tax benefit of stock-based compensation expense	(57,000)	(355,000)	(129,000)	(550,000)
After-tax effect of stock-based compensation	105,000	704,000	243,000	1,146,000
Stock Options and Restricted Stock Units [Member]
Allocated share based compensation	147,000	1,042,000	341,000	1,659,000
Deferred Directors Fees [Member]
Allocated share based compensation	$ 15,000	$ 17,000	$ 31,000	$ 37,000

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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