Note N - Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Effective Income Tax Rate	12.50%	38.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	34.00%
Unrecognized Tax Benefits (in Dollars)	$ 42		$ 42