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Note J - Business Segment and Geographic Disclosures (Detail) - Operations by Geographic Area (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Revenues:
Revenues	$ 20,911	$ 19,021	$ 46,123	$ 41,643
Assets	100,068		100,068		112,990
United States [Member]
Revenues:
Revenues	17,966	15,529	40,910	35,147
Assets	87,870		87,870		99,601
Foreign [Member]
Revenues:
Revenues	2,945	3,492	5,213	6,496
Assets	$ 12,198		$ 12,198		$ 13,389

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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