Note E - Investment in Marketable Securities - Related Party (Detail) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended	24 Months Ended
	Dec. 31, 2011	Dec. 31, 2011	Jun. 30, 2012
Investments in and Advances to Affiliates, Balance, Shares (in Shares)	537,078	537,078
Minimum [Member] | VRMI II [Member]
Closing Price per Share			$ 1.10
Maximum [Member] | VRMI II [Member]
Closing Price per Share			$ 1.73
VRMI II [Member]
Investments in and Advances to Affiliates, Balance, Shares (in Shares)	537,078	537,078	537,078
Closing Price per Share	$ 1.17	$ 1.17	$ 1.14
Marketable Securities, Realized Gain (Loss) (in Dollars)		$ 0.2
Other than Temporary Impairment Losses, Investments (in Dollars)	$ 0.2