Note 1 - Description of Business and Summary of Significant Accounting Policies (Detail) (USD $)	12 Months Ended									3 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Automotive [Member]	Dec. 31, 2012 Medical [Member]	Dec. 31, 2012 Restaurant [Member]	Mar. 22, 2011 Uninsured Risk [Member]	Jun. 30, 2012 Ownership Percentage Common Stock [Member] Tarzian Inc [Member]	Jun. 30, 2012 Dividends Liquidation Dissolution [Member] Tarzian Inc [Member]	Dec. 31, 2011 Property, Liability and Casualty Insurance Segment [Member]	Dec. 31, 2012 Property, Liability and Casualty Insurance Segment [Member]	Dec. 31, 2011 Property, Liability and Casualty Insurance Segment [Member]	Dec. 31, 2012 Maximum [Member]
Advertising Expense	$ 900,000	$ 800,000	$ 800,000
Minimum Percentage of Receivable Balances for creating Allowance for Doubtful Accounts	85.00%
Period for Creating Allowance for Doubtful Accounts	120
Provision for Doubtful Accounts	100,000	1,900,000	700,000
Supplemental Information for Property, Casualty Insurance Underwriters, Discount Deducted from Reserves							50,000
Proceeds from Insurance Settlement, Investing Activities											800,000	3,200,000
Gain (Loss) on Disposition of Property											800,000	3,000,000
Payments to Acquire Property, Plant, and Equipment	24,523,000	24,274,000	19,395,000								400,000	3,900,000
Proceeds from Insurance Settlement, Operating Activities										450,000
Asset Retirement Obligation	505,000	465,000
Asset Retirement Obligation, Accretion Expense	$ 25,000	$ 5,000	$ 28,000
Entity-Wide Revenue, Major Customer, Percentage				18.00%	8.00%	7.00%							5.00%
Cost Method Ownership Percentage								32.40%	67.90%