Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Allowance for Credit Losses on Financing Receivables [Table Text Block]

	(in thousands) Year Ended December 31,
	2012				2011
Balance at beginning of year		$	420			$	444
Amounts charged to expense			153				59
Uncollectible accounts written off, net of recovery			(155	)			(83	)
Balance at end of year		$	418			$	420

Schedule of Change in Accounting Estimate [Table Text Block]

	(in thousands, except per share data)
	Pre-tax Basis			Net of Tax			Per Share Effect
December 31, 2012		$	2,257		$	1,392		$	0.13
December 31, 2011			1,590			981			0.10

Capitalized Interest and Interest Expense [Table Text Block]

	(in thousands)
	Capitalized Interest		Interest Expense
December 31, 2012	$	--	$	4,052
December 31, 2011		43		3,345