Note 8 - Discontinued Operations (Detail) - Discontinued Oil and Gas Operations, Revenues and Net Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Revenues and other:
Oil and gas operations		$ 10,178
Oil and gas processing and handling income		1,231
Total revenues from discontinued operations		11,409
Income (loss) from discontinued operations before taxes	$ (467)	$ 1,878