Note 7 - Earnings Per Share (Detail) - Percentage of Net Earnings Allocable to Common Shareholders	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Numerator:
Weighted average participating common shares	31,872,617	31,766,753
Add: Weighted average shares of Convertible Preferred Stock	255,000	255,000
Weighted average participating shares	32,127,617	32,021,753
Portion allocable to common shareholders	99.20%	99.20%