Note 6 - Earnings per Share (Detail)	6 Months Ended	3 Months Ended	6 Months Ended
Jun. 30, 2012 Stock Options [Member]	Jun. 30, 2011 Stock Options [Member]	Jun. 30, 2012 Convertible Preferred Stock [Member]	Jun. 30, 2011 Convertible Preferred Stock [Member]	Jun. 30, 2012 Convertible Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,282,271	1,394,379	2,623,329	2,623,329	2,623,329

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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+ Details