Note 2 - Summary of Significant Accounting Policies - Weighted Average Common Shares (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Weighted average common shares outstanding - basic (in shares)	10,473,928	10,440,803	10,470,410	10,424,001
Potentially dilutive securities:
Unvested shares of restricted stock (in shares)	24,983	37,011	21,907	37,074
Weighted average common shares and common share equivalents outstanding - diluted (in shares)	10,498,911	10,477,814	10,492,317	10,461,075
Average number of potentially dilutive securities excluded from calculation (in shares)				4,505