Note 9 - Shares Authorized, Available for Future Grant and Outstanding Under Each Plan (Details) - shares	Jun. 30, 2015
2014 Directors Plan [Member]
Authorized (in shares)	350,000
Available (in shares)	333,439
Outstanding (in shares)
2005 Plan [Member]
Authorized (in shares)	2,075,000
Available (in shares)	400,318
Outstanding (in shares)	1,419,716
2004 Directors Plan [Member]
Authorized (in shares)
Available (in shares)	0
Outstanding (in shares)	12,000
Authorized (in shares)	2,425,000
Available (in shares)	733,757
Outstanding (in shares)	1,431,716