Stock Compensation Plans, Summary Information about Stock Option Plans (Details) - Jun. 30, 2015 - 2002 Stock Option Plan [Member] - $ / shares	Total
Summary information about stock options outstanding [Abstract]
Range of exercise price, lower range limit (in dollars per share)	$ 2.45
Range of exercise price, upper range limit (in dollars per share)	$ 4.40
Options outstanding (in shares)	187,217
Weighted average contractual periods	6 years 1 month 10 days
Weighted average exercise price (in dollars per share)	$ 3.79
Options exercisable (in shares)	177,017