Stock Compensation Plans, Summary Information about Stock Option Plans (Details) - 2002 Stock Option Plan [Member] - $2.45 - $4.40 [Member]	9 Months Ended
	Sep. 30, 2015 $ / shares shares
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) | shares	185,150
Weighted average contractual periods	5 years 10 months 10 days
Weighted average exercise price (in dollars per share)	$ 3.79
Options exercisable (in shares) | shares	184,150