Subsequent Events (Tables)

3 Months Ended

Mar. 31, 2015

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

After taking into effect the stock options granted subsequent to March 31, 2015, the total unrecognized compensation cost related to non-vested stock option-based compensation arrangements granted under the Plan that is expected to be recognized in future years as follows:

2015	$	681,000
2016		592,000
2017		290,000
2018		84,000
2019		18,000
	$	1,665,000

Schedule of Share-based Compensation, Activity [Table Text Block]

Activity under the Plan from January 1 to May 1, 2015 is as follows:

Reserved but unissued shares under the Plan, January 1, 2015			242,764
Increases in the number of authorized shares under the Plan			312,292
Grants of stock options			(405,200)
Stock option forfeitures			77,875
Exercise of stock options			115,000
Stock grants			(4,188)
Reserved but unissued shares under the Plan, May 1, 2015			338,543