Net Income (Loss) Per Share (Tables)

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares [Table Text Block]

Actual weighted-average Common Shares outstanding used in calculating basic and diluted net income per share were as follows:

	Three months ended				Six months ended
	June 30,				June 30,
	2013		2012		2013		2012
Basic weighted-average shares outstanding		26,691,895		26,424,331		26,649,005		26,322,277
Effect of dilutive shares		656,444		-		709,435		676,225
Diluted weighted-average shares outstanding		27,348,339		26,424,331		27,358,440		26,998,502