7. Earnings Per Share (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share Details
Weighted average common shares - basic	21,795	19,495	20,959	19,406
Incremental common shares attibutable to exercise of outstanding options and warrants	9,422	6,200	10,591	4,620
Weighted average common shares - diluted	31,217	25,695	31,550	24,026