7. Earnings (Loss) Per Share (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Notes to Financial Statements
Weighted average number of common shares outstanding during the period used to compute basic earnings (loss) per share	19,495	19,821	19,406	18,794
Incremental common shares attributable to exercise of outstanding options and warrants	6,200	0	4,620	0
Weighted average number of common shares used to compute diluted earnings (loss) per share	25,695	19,821	24,026	18,794