Exercise prices on options outstanding at (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Range of Exercise Prices and options outstanding
Range of Exercise Prices $2.70 - $9.99	15,028	17,158
Range of Exercise Prices $10.00 - $14.99	83,116	111,410
Range of Exercise Prices $15.00 - $19.99	23,620	24,620
Range of Exercise Prices $20.00 - $24.99	2,000	12,800
Range of Exercise Prices $25.00 - $29.99	2,000	2,500
Range of Exercise Prices $30.00 - $30.55	5,400	5,400
Total Options oustanding	131,164	173,888