Stock options and awards (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Schedule of options outstanding and granted under stock option plans
Exercisable options	285,000	447,680
Weighted Average Remaining life	2 years 2 months 12 days	2 years 4 months 24 days
Non Plan [Member]
Schedule of options outstanding and granted under stock option plans
Date granted	Mar. 25, 2009	Mar. 25, 2009
Options Outstanding	115,000	115,000
Exercisable options	115,000	115,000
Exercise Price	$ 0.55	$ 0.55
Expiration date	Mar. 24, 2014	Mar. 24, 2014
Weighted Average Remaining life	2 months 12 days	1 year 2 months 12 days
2008 ISO [Member]
Schedule of options outstanding and granted under stock option plans
Date granted		Aug. 25, 2008
Options Outstanding		141,400
Exercisable options		107,680
Exercise Price		$ 0.97
Expiration date		Aug. 21, 2013
Weighted Average Remaining life		8 months 12 days
2002 NQ [Member]
Schedule of options outstanding and granted under stock option plans
Date granted		Jun. 20, 2003
Options Outstanding		30,000
Exercisable options		30,000
Exercise Price		$ 1.03
Expiration date		Jun. 19, 2013
Weighted Average Remaining life		6 months
2002 NQ 1 [Member]
Schedule of options outstanding and granted under stock option plans
Date granted	May 25, 2004	May 25, 2004
Options Outstanding	30,000	30,000
Exercisable options	30,000	30,000
Exercise Price	$ 1.46	$ 1.46
Expiration date	May 24, 2014	May 24, 2014
Weighted Average Remaining life	4 months 24 days	1 year 4 months 24 days
2002 NQ 2 [Member]
Schedule of options outstanding and granted under stock option plans
Date granted	Apr. 03, 2006	Apr. 03, 2006
Options Outstanding	40,000	40,000
Exercisable options	40,000	40,000
Exercise Price	$ 1.08	$ 1.08
Expiration date	Apr. 02, 2016	Apr. 02, 2016
Weighted Average Remaining life	2 years 3 months 18 days	3 years 3 months 18 days
2002 NQ 3 [Member]
Schedule of options outstanding and granted under stock option plans
Date granted	Dec. 17, 2007	Dec. 17, 2007
Options Outstanding	40,000	50,000
Exercisable options	40,000	50,000
Exercise Price	$ 1.32	$ 1.32
Expiration date	Dec. 16, 2017	Dec. 16, 2017
Weighted Average Remaining life	4 years	5 years
2008 NQ [Member]
Schedule of options outstanding and granted under stock option plans
Date granted	Jan. 11, 2009	Jan. 11, 2009
Options Outstanding	40,000	50,000
Exercisable options	40,000	50,000
Exercise Price	$ 0.69	$ 0.69
Expiration date	Jan. 10, 2019	Jan. 10, 2019
Weighted Average Remaining life	5 years 1 month 6 days	6 years 1 month 6 days
2008 NQ 1 [Member]
Schedule of options outstanding and granted under stock option plans
Date granted	Apr. 26, 2010	Apr. 26, 2010
Options Outstanding	20,000	25,000
Exercisable options	20,000	25,000
Exercise Price	$ 2.07	$ 2.07
Expiration date	Apr. 25, 2020	Apr. 25, 2020
Weighted Average Remaining life	6 years 4 months 24 days	7 years 4 months 24 days