Stock Option Plans (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summary of option activity for employees and non-employees
Number of Options, Beginning Balance	1,139,282	928,504
Weighted Averaged Exercise Price, Beginning Balance	$ 0.89	$ 1.07
Weighted Average Remaining Contractual Life (Years), Beginning Balance	3 years 26 days	3 years 7 months 13 days	3 years 11 months 1 day
Aggregate Intrinsic Options Value, Beginning Balance	$ 1,000	$ 115,849
Number of Options, Exercisable, Beginning Balance	638,176
Weighted Averaged Exercise Price, Exercisable, Beginning Balance	$ 0.89
Weighted Average Remaining Contractual Life (Years), Exercisable, Beginning Balance	2 years 5 months 5 days	2 years 9 months 15 days
Aggregate Intrinsic Options Value, Exercisable, Beginning Balance	1,000
Number of Options, Granted	211,459	277,778
Weighted averaged exercise price, Granted	$ 0.95	$ 0.36
Weighted Average Remaining Contractual Life (Years), Granted	4 years 4 months 17 days	5 years
Weighted-average Grant Fair Value, Granted	$ 0.95	$ 0.33
Number of Options, Exercised
Weighted averaged exercise price, Exercised	$ 0.00	$ 0.00
Weighted Average Remaining Contractual Life (Years), Exercised
Number of Options, Forfeited or expired	(67,000)	(67,000)
Number of Options, Forfeited
Weighted Averaged Exercise Price, Forfeited or expired	$ 1.58	$ 1.17
Weighted Averaged Exercise Price, Forfeited
Weighted Average Remaining Contractual Life (Years), Forfeited
Number of Options, Ending Balance	1,283,741	1,139,282	928,504
Weighted Averaged Exercise Price, Ending Balance	$ 0.79	$ 0.89	$ 1.07
Weighted Average Remaining Contractual Life (Years), Ending Balance	3 years 26 days	3 years 7 months 13 days	3 years 11 months 1 day
Aggregate Intrinsic Options Value, Ending Balance	768,692	1,000	115,849
Number of Options, Exercisable, Ending Balance	849,066	638,176
Weighted Averaged Exercise Price, Exercisable, Ending Balance	$ 0.81	$ 0.89
Weighted Average Remaining Contractual Life (Years), Exercisable, Ending Balance	2 years 5 months 5 days	2 years 9 months 15 days
Aggregate Intrinsic Options Value, Exercisable, Ending Balance	527,370	1,000
Vested Options [Member]
Summary of option activity for employees and non-employees
Number of Options, Beginning Balance	638,176	471,722
Weighted Averaged Exercise Price, Beginning Balance	$ 0.89	$ 0.95
Number of Options, Exercised
Weighted averaged exercise price, Exercised
Number of options, Vested	277,222	233,454
Weighted Average Exercise Price, Vested	$ 0.92	$ 0.83
Number of Options, Forfeited	(66,332)	(67,000)
Weighted Averaged Exercise Price, Forfeited	$ 1.58	$ 1.17
Number of Options, Ending Balance	849,066	638,176
Weighted Averaged Exercise Price, Ending Balance	$ 0.81	$ 0.89
Nonvested Options [Member]
Summary of option activity for employees and non-employees
Number of Options, Beginning Balance	501,106	456,782
Weighted Averaged Exercise Price, Beginning Balance	$ 0.90	$ 1.20
Number of Options, Granted	211,459	277,778
Weighted averaged exercise price, Granted	$ 0.95	$ 0.36
Number of options, Vested	277,222	(233,454)
Weighted Average Exercise Price, Vested	$ 0.92	$ 0.83
Number of Options, Forfeited	668
Weighted Averaged Exercise Price, Forfeited	$ 1.15
Number of Options, Ending Balance	434,675	501,106
Weighted Averaged Exercise Price, Ending Balance	$ 0.91	$ 0.90
Option activity for non-employees [Member]
Summary of option activity for employees and non-employees
Number of Options, Beginning Balance	414,999	534,999
Weighted Averaged Exercise Price, Beginning Balance	$ 1.87	$ 1.85
Weighted Average Remaining Contractual Life (Years), Beginning Balance	1 year 3 months 26 days	1 year 5 months 5 days	1 year 6 months 4 days
Aggregate Intrinsic Options Value, Beginning Balance	12,000	99,617
Number of Options, Exercisable, Beginning Balance	399,443	514,998
Weighted Averaged Exercise Price, Exercisable, Beginning Balance	$ 1.90	$ 1.87
Weighted Average Remaining Contractual Life (Years), Exercisable, Beginning Balance	1 year 3 months 15 days	1 year 4 months 10 days	1 year 4 months 28 days
Aggregate Intrinsic Options Value, Exercisable, Beginning Balance	12,000	99,311
Number of Options, Granted		100,000
Weighted averaged exercise price, Granted		$ 0.24
Weighted Average Remaining Contractual Life (Years), Granted		2 years 6 months
Number of Options, Forfeited	(175,000)	(120,000)
Weighted Averaged Exercise Price, Forfeited	$ 1.79	$ 1.75
Weighted Average Remaining Contractual Life (Years), Forfeited
Number of Options, Ending Balance	239,999	414,999	534,999
Weighted Averaged Exercise Price, Ending Balance	$ 1.56	$ 1.87	$ 1.85
Weighted Average Remaining Contractual Life (Years), Ending Balance	1 year 3 months 26 days	1 year 5 months 5 days	1 year 6 months 4 days
Aggregate Intrinsic Options Value, Ending Balance	168,166	12,000	99,617
Number of Options, Exercisable, Ending Balance	234,442	399,443	514,998
Weighted Averaged Exercise Price, Exercisable, Ending Balance	$ 1.57	$ 1.90	$ 1.87
Weighted Average Remaining Contractual Life (Years), Exercisable, Ending Balance	1 year 3 months 15 days	1 year 4 months 10 days	1 year 4 months 28 days
Aggregate Intrinsic Options Value, Exercisable, Ending Balance	$ 166,944	$ 12,000	$ 99,311
Option activity for non-employees [Member] | Vested Options [Member]
Summary of option activity for employees and non-employees
Number of Options, Beginning Balance	399,443	514,998
Weighted Averaged Exercise Price, Beginning Balance	$ 1.90	$ 1.87
Number of Options, Exercised		100,000
Weighted averaged exercise price, Exercised	$ 0.00	$ 0.25
Number of options, Vested	9,999	104,445
Weighted Average Exercise Price, Vested	$ 1.10	$ 0.29
Number of Options, Forfeited	175,000	(120,000)
Weighted Averaged Exercise Price, Forfeited	$ 1.79	$ 1.75
Number of Options, Ending Balance	234,442	399,443
Weighted Averaged Exercise Price, Ending Balance	$ 1.57	$ 1.90
Option activity for non-employees [Member] | Nonvested Options [Member]
Summary of option activity for employees and non-employees
Number of Options, Beginning Balance	15,556	20,001
Weighted Averaged Exercise Price, Beginning Balance	$ 1.16	$ 1.21
Number of Options, Granted		100,000
Weighted averaged exercise price, Granted		$ 0.24
Number of Options, Exercised
Weighted averaged exercise price, Exercised	$ 0.00
Number of options, Vested	9,999	(104,445)
Weighted Average Exercise Price, Vested	$ 1.10	$ 0.29
Number of Options, Ending Balance	5,557	15,556
Weighted Averaged Exercise Price, Ending Balance	$ 1.27	$ 1.16