9. Summary of Stock Options Outstanding and Exercisable (Detail) (USD $) | 12 Months Ended | |
Dec. 31, 2013 | Dec. 31, 2012 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' |
Options Outstanding and Exercisable, Weighted average remaining contractual terms (years) | '5 years 7 months 2 days | ' |
Options Outstanding and Exercisable, weighted Average Exercise price | $0.03 | $0.05 |
Exercise Price One [Member] | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' |
Options Outstanding and Exercisable ,Exercise prices | $0.01 | ' |
Options outstanding and exercisable at end of year, Shares | 12,000,000 | ' |
Options Outstanding and Exercisable, Weighted average remaining contractual terms (years) | '7 years | ' |
Options Outstanding and Exercisable, weighted Average Exercise price | $0.01 | ' |
Exercise Price Two [Member] | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' |
Options Outstanding and Exercisable ,Exercise prices | $0.01 | ' |
Options outstanding and exercisable at end of year, Shares | 400,000 | ' |
Options Outstanding and Exercisable, Weighted average remaining contractual terms (years) | '2 years 10 months 13 days | ' |
Options Outstanding and Exercisable, weighted Average Exercise price | $0.01 | ' |
Exercise Price Three [Member] | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' |
Options Outstanding and Exercisable ,Exercise prices | $0.01 | ' |
Options outstanding and exercisable at end of year, Shares | 40,355,693 | ' |
Options Outstanding and Exercisable, Weighted average remaining contractual terms (years) | '6 years 8 months 23 days | ' |
Options Outstanding and Exercisable, weighted Average Exercise price | $0.01 | ' |
Exercise Price Four [Member] | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' |
Options Outstanding and Exercisable ,Exercise prices | $0.02 | ' |
Options outstanding and exercisable at end of year, Shares | 11,000,000 | ' |
Options Outstanding and Exercisable, Weighted average remaining contractual terms (years) | '5 years 9 months | ' |
Options Outstanding and Exercisable, weighted Average Exercise price | $0.02 | ' |
Exercise Price Five [Member] | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' |
Options Outstanding and Exercisable ,Exercise prices | $0.02 | ' |
Options outstanding and exercisable at end of year, Shares | 250,000 | ' |
Options Outstanding and Exercisable, Weighted average remaining contractual terms (years) | '2 years 2 months 1 day | ' |
Options Outstanding and Exercisable, weighted Average Exercise price | $0.02 | ' |
Exercise Price Six [Member] | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' |
Options Outstanding and Exercisable ,Exercise prices | $0.02 | ' |
Options outstanding and exercisable at end of year, Shares | 250,000 | ' |
Options Outstanding and Exercisable, Weighted average remaining contractual terms (years) | '2 years 4 months 13 days | ' |
Options Outstanding and Exercisable, weighted Average Exercise price | $0.02 | ' |
Exercise Price Seven [Member] | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' |
Options Outstanding and Exercisable ,Exercise prices | $0.02 | ' |
Options outstanding and exercisable at end of year, Shares | 22,316,667 | ' |
Options Outstanding and Exercisable, Weighted average remaining contractual terms (years) | '5 years 10 months 13 days | ' |
Options Outstanding and Exercisable, weighted Average Exercise price | $0.02 | ' |
Exercise Price Eight [Member] | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' |
Options Outstanding and Exercisable ,Exercise prices | $0.02 | ' |
Options outstanding and exercisable at end of year, Shares | 12,000,000 | ' |
Options Outstanding and Exercisable, Weighted average remaining contractual terms (years) | '6 years 6 months 29 days | ' |
Options Outstanding and Exercisable, weighted Average Exercise price | $0.02 | ' |
Exercise Price Nine [Member] | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' |
Options Outstanding and Exercisable ,Exercise prices | $0.03 | ' |
Options outstanding and exercisable at end of year, Shares | 400,000 | ' |
Options Outstanding and Exercisable, Weighted average remaining contractual terms (years) | '2 years 6 months 29 days | ' |
Options Outstanding and Exercisable, weighted Average Exercise price | $0.03 | ' |
Exercisepriceten [Member] | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' |
Options Outstanding and Exercisable ,Exercise prices | $0.05 | ' |
Options outstanding and exercisable at end of year, Shares | 4,444,444 | ' |
Options Outstanding and Exercisable, Weighted average remaining contractual terms (years) | '4 months 2 days | ' |
Options Outstanding and Exercisable, weighted Average Exercise price | $0.05 | ' |
Exercise price eleven [Member] | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' |
Options Outstanding and Exercisable ,Exercise prices | $0.07 | ' |
Options outstanding and exercisable at end of year, Shares | 1,500,000 | ' |
Options Outstanding and Exercisable, Weighted average remaining contractual terms (years) | '1 month 10 days | ' |
Options Outstanding and Exercisable, weighted Average Exercise price | $0.07 | ' |
Exercise price twelve [Member] | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' |
Options Outstanding and Exercisable ,Exercise prices | $0.08 | ' |
Options outstanding and exercisable at end of year, Shares | 10,250,000 | ' |
Options Outstanding and Exercisable, Weighted average remaining contractual terms (years) | '3 years 3 months | ' |
Options Outstanding and Exercisable, weighted Average Exercise price | $0.08 | ' |
Exercise price thirteen [Member] | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' |
Options Outstanding and Exercisable ,Exercise prices | $0.08 | ' |
Options outstanding and exercisable at end of year, Shares | 1,500,000 | ' |
Options Outstanding and Exercisable, Weighted average remaining contractual terms (years) | '3 months 7 days | ' |
Options Outstanding and Exercisable, weighted Average Exercise price | $0.08 | ' |
Exercise price fourteen [Member] | ' | ' |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' |
Options Outstanding and Exercisable ,Exercise prices | $0.09 | ' |
Options outstanding and exercisable at end of year, Shares | 2,916,667 | ' |
Options Outstanding and Exercisable, Weighted average remaining contractual terms (years) | '3 months 7 days | ' |
Options Outstanding and Exercisable, weighted Average Exercise price | $0.09 | ' |