| Cover | 12 Months Ended |
| Dec. 31, 2022 | |
| Cover [Abstract] | |
| Document Type | DEF 14A |
| Entity Registrant Name | Titan Pharmaceuticals, Inc. |
| Entity Central Index Key | 0000910267 |
| Amendment Flag | false |
| Pay vs Performance Disclosure - USD ($) | 12 Months Ended | |
| Dec. 31, 2022 | Dec. 31, 2021 | |
| Pay vs Performance Disclosure [Table] | ||
| Pay vs Performance [Table Text Block] | Marc Rubin David Lazar Year Summary Compensation Table Total for PEO (1) Compensation Actually Paid to PEO (1)(2) Summary Compensation Table Total for PEO (1) Compensation Actually Paid to PEO (1)(2) Summary Compensation Table Total for Non-PEO NEOs (3) Compensation Actually Paid to Non-PEO NEOs (3)(4) Value of Initial Fixed $100 Investment Based on Total Shareholder Return (5) Net Loss 2022 $ 426,248 $ 429,495 $ 152,250 $ 152,250 $ 362,340 $ 361,412 $ 23.80 $ (10,206,000 ) 2021 $ 884,247 $ 578,213 $ - $ - $ 877,644 $ 578,101 $ 31.00 $ (8,776,000 ) | |
| Named Executive Officers, Footnote [Text Block] | During 2022, our Chief Executive Officer was Marc Rubin through August 15, 2022, and David Lazar Dr. Rubin | |
| Adjustment To PEO Compensation, Footnote [Text Block] | Dr. Rubin 2022 2021 Summary Compensation Table Total $ 426,248 $ 884,247 Less, value of Stock Awards reported in Summary Compensation Table (57,782 ) (490,003 ) Plus, year-end fair value of outstanding and unvested equity awards granted in the year - 39,486 Plus, fair value of outstanding and vested equity awards granted in the year 49,514 144,534 Plus, year over year change in fair value of equity awards granted in prior years that vested in the year 11,515 - Compensation Actually Paid to Dr. Rubin $ 429,495 $ 578,264 | |
| Adjustment to Non-PEO NEO Compensation Footnote [Text Block] | Dr. Beebe DeVarney 2022 2021 Summary Compensation Table Total $ 362,340 $ 877,644 Less, value of Stock Awards reported in Summary Compensation Table (54,340 ) (490,003 ) Plus, year-end fair value of outstanding and unvested equity awards granted in the year - 39,486 Plus, fair value of outstanding and vested equity awards granted in the year 41,896 144,534 Plus, year over year change in fair value of equity awards granted in prior years that vested in the year 11,515 - Compensation Actually Paid to Dr. Beebe DeVarney $ 361,411 $ 571,661 | |
| Compensation Actually Paid vs. Total Shareholder Return [Text Block] | ||
| Compensation Actually Paid vs. Net Income [Text Block] | ||
| Total Shareholder Return Amount | $ 23.80 | $ 31 |
| Net Income (Loss) Attributable to Parent | $ (10,206,000) | $ (8,776,000) |
| PEO Name | David Lazar | Dr. Rubin |
| Marc Rubin [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| PEO Total Compensation Amount | $ 426,248 | $ 884,247 |
| PEO Actually Paid Compensation Amount | 429,495 | 578,213 |
| David Lazar [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| PEO Total Compensation Amount | 152,250 | |
| PEO Actually Paid Compensation Amount | 152,250 | |
| Non-PEO NEOs | ||
| Pay vs Performance Disclosure [Table] | ||
| Non-PEO NEO Average Total Compensation Amount | 362,340 | 877,644 |
| Non-PEO NEO Average Compensation Actually Paid Amount | 361,412 | 578,101 |
| Dr. Rubin [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| PEO Total Compensation Amount | 426,248 | 884,247 |
| PEO Actually Paid Compensation Amount | 429,495 | 578,264 |
| Dr. Rubin [Member] | Less, value of Stock Awards reported in Summary Compensation Table [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | (57,782) | (490,003) |
| Dr. Rubin [Member] | Plus, year-end fair value of outstanding and unvested equity awards granted in the year [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | 39,486 | |
| Dr. Rubin [Member] | Plus, fair value of outstanding and vested equity awards granted in the year [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | 49,514 | 144,534 |
| Dr. Rubin [Member] | Plus, year over year change in fair value of equity awards granted in prior years that vested in the year [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | 11,515 | |
| Dr. Beebe De Varney [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Non-PEO NEO Average Total Compensation Amount | 362,340 | 877,644 |
| Non-PEO NEO Average Compensation Actually Paid Amount | 361,411 | 571,661 |
| Dr. Beebe De Varney [Member] | Less, value of Stock Awards reported in Summary Compensation Table [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | (54,340) | (490,003) |
| Dr. Beebe De Varney [Member] | Plus, year-end fair value of outstanding and unvested equity awards granted in the year [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | 39,486 | |
| Dr. Beebe De Varney [Member] | Plus, fair value of outstanding and vested equity awards granted in the year [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | 41,896 | 144,534 |
| Dr. Beebe De Varney [Member] | Plus, year over year change in fair value of equity awards granted in prior years that vested in the year [Member] | ||
| Pay vs Performance Disclosure [Table] | ||
| Adjustment to Compensation Amount | $ 11,515 | |
