| Document and Entity Information - shares | 3 Months Ended | |
| Jun. 30, 2018 | Aug. 10, 2018 | |
| Document And Entity Information | ||
| Entity Registrant Name | FCCC INC | |
| Entity Central Index Key | 730,669 | |
| Document Type | 10-Q | |
| Document Period End Date | Jun. 30, 2018 | |
| Amendment Flag | false | |
| Current Fiscal Year End Date | --03-31 | |
| Is Entity a Well-known Seasoned Issuer? | No | |
| Is Entity a Voluntary Filer? | No | |
| Is Entity's Reporting Status Current? | Yes | |
| Entity Filer Category | Smaller Reporting Company | |
| Entity Common Stock, Shares Outstanding | 3,461,022 | |
| Document Fiscal Period Focus | Q1 | |
| Document Fiscal Year Focus | 2,019 |
| CONDENSED BALANCE SHEETS - USD ($) $ in Thousands | Jun. 30, 2018 | Mar. 31, 2018 |
| Current Assets: | ||
| Cash and cash equivalents | $ 149 | $ 188 |
| Prepaid expense | 13 | 3 |
| Total current assets | 162 | 191 |
| Other asset | ||
| TOTAL ASSETS | 162 | 191 |
| Current liabilities: | ||
| Accounts payable and other accrued expenses | 6 | 19 |
| Total current liabilities | 6 | 19 |
| TOTAL LIABILITIES | 6 | 19 |
| Stockholders' Equity: | ||
| Common stock, no par value, 22,000,000 shares authorized, 3,461,022 issued and outstanding at June 30, 2018 and at March 31, 2018 | 800 | 800 |
| Additional paid-in capital | 8,396 | 8,396 |
| Accumulated deficit | (9,040) | (9,024) |
| Total stockholders' equity | 156 | 172 |
| TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | $ 162 | $ 191 |
| CONDENSED BALANCE SHEETS (Parenthetical) - $ / shares | Jun. 30, 2018 | Mar. 31, 2018 |
| Stockholders' equity: | ||
| Common stock, par value | $ 0 | $ 0 |
| Common stock, shares authorized | 22,000,000 | 22,000,000 |
| Common stock, shares issued | 3,461,022 | 3,461,022 |
| Common stock, shares outstanding | 3,461,022 | 3,461,022 |
| CONDENSED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Thousands | 3 Months Ended | |
| Jun. 30, 2018 | Jun. 30, 2017 | |
| Income: | ||
| Interest income | ||
| Total income | ||
| Expenses: | ||
| Operating and administrative expenses | 16 | 14 |
| Total expenses | 16 | 14 |
| Loss before income taxes | (16) | (14) |
| Income tax expense | ||
| Net Loss | $ (16) | $ (14) |
| Basic and diluted loss per share | $ (0.005) | $ (0.004) |
| Weighted average common shares outstanding Basic and diluted | 3,461,022 | 3,461,022 |
| CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands | 3 Months Ended | |
| Jun. 30, 2018 | Jun. 30, 2017 | |
| Cash Flows from Operating Activities | ||
| Net loss | $ (16) | $ (14) |
| Changes in assets and liabilities | ||
| Increase in prepaid expenses | (10) | (7) |
| Accounts payable and accrued expenses | (13) | 1 |
| Net cash used in operating activities | (39) | (20) |
| Net decrease in cash | (39) | (20) |
| Cash at the beginning of the period | 188 | 243 |
| Cash at the end of the period | $ 149 | $ 223 |
| CONDENSED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) - 3 months ended Jun. 30, 2018 - USD ($) $ in Thousands | Common Stock | Paid-In Capital | Accumulated Deficit | Total |
| Beginning balance, shares at Mar. 31, 2018 | 3,461,022 | |||
| Beginning balance, amount at Mar. 31, 2018 | $ 800 | $ 8,396 | $ (9,024) | $ 172 |
| Net loss | (16) | (16) | ||
| Ending balance, shares at Jun. 30, 2018 | 3,461,022 | |||
| Ending balance, amount at Jun. 30, 2018 | $ 800 | $ 8,396 | $ (9,040) | $ 156 |
| BASIS OF PRESENTATION | 3 Months Ended |
| Jun. 30, 2018 | |
| Notes to Financial Statements | |
| NOTE 1 - BASIS OF PRESENTATION | The accompanying unaudited condensed financial statements of FCCC, Inc. (the “Company”), have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Regulation SX, promulgated by the Securities and Exchange Commission. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair representation have been included herein. Operating results are not necessarily indicative of the results which may be expected for the year ending March 31, 2019 or other future periods. For further information, refer to the financial statements and notes thereto included in our Annual Report on Form 10-K for the fiscal year ended March 31, 2018. |
| RELATED PARTY TRANSACTIONS | 3 Months Ended |
| Jun. 30, 2018 | |
| Notes to Financial Statements | |
| NOTE 2 - RELATED PARTY TRANSACTIONS | None. |
| EARNINGS PER SHARE | 3 Months Ended |
| Jun. 30, 2018 | |
| Notes to Financial Statements | |
| NOTE 3 - EARNINGS PER SHARE | The Company follows FASB ASC 260, Earnings Per Share Basic and diluted loss per common share was calculated using the following number of shares for the three months ended June 30, 2018 and June 30, 2017: 2018 2017 Weighted average number of common shares outstanding (basic and diluted) 3,461,022 3,461,022 |
| EARNINGS PER SHARE (Tables) | 3 Months Ended |
| Jun. 30, 2018 | |
| Earnings Per Share | |
| Summary of basic and diluted loss per common share | 2018 2017 Weighted average number of common shares outstanding (basic and diluted) 3,461,022 3,461,022 |
| EARNINGS PER SHARE (Details) - shares | 3 Months Ended | |
| Jun. 30, 2018 | Jun. 30, 2017 | |
| Earnings Per Share Details Abstract | ||
| Weighted average number of common shares outstanding (basic and diluted) | 3,461,022 | 3,461,022 |
