| Document and Entity Information - shares | 3 Months Ended | |
| Jun. 30, 2017 | Aug. 10, 2017 | |
| 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, 2017 | |
| 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 | 2,018 |
| CONDENSED BALANCE SHEETS - USD ($) $ in Thousands | Jun. 30, 2017 | Mar. 31, 2017 |
| Current assets | ||
| Cash and cash equivalents | $ 223 | $ 243 |
| Prepaid expense | 10 | 3 |
| Total current assets | 233 | 246 |
| Total Assets | 233 | 246 |
| Current liabilities | ||
| Accounts payable and other accrued expenses | 4 | 3 |
| Total current liabilities | 4 | 3 |
| Total Liabilities | 4 | 3 |
| Stockholders' Equity: | ||
| Common stock, no par value, 22,000,000 shares authorized, 3,461,022 issued and outstanding at March 31, 2017 and at June 30, 2017 | 800 | 800 |
| Additional paid-in capital | 8,396 | 8,396 |
| Accumulated deficit | (8,967) | (8,953) |
| Total stockholders' equity | 229 | 243 |
| TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | $ 233 | $ 246 |
| CONDENSED BALANCE SHEETS (Parenthetical) - $ / shares | Jun. 30, 2017 | Mar. 31, 2017 |
| 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, 2017 | Jun. 30, 2016 | |
| Income: | ||
| Interest income | ||
| Total income | ||
| Expense: | ||
| Operating and administrative expenses | 14 | 17 |
| Total expense | 14 | 17 |
| Loss before income taxes | (14) | (17) |
| Income tax expense | ||
| Net Loss | $ (14) | $ (17) |
| Basic and diluted loss per share | $ (0.004) | $ (0.005) |
| 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, 2017 | Jun. 30, 2016 | |
| Cash Flows from Operating Activities: | ||
| Net loss | $ (14) | $ (17) |
| Changes in assets and liabilities: | ||
| Increase in prepaid expense | (7) | (8) |
| Accounts payable and accrued expenses | 1 | 8 |
| Net cash used in operating activities | (20) | (17) |
| Net increase (decrease) in cash | (20) | (17) |
| Cash at the beginning of the period | 243 | 293 |
| Cash at the end of the period | $ 223 | $ 276 |
| STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - 3 months ended Jun. 30, 2017 - USD ($) $ in Thousands | Common Stock | Paid-In Capital | Accumulated Deficit | Total |
| Beginning Balance, Amount at Mar. 31, 2017 | $ 800 | $ 8,396 | $ (8,953) | $ 243 |
| Beginning Balance, Shares at Mar. 31, 2017 | 3,461,022 | |||
| Net loss | (14) | (14) | ||
| Ending Balance, Amount at Jun. 30, 2017 | $ 800 | $ 8,396 | $ (8,967) | $ 229 |
| Ending Balance, Shares at Jun. 30, 2017 | 3,461,022 |
| BASIS OF PRESENTATION | 3 Months Ended |
| Jun. 30, 2017 | |
| 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 S-X, 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, 2018 or other future periods. For further information, refer to the financial statements and notes thereto included in the Companys Annual Report on Form 10-K for the fiscal year ended March 31, 2017. |
| RELATED PARTY TRANSACTIONS | 3 Months Ended |
| Jun. 30, 2017 | |
| Notes to Financial Statements | |
| NOTE 2 - RELATED PARTY TRANSACTIONS | None. |
| EARNINGS PER SHARE | 3 Months Ended |
| Jun. 30, 2017 | |
| 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, 2017 and June 30, 2016: 2017 2016 Weighted average number of common shares outstanding (basic and diluted) 3,461,022 3,461,022 |
| EARNINGS PER SHARE (Table) | 3 Months Ended |
| Jun. 30, 2017 | |
| Earnings Per Share Table | |
| Schedule Of Earnings Per Share | 2017 2016 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, 2017 | Jun. 30, 2016 | |
| Earnings Per Share Details | ||
| Weighted average number of common shares outstanding (basic and diluted) | 3,461,022 | 3,461,022 |
