Cover
Cover - shares | 3 Months Ended | |
Jun. 30, 2022 | Jul. 29, 2022 | |
Cover [Abstract] | ||
Document Type | 10-Q | |
Document Quarterly Report | true | |
Document Period End Date | Jun. 30, 2022 | |
Document Transition Report | false | |
Securities Act File Number | 814-00061 | |
Entity Registrant Name | CAPITAL SOUTHWEST CORPORATION | |
Entity Incorporation, State or Country Code | TX | |
Entity Tax Identification Number | 75-1072796 | |
Entity Address, Address Line One | 8333 Douglas Avenue | |
Entity Address, Address Line Two | Suite 1100 | |
Entity Address, City or Town | Dallas | |
Entity Address, State or Province | TX | |
Entity Address, Postal Zip Code | 75225 | |
City Area Code | 214 | |
Local Phone Number | 238-5700 | |
Title of 12(b) Security | Common Stock, $0.25 par value per share | |
Trading Symbol | CSWC | |
Security Exchange Name | NASDAQ | |
Entity Current Reporting Status | Yes | |
Entity Filer Category | Non-accelerated Filer | |
Entity Small Business | false | |
Entity Emerging Growth Company | false | |
Entity Shell Company | false | |
Entity Common Stock, Shares Outstanding | 27,530,610 | |
Entity Central Index Key | 0000017313 | |
Amendment Flag | false | |
Current Fiscal Year End Date | --03-31 | |
Document Fiscal Year Focus | 2023 | |
Document Fiscal Period Focus | Q1 |