N-2
N-2 - $ / shares | 6 Months Ended | ||||||
Jun. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | |
Cover [Abstract] | |||||||
Entity Central Index Key | 0000813623 | ||||||
Amendment Flag | false | ||||||
Document Type | N-CSRS | ||||||
Entity Registrant Name | Swiss Helvetia Fund, Inc. | ||||||
Capital Stock, Long-Term Debt, and Other Securities [Abstract] | |||||||
Capital Stock [Table Text Block] | Note 4—Capital Share Transactions The Fund is authorized to issue up to 50 million shares of capital stock. Transactions in capital shares were as follows: For the Period Ended For the Year Ended June 30, 2023 December 31, 2022 Shares Amount Shares Amount Dividends Reinvested — $ — — $ — Repurchased through Stock Repurchase Program (Note 6) (205,045 ) (1,687,598 ) (16,504 ) (120,928 ) Repurchased from Tender Offer (Note 7) — — — — Net Increase/(Decrease) (205,045 ) $ (1,687,598 ) (16,504 ) $ (120,928 ) | ||||||
Document Period End Date | Jun. 30, 2023 | ||||||
Common Shares [Member] | |||||||
General Description of Registrant [Abstract] | |||||||
Share Price | $ 8.22 | $ 8.22 | $ 7.56 | $ 9.94 | $ 8.94 | $ 8.41 | $ 6.90 |
NAV Per Share | $ 9.70 | $ 9.70 | $ 8.80 | $ 11.50 | $ 10.45 | $ 9.71 | $ 7.96 |
Capital Stock, Long-Term Debt, and Other Securities [Abstract] | |||||||
Outstanding Security, Authorized [Shares] | 50,000,000 | ||||||
Outstanding Security, Not Held [Shares] | 12,990,705 |