3.25.4 html 4411 39 1 true 206 0 false 3 false false R1.htm 030000 - Disclosure - Form N-CSR Cover Sheet http://xbrl.sec.gov/oef/role/NcsrCover Form N-CSR Cover Cover 1 false false R2.htm 030001 - Disclosure - Shareholder Report Sheet http://xbrl.sec.gov/oef/role/ShareholderReport Shareholder Report Notes 2 false false R3.htm 040010 - Disclosure - Shareholder Report, Line Graph (Details) Sheet http://xbrl.sec.gov/oef/role/ShareholderReportLineGraphDetails Shareholder Report, Line Graph (Details) Details 3 false false R4.htm 040015 - Disclosure - Shareholder Report, Average Annual Return (Details) Sheet http://xbrl.sec.gov/oef/role/ShareholderReportAverageAnnualReturnDetails Shareholder Report, Average Annual Return (Details) Details 4 false false R5.htm 040020 - Disclosure - Shareholder Report, Holdings (Details) Sheet http://xbrl.sec.gov/oef/role/ShareholderReportHoldingsDetails Shareholder Report, Holdings (Details) Details 5 false false All Reports Book All Reports baroncapitalmgmt-20251231.xsd d61019dncsr.htm g15407g00a03.jpg g15407g01a01.jpg g15407g01a03.jpg g15407g69p35.jpg g15407rbaron_sig307.jpg g61019i14d5081227f0ced9afd0.jpg g61019i180fc43062f69075aed6.jpg g61019i191e2f409571934833df.jpg g61019i19d737076598091367e5.jpg g61019i23f5fe97c36e301115f2.jpg g61019i2563cdac1f599976c133.jpg g61019i2b8fd5d2830cf5a322ab.jpg g61019i2d53e05d19b8011aaa7b.jpg g61019i32dac549d07686ee2bd9.jpg g61019i33218b169bc18f590d41.jpg g61019i340390b191a26a1391f7.jpg g61019i345e1a9ee8230a764dd2.jpg g61019i34805985ae98eac14313.jpg g61019i37ea010ea95ef11dd979.jpg g61019i3cce1d744b626dae023a.jpg g61019i4104edd27a3a053330f0.jpg g61019i4120a58c9b7f9ee04f2b.jpg g61019i45bd9688f6844804c37c.jpg g61019i517f277c7a91b0edd5ef.jpg g61019i51ff6ecbff250f21e5f6.jpg g61019i5b55778656fa3d9602f2.jpg g61019i5bda91f463db063919fd.jpg g61019i5f5b5690280b0a014891.jpg g61019i6662a728c3d8eb1ef4ad.jpg g61019i68c5b5d1e3358211f30f.jpg g61019i6b23529260d11437134d.jpg g61019i729309dd4adf99adbcd3.jpg g61019i7a381870b3655fe3fe41.jpg g61019i7ed7c9fba18b4fed65fb.jpg g61019i816b1062bc59b928e4e6.jpg g61019i865d2a41c729852f2a4b.jpg g61019i8c52b00ee5d583f2d97a.jpg g61019i90dde6af461c399295af.jpg g61019i9b50671335eb34d36582.jpg g61019i9e7d788e866823322c06.jpg g61019ia4c4116ca0ac759cc65e.jpg g61019ia568ea70c6a1d21e3c98.jpg g61019ia8bf923f2d6a4aa34f41.jpg g61019ib4ae5f3ba603e8ad4ccd.jpg g61019ibfd183f519567efc42db.jpg g61019ic68cf91e742314a626b9.jpg g61019icc457e210f93f662c432.jpg g61019id022e795efa49ad19301.jpg g61019if9ebca18090e8d889e08.jpg g61019ifc943b6e24d086928bb3.jpg g90115g01a01.jpg g90115g01a03.jpg g90115g27s23.jpg g90115rbaron_sig307.jpg http://fasb.org/us-gaap/2025 http://xbrl.sec.gov/dei/2025 http://xbrl.sec.gov/oef/2025 false false