 | ssmt:TopTwentyLargestShareholdersCountAxis | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-500000a |
 | ssmt:ParticularsOfCompanyAxis | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-500000a |
 | ssmt:OriginOfMembershipOwnershipAxis | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-500000a |
 | ssmt:ParticularsOfCompanyAxis | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-500000c |
 | ssmt:OriginOfMembershipOwnershipAxis | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-500000c |
 | ssmt:SubClassificationOfMemberCountAmongTwentyLargestShareholdersAxis | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-500000c |
 | ssmt:ParticularsOfCompanyAxis | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-600000a |
 | ssmt:OriginOfMembershipOwnershipAxis | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-600000a |
 | ssmt:ShareholderCountAxis | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-600000a |
 | ssmt:ParticularsOfCompanyAxis | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-600000c |
 | ssmt:OriginOfMembershipOwnershipAxis | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-600000c |
 | ssmt:SubClassificationOfShareholderCountAxis | parent-child | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-600000c |
 | ssmt:ParticularsOfCompanyAxis | hypercube-dimension | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-500000a |
 | ssmt:TopTwentyLargestShareholdersCountAxis | hypercube-dimension | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-500000a |
 | ssmt:OriginOfMembershipOwnershipAxis | hypercube-dimension | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-500000a |
 | ssmt:ParticularsOfCompanyAxis | hypercube-dimension | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-500000c |
 | ssmt:OriginOfMembershipOwnershipAxis | hypercube-dimension | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-500000c |
 | ssmt:SubClassificationOfMemberCountAmongTwentyLargestShareholdersAxis | hypercube-dimension | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-500000c |
 | ssmt:ParticularsOfCompanyAxis | hypercube-dimension | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-600000a |
 | ssmt:OriginOfMembershipOwnershipAxis | hypercube-dimension | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-600000a |
 | ssmt:ShareholderCountAxis | hypercube-dimension | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-600000a |
 | ssmt:ParticularsOfCompanyAxis | hypercube-dimension | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-600000c |
 | ssmt:OriginOfMembershipOwnershipAxis | hypercube-dimension | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-600000c |
 | ssmt:SubClassificationOfShareholderCountAxis | hypercube-dimension | http://xbrl.ssm.com.my/role/ssm/rol_ssmt-ar3_2017-12-31/ssmt-ar3_2017-12-31_role-600000c |