I work in an Active Directory environment where new SIDs have RIDs over 280,000 when attempting to set ldap_idmap_range_size in sssd.conf anything larger that 268204 causes the following errors in the log file

(Wed Jul 30 10:38:44 2014) [sssd[be[DOMAIN.EDU]]] [load_backend_module] (0x0010): Error (5) in module (ad) initialization (sssm_ad_id_init)!
(Wed Jul 30 10:38:44 2014) [sssd[be[DOMAIN.EDU]]] [be_process_init] (0x0010): fatal error initializing data providers
(Wed Jul 30 10:38:44 2014) [sssd[be[DOMAIN.EDU]]] [main] (0x0010): Could not initialize backend [5]

I have tested in both Ubuntu 14.04 and CentOS 7.0 with the same results.

Any help is greatly appreciated!