Logging to deleted files

Hello all,

For some reason I'm having an issue with rotation of some of my Foreman and Squid logs. It appears that the processes aren't releasing the logs and continuing to write to the deleted files. For example:

$ sudo lsof /var/log/ | grep delete
squid 70644 root 5u REG 253,6 7165 2117710 /var/log/squid/cache.log-20170319 (deleted)
squid 70646 squid 5u REG 253,6 7165 2117710 /var/log/squid/cache.log-20170319 (deleted)
ruby 70859 foreman-proxy 7w REG 253,6 1042 1050840 /var/log/foreman-proxy/smart_proxy_dynflow_core.log-20170318 (deleted)
ruby 70968 foreman-proxy 7w REG 253,6 16473 1050819 /var/log/foreman-proxy/proxy.log-20170318 (deleted)

I'm running Foreman 1.13.4 on CentOS 7 and have not modified the provided logrotate.d files, though in my main logrotate.conf I have enabled "compress" as a global option.

Any clues as to what may be going on here?