https://www.ibdb.com/broadway-cast-staff/$1

https://www.ibdb.com/broadway-organization/$1

^https?:\/\/(?:www\.)?ibdb\.com\/broadway-cast-staff\/\D*([1-9][0-9]{3,5})

^https?:\/\/(?:www\.)ibdb\.com\/person\.php\?id=([1-9][0-9]{3,5})

[1-9][0-9]{3,5}