Detention centres are called “pre-removal centres”; indefinite detention duration is called “protection from the poverty of freedom.
The Legal Council of State on February 11th issued a disgraceful opinion the detention duration of migrants / refugees (No. 44/2014). It pretty much says that after the expiry of the 18-month (maximum) detention of aliens, they can still be held for an indefinite period. This extended detention which is against European Law is called “caveat of compulsory residence in a pre-removal centre” and as such is only ending in case of co-operation for voluntary return.