Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE department ( department_id number, name text, creation text, ranking number, budget_in_billions number, num_employees number )
TABLE: CREATE TABLE head ( head_id number, name text, born_state text, age number )
TABLE: CREATE TABLE management ( department_id number, head_id number, temporary_acting text )

### Question ###
Which department has more than 1 head at a time? List the id, name and the number of heads.

### Accurate SQL ###

SELECT T1.department_id, T1.name, COUNT(*) FROM management AS T2 JOIN department AS T1 ON T1.department_id = T2.department_id GROUP BY T1.department_id HAVING COUNT(*) > 1