details? you mean the details on this german webpage?
well, i can, although not german
ok, so this schleswig-holstein ticket costs 21euros and allows up to 5 people and any own children under 14 (*lol*) to travel through Hamburg, Schleswig-Holstein and Mecklenburg-Vorpommern. (so Hamburg-Itzehoe too).
this ticket is valid from monday to friday, 9 a.m., to 3 a.m. the following day.
you can go with these trains: RegionalExpress, RegionalBahn and S-Bahn in second class.
you CAN'T go with following trains: D, ICE, EC and IC
if you start before 9 a.m. or go longer than 3 a.m., you have to buy an extra ticket (for the distance you go trough within that time).
there are also some infos about taking a bike or a dog with you, but i don't think you need this, do you?