start = new LocalDate(2010, 1, 1).toDateMidnight().toDateTime();
DateTime current = start;
Period period = Period.months(2);
for (int i = 1; i <= 10; i++) {
DateTime end = current.plus(period);
DetailItem detail = new DetailItem(200, i + "", current, end);
current = end;
detailItems.add(detail);
}
}