Ico price was around 0.13$ ---> 1 eth was 520$ and with 1 eth they gave you 3840 IDH included bonus.
Then, there was distribution of unsold tokens, around another 2131 IDH for every ETH spent.
So, 2131 + 3840 = 5971 IDH every 1 ETH = 0.087$ every IDH was the ico price included the initial bonus + token distributions.