VentureBeat has a detail from Zenimax's acquisition of id Software that was not revealed when Bethesda's parent picked up the Mesquite, TX-based developer. It turns out Zenimax issued convertible notes and promissory notes to raise $105 million to complete the sale, as revealed in SEC filings that also indicate id President and former CEO Todd Hollenshead has joined the ZeniMax board of directors. This $105 million figure may not represent the final purchase price for id, however, as ZeniMax also raised $300 million in private equity funding in 2007 (which means that after TARP, it's possible that American taxpayers paid part of this tab).