They probably have plenty of cash. The key is to always be building up the reserves and not having to use them too often. It may be that the numbers are looking a bit close and they are seeking ways to prevent cash drain in the near or long term.
It would be interesting to see how expenses have changed over time, but I doubt we'll ever see those. They still must have quite a lot of costs associated with running things from the NY locations (they are still in the midst of building the large campus at Ramapo, aren't they?). They don't have to pay much in salaries, but they still have expenses for housing and feeding the volunteers, and for keeping things running, etc.
They can only reduce expenses so much. At some point, they would need to build up revenue sources or risk a negative balance sheet.