You sell at much higher prices and when that happens there will be much higher volume also. Until then you have to be confident that you are holding a deeply undervalued asset and be willing to be a little patient or be willing to sell in small quantities using limit orders.
IMO, there is definitely value here. Over $2 cash/share, $10+ book value. The question is how long will it take for this stock to start moving? It probably won't take much good news, but there hasn't been any for a while. At least the book value seems to be stabilizing a bit the last 4 quarters.
BTW, I only own 1,000 shares but might buy more if it dips lower in the next month or so(There doesn't seem to be too many value plays this year in the small cap market in regards to book value.)
Check out what the Book Value and Cash were over the past few years. You will find that the Book Value, Cash and price of the stock have in general all been going down. The stock price has never approached Book Value and most of the time has been below Cash.