Note 7. Other Current Assets (Detail) - Other Current Assets (USD $)	Jun. 30, 2012	Dec. 31, 2011
Other current assets	$ 939,163	$ 961,726
Advances To Investigator Sites [Member]
Other current assets	758,296	758,296
Raw Materials For Thermodox® Registration Batches [Member]
Other current assets	108,932	163,561
Deposits For Future Investigator Grants [Member]
Other current assets	46,436
Franchise Taxes Receivable [Member]
Other current assets	4,076	39,104
Miscellaneous [Member]
Other current assets	$ 21,423	$ 765