I have just checked in changeset 54311 to the Gepsio codebase. This check completes support for the calculation binding and validation rules given in the XBRL specification. Gepsio will now throw an exception if calculation links are found with incorrect values. The decimals and precision attributes are honored on numeric facts, and precision is inferred where necessary. The weight attribute found on calculation arcs are also honored.
I will be using this changeset to make the next official CTP release. Once I update some documentation, I will be releasing a new binaries for those wishing to grab the .NET assembly without having to build the source. Look for the Jan 2011 CTP soon!