These goods are nonexclusive and nonrival.  
The fact that ideas fall into this economic category is used as justification for intellectual property laws.  They present an example of market failure: without intervention, a private producer has no motivation to produce them due to the free rider problem.  These goods are nonexclusive and nonrival.  FTP, identify these goods which tend to be provided by government, an example of which is law enforcement.
The fact that ideas fall into this economic category is used as justification for intellectual property laws.  
public good