Note 4 - Restricted Cash Equivalents and Short-Term Investments	9 Months Ended
Sep. 30, 2013
Disclosure Text Block Supplement [Abstract]
Restricted Assets Disclosure [Text Block]	4. Restricted Cash Equivalents and Short-Term Investments As of September 30, 2013 and December 31, 2012, restricted cash equivalents and short-term investments consisted of $1.0 million each, respectively. The $1.0 million is used as collateral for a letter of credit of the same amount which secures the Company’s obligations under the office space lease for IPC’s former corporate headquarters.

The entire disclosure for assets that are restricted in their use, generally by contractual agreements or regulatory requirements. This would include, but not limited to, a description of the restricted assets and the terms of the restriction.

No definition available.

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