Acquisition of Novavax AB	6 Months Ended
Jun. 30, 2014
Acquisition Of Novavax AB [Abstract]
Acquisition Of Novavax AB	Note 4 – Acquisition Novavax AB During the second quarter of 2014, the Company completed its purchase of the remaining 0.5% shares outstanding from the holders of such securities of Novavax AB. As a result, Novavax AB is now a wholly owned subsidiary of Novavax. The results of Novavax AB's operations have been included in the consolidated financial statements since the acquisition date, July 31, 2013. Due to new information obtained in the first quarter of 2014 about facts and circumstances that existed at the acquisition date regarding certain accrued contingencies related to its pre-existing contractual rights and obligations, the Company reduced the carrying value of its goodwill retrospectively as of the acquisition date related to the acquisition by $0.8 million from $26.2 million to $25.4 million, which represents the purchase price paid in the acquisition that was in excess of the fair value of the assets acquired and liabilities assumed. The goodwill generated from the acquisition is not deductible for income tax purposes.

Note 4 – Acquisition Novavax AB

During the second quarter of 2014, the Company completed its purchase of the remaining 0.5% shares outstanding from the holders of such securities of Novavax AB. As a result, Novavax AB is now a wholly owned subsidiary of Novavax. The results of Novavax AB's operations have been included in the consolidated financial statements since the acquisition date, July 31, 2013. Due to new information obtained in the first quarter of 2014 about facts and circumstances that existed at the acquisition date regarding certain accrued contingencies related to its pre-existing contractual rights and obligations, the Company reduced the carrying value of its goodwill retrospectively as of the acquisition date related to the acquisition by $0.8 million from $26.2 million to $25.4 million, which represents the purchase price paid in the acquisition that was in excess of the fair value of the assets acquired and liabilities assumed. The goodwill generated from the acquisition is not deductible for income tax purposes.