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Acquisitions and Divestitures - Dynamic Acquisition - Unaudited Pro Forma Results of Operations (Parenthetical) (Details) (USD $)
 12 Months Ended 0 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Apr. 17, 2012
Dynamic Acquisition
Dec. 31, 2012
Dynamic Acquisition
Dec. 31, 2012
Pro Forma
Dynamic Acquisition
Dec. 31, 2011
Pro Forma
Dynamic Acquisition
Business Acquisition [Line Items]              
Bargain purchase gain $ 0 $ 122,696,000 $ 0 $ 122,696,000 [1]   $ (122,696,000) $ 122,696,000
Valuation allowance release 3,842,000 (100,288,000) (6,986,000)   (100,288,000) 100,288,000 (100,288,000)
Fees to secure financing for acquisition           (10,900,000) 10,900,000
Acquisition related costs         $ 13,000,000 $ (13,000,000) $ 13,000,000
[1] The bargain purchase gain resulted from the excess of the fair value of net assets acquired over consideration paid. To validate the bargain purchase gain on this acquisition, the Company reviewed its initial identification and valuation of assets acquired and liabilities assumed. The Company believes it was able to acquire Dynamic for less than the estimated fair value of its net assets due to their offshore location resulting in less bidding competition.