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Related Party Transactions - Additional Information (Detail) (USD $) | 9 Months Ended | 1 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Aug. 31, 2013 SAIC Constructors [Member] | Mar. 31, 2013 Golsen Group [Member] | Mar. 31, 2012 Golsen Group [Member] | Sep. 30, 2013 SAIC Energy [Member] | Dec. 31, 2012 SAIC Energy [Member]
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Dividends on preferred stock paid or declared | $ 300,000 | $ 300,000 |  | $ 300,000 | $ 300,000 |  |
Directors term expiration date | 2016 |  |  |  |  |  |
Related party payments |  |  |  |  |  | 5,734,000 | 127,000
Constructor's fees |  |  | $ 22,000,000 |  |  |  |

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