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Agreement with Roust Trading - Additional Information (Detail) (USD $)
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12 Months Ended | 1 Months Ended | 12 Months Ended | 12 Months Ended | 1 Months Ended | ||||||||
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Dec. 31, 2012
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Dec. 31, 2011
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May 07, 2012
Roust Trading Limited
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Mar. 08, 2013
Roust Trading Limited
Securities Purchase Agreement
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Dec. 31, 2012
Roust Trading Limited
Securities Purchase Agreement
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Dec. 31, 2012
Roust Trading Limited
Securities Purchase Agreement
Maximum
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Dec. 31, 2012
Roust Trading Limited
Securities Purchase Agreement
Minimum
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Dec. 31, 2012
Roust Trading Limited
Securities Purchase Agreement
After Execution of Amended Securities Purchase Agreement
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Dec. 31, 2012
Roust Trading Limited
Securities Purchase Agreement
After Stockholder Approval
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Dec. 31, 2012
Roust Trading Limited
Securities Purchase Agreement
After Backstop Escrow Release Date
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May 07, 2012
Roust Trading Limited
Senior Notes Due 2013
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May 07, 2012
Roust Trading Limited
Senior Rollover Notes Due 2013
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May 07, 2012
Roust Trading Limited
Senior Backstop Notes
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| Long-term Purchase Commitment [Line Items] | |||||||||||||
| Senior notes purchased by affiliates | $ 70,000,000 | ||||||||||||
| Senior notes purchased by affiliates due date | March 18, 2013 | ||||||||||||
| Interest rate percentage on issued debt | 3.00% | 3.00% | 6.00% | 6.00% | |||||||||
| Common stock purchase value under purchase agreement | 30,000 | 30,000,000 | |||||||||||
| Common stock issued under purchase agreement, shares | 5,714,286 | 3,000,000 | 5,000,000 | 2,000,000 | 13,300,000 | ||||||||
| Common stock purchase price under purchase agreement | $ 5.25 | ||||||||||||
| Common stock that could be potentially repurchased | 30,000,000 | ||||||||||||
| Debt instrument issuance amount | 70,000,000 | 102,600,000 | 107,500,000 | ||||||||||
| Debt instrument maturity date | Jul. 31, 2016 | Jul. 31, 2016 | Jul. 31, 2016 | ||||||||||
| Notes converted to shares, price per share | $ 3.44 | ||||||||||||
| Weighted average price of common stock | $ 4.13 | $ 2.75 | |||||||||||
| Minimum ownership percentage of outstanding stock above which triggers tender offer | 42.90% | ||||||||||||
| Common stock purchase price under purchase agreement | $ 0.01 | $ 0.01 | $ 0.01 | ||||||||||
| Release of restrictions on cash previously invested | 50,000,000 | ||||||||||||
| Additional borrowing under revolving credit facility | 15,000,000 | ||||||||||||
| Cash investment from Notes holder | $ 172,000,000 | $ 172,000,000 | $ 107,000,000 | ||||||||||
| Percentage of issued and outstanding shares of common stock exchanged for investment | 85.00% | ||||||||||||
| Percentage of common stock owned by RTL | 100.00% | ||||||||||||