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Schedule 1 - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2011
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] | Schedule 1 - Valuation and Qualifying Accounts
For the years ended December 31, 2011, 2010 and 2009 ($ in thousands) |
|  | Balance at |  |  | Additions Charged to |  |  |  |  |  | Balance |
Year ended |  | Beginning |  |  | Costs and |  |  | Other |  |  |  |  |  | at End |
December 31, 2011 |  | of Period |  |  | Expenses |  |  | Accounts |  |  | Deductions |  |  | of Period |
Tax valuation allowance |  | $ | 50,312 |  |  | $ | 4,476 |  |  | $ | - |  |  | $ | - |  |  | $ | 54,788 |
Year ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2010 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax valuation allowance |  | $ | 47,350 |  |  | $ | 2,962 |  |  | $ | - |  |  | $ | - |  |  | $ | 50,312 |
Year ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2009 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax valuation allowance |  | $ | 46,400 |  |  | $ | 950 |  |  | $ | - |  |  | $ | - |  |  | $ | 47,350 |

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration