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Income Taxes (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended |  |  | 12 Months Ended
--- | --- | --- | --- | --- | ---
Mar. 31, 2014 | Dec. 31, 2013 | Mar. 31, 2014 Unrestricted [Member] | Mar. 31, 2014 Restricted [Member] | Dec. 31, 2008 Operating Loss Carryforwards Per Annum Until 2008 [Member] | Dec. 31, 2009 Operating Loss Carryforwards Per Year After 2008 [Member]
Operating loss carryforwards | $ 74,422 |  | $ 59,560 | $ 14,862 | $ 2,500 | $ 1,700
Tax Credit Carryforward, Amount | $ 547 |  |  |  |  |
Operating Loss Carryforwards, Expiration Date | Substantially all of the net operating loss carry forwards and unused minimum tax credit carry forwards expire between 2024 and 2034 |  |  |  |  |
Operating Loss Carryforwards, Limitations on Use | The Company’s utilization of restricted net operating tax loss carry forwards against future income for tax purposes is restricted pursuant to the “change in ownership” rules in Section 382 of the Internal Revenue Code. These rules, in general, provide that an ownership change occurs when the percentage shareholdings of 5% direct or indirect stockholders of a loss corporation have, in aggregate, increased by more than 50 percentage points during the immediately preceding three years. | The Company’s utilization of restricted net operating tax loss carry forwards against future income for tax purposes is restricted pursuant to the “change in ownership” rules in Section 382 of the Internal Revenue Code. These rules, in general, provide that an ownership change occurs when the percentage shareholdings of 5% direct or indirect stockholders of a loss corporation have, in aggregate, increased by more than 50 percentage points during the immediately preceding three years. |  |  |  | The Company’s utilization of restricted net operating tax loss carry forwards against future income for tax purposes is restricted pursuant to the “change in ownership” rules in Section 382 of the Internal Revenue Code. These rules, in general, provide that an ownership change occurs when the percentage shareholdings of 5% direct or indirect stockholders of a loss corporation have, in aggregate, increased by more than 50 percentage points during the immediately preceding three years.

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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 + Details
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- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Carryforwards -URI http://asc.fasb.org/extlink&oid=6506874 + Details
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