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Long Term Retention Plan - Long Term Retention Plans Accrued Compensation Expense (Detail) (USD $) | 3 Months Ended
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Mar. 31, 2014 | Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Long term retention plan | $ 765,775 | $ 1,710,752
Long Term Retention Plan 2009 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Long term retention plan | (350,923) | 407,920
Long Term Retention Plan 2010 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Long term retention plan | (182,895) | 393,796
Long Term Retention Plan 2011 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Long term retention plan | (101,112) | 411,200
Long Term Retention Plan 2012 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Long term retention plan | (947) | 497,836
Long Term Retention Plan 2013 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Long term retention plan | 603,861 |
Long Term Retention Plan 2014 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Long term retention plan | $ 797,791 |

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- Definition Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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Period Type: | duration

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- Details
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Period Type: | duration