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Long Term Retention Plan - Long Term Retention Plans Accrued Compensation Expense (Detail) (USD $)	3 Months Ended
	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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X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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Period Type:	duration