XML 25 R31.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Marketable Securities and Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) | Sep. 30, 2013 | Dec. 31, 2012
--- | --- | ---
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | $ 42,772,783 | $ 20,690,939
Liabilities, fair value | 14,095,818 | 2,859,899
Using Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 29,423,020 | 12,389,738
Liabilities, fair value | 0 | 0
Using Significant Other Unobservable Inputs (Level 2) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 13,104,863 | 8,034,001
Liabilities, fair value | 0 | 0
Using Significant Unobservable Inputs (Level 3) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 244,900 | 267,200
Liabilities, fair value | 14,095,818 | 2,859,899
Money market funds [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 18,338,897 | 1,686,406
Money market funds [Member] | Using Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 18,338,897 | 1,686,406
Money market funds [Member] | Using Significant Other Unobservable Inputs (Level 2) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 0 | 0
Money market funds [Member] | Using Significant Unobservable Inputs (Level 3) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 0 | 0
Mutual funds [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 13,104,863 | 7,583,931
Mutual funds [Member] | Using Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 0 | 0
Mutual funds [Member] | Using Significant Other Unobservable Inputs (Level 2) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 13,104,863 | 7,583,931
Mutual funds [Member] | Using Significant Unobservable Inputs (Level 3) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 0 | 0
Certificates of deposit [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value |  | 250,000
Certificates of deposit [Member] | Using Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value |  | 0
Certificates of deposit [Member] | Using Significant Other Unobservable Inputs (Level 2) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value |  | 250,000
Certificates of deposit [Member] | Using Significant Unobservable Inputs (Level 3) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value |  | 0
Municipal bonds [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value |  | 200,070
Municipal bonds [Member] | Using Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value |  | 0
Municipal bonds [Member] | Using Significant Other Unobservable Inputs (Level 2) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value |  | 200,070
Municipal bonds [Member] | Using Significant Unobservable Inputs (Level 3) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value |  | 0
Investment in affiliated entity [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 11,084,123 | 10,703,332
Investment in affiliated entity [Member] | Using Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 11,084,123 | 10,703,332
Investment in affiliated entity [Member] | Using Significant Other Unobservable Inputs (Level 2) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 0 | 0
Investment in affiliated entity [Member] | Using Significant Unobservable Inputs (Level 3) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 0 | 0
Common stock warrants [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 244,900 | 267,200
Liabilities, fair value | 14,095,818 | 2,859,899
Common stock warrants [Member] | Using Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 0 | 0
Liabilities, fair value | 0 | 0
Common stock warrants [Member] | Using Significant Other Unobservable Inputs (Level 2) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 0 | 0
Liabilities, fair value | 0 | 0
Common stock warrants [Member] | Using Significant Unobservable Inputs (Level 3) [Member] |  |
Financial assets and liabilities that are measured at fair value on recurring basis |  |
Assets, fair value | 244,900 | 267,200
Liabilities, fair value | $ 14,095,818 | $ 2,859,899

X
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
Name: | us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant