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Supplemental Cash Flow Information - Supplemental Cash Flow Information (Detail) (USD $)
1 Months Ended 9 Months Ended 208 Months Ended
Apr. 30, 2013
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Supplemental disclosures of cash flow information:        
Interest paid         $ 180,719
Issuance of warrants, common stock and preferred stock for:        
Conversion of notes payable and accrued interest         1,213,988
Prepaid services to consultants         1,482,781
Conversion of preferred stock         13,674
Acquisitions         30,666,878
Issuance of common stock to pay dividends         213,000
Financial advisor services in conjunction with financings         3,477,571
Underwriter commissions in conjunction with financings         766,784
Acquisition of treasury stock in settlement of a claim         34,737
Cancellation of treasury stock         (34,737)
Assumptions of liabilities in acquisitions         1,531,806
Fair value of contingent liabilities, net of contingent assets, recorded at acquisition date         784,419
Issuance of common stock for milestone achievement   250    250
Acquisition of license agreement for long-term debt         161,180
Unrealized loss/(gain) on investment securities   26,528 (79) 26,566
Disposal of equipment in conjunction with settlement of a liability 99,875 99,875    99,875
Cashless exercise of warrants         4,312
Dividends accrued         621,040
Trade asset converted to available-for-sale asset         108,000
Dividends extinguished         408,240
Trade payable converted to note payable         83,948
Issuance of warrants for return of common stock         50,852
Detachable warrants issued with notes payable         450,000
Cumulative preferred stock dividends         13,502,403
Purchases of property and equipment in accounts payable         22,966
Financing costs in accounts payable and accrued liabilities   $ 116,336    $ 116,336