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Statements of Cash Flows (USD $)
 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Cash flows from operating activities    
Net income (loss) $ 615,373 $ (197,869)
Adjustments to reconcile net income (loss) to net cash used in operating activities    
Change in fair value of conversion feature 32,918 61,665
Stock-based compensation 46,875 53,125
Realized losses on available-for-sale securities 1,231 1,778
Gain on distribution of investment in ClearSign (811,713) 0
Changes in operating assets and liabilities    
Other current assets (5,228) 22,878
Accounts payable 8,500 10,400
Accrued stock compensation 0 (9,375)
Income taxes payable 7,213 0
Rent deposit 0 (8,175)
Net cash used in operating activities (104,831) (65,573)
Cash flows from investing activities    
Purchases of available-for-sale securities (1,492,106) (899,305)
Proceeds received from sales of available-for-sale securities 0 192,650
Proceeds received from maturities of available-for-sale securities 1,976,750 2,505,174
Investment in ClearSign 0 (1,000,000)
Net cash provided by investing activities 484,644 798,519
Net increase in cash and cash equivalents 379,813 732,946
Cash and cash equivalents at beginning of period 422,984 40,361
Cash and cash equivalents at end of period 802,797 773,307
Supplemental cash flow disclosure:    
Income taxes paid 800 800
Supplemental non-cash disclosure    
Unrealized gain (loss) on available-for-sale securities 6,737 (17,133)
Dividend of investment in ClearSign common stock $ 1,803,808 $ 0