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Balance Sheets [Parenthetical] - $ / shares
Mar. 31, 2016
Dec. 31, 2015
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized 7,500,000 7,500,000
Common stock, share issued 6,232,778 6,239,073
Common stock, shares outstanding 6,210,278 6,206,573
Deferred Compensation Arrangement with Individual, Shares Authorized for Issuance 22,500 32,500