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Balance Sheets - (Parenthetical) - $ / shares	Dec. 31, 2020	Dec. 31, 2019
Preferred stock
Par value (in dollars per share)	$ 0.001	$ 0.001
Shares authorized (in shares)	10,000,000	10,000,000
Shares issued (in shares)	0	0
Shares outstanding (in shares)	0	0
Common stock
Par value (in dollars per share)	$ 0.001	$ 0.001
Shares authorized (in shares)	200,000,000	200,000,000
Shares issued (in shares)	12,652,308	12,560,990
Shares outstanding (in shares)	12,652,308	12,560,990

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Face amount or stated value per share of common stock.

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