The Company and Summary of Significant Accounting Policies (Details) (USD $)	1 Months Ended	3 Months Ended		135 Months Ended
	Mar. 04, 2013	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013
Company Development Stage and Basis of Presentation (Textual) [Abstract]
Anticipated time to start AF Trial		6 months
Loss from operations		$ (1,070,000)	$ (1,406,000)	$ (100,213,000)
Cash flows from operations		(764,000)	(1,656,000)	(98,185,000)
Fund raised through sale of common stock		1,741,000		15,850,000
Reverse stock split	1 for 6 reverse split
Revenue generated by the company		0
2013 Equity Financings
Company Development Stage and Basis of Presentation (Textual) [Abstract]
Fund raised through sale of common stock		$ 1,400,000
Minimum
Company Development Stage and Basis of Presentation (Textual) [Abstract]
Number of patients company plans to enroll		200
Maximum
Company Development Stage and Basis of Presentation (Textual) [Abstract]
Number of patients company plans to enroll		420