Subsequent Events (Details) (USD $)	3 Months Ended	6 Months Ended					0 Months Ended	3 Months Ended
	Jul. 10, 2014	Jun. 30, 2014	Jun. 13, 2014	May 21, 2014	May 06, 2014	Apr. 29, 2014	Jul. 10, 2014 Subsequent Events	Jul. 10, 2014 Subsequent Events
Subsequent events
Proceeds from private placement	$ 35,600,000						$ 200,000	$ 35,600,000
Net proceeds from private placement after payment commission and fees	31,300,000						179,500	31,300,000
Commission and fees paid							$ 20,500
Number of shares of common stock issued in private placement		8,845,685						8,895,685
Number of warrants issued in private placement								2,668,706
Number of shares of common stock to be purchased							0.3	0.3
Purchase price of each common stock/warrant (in dollars per unit)	$ 4.00		$ 4.00	$ 4.00	$ 4.00	$ 4.00	$ 4.00	$ 4.00
Initial exercise price of warrants (in dollars per share)							$ 4.80	$ 4.80