Statement of Changes in Convertible Preferred Stock (Series A redeemable convertible preferred stock) - USD ($)		3 Months Ended	12 Months Ended
		Mar. 31, 2015	Dec. 31, 2014
Increase (decrease) in temporary equity
Balance	[1]	$ 7,304,914
Balance		7,492,000	$ 7,304,914	[1]
Series A redeemable convertible preferred stock
Increase (decrease) in temporary equity
Balance		$ 7,304,914
Balance (in shares)		3,015,902
Issuance of redeemable convertible preferred stock, net			$ 6,658,241
Issuance of redeemable convertible preferred stock, net (in shares)			3,015,902
Deemed dividends on redeemable convertible preferred stock		$ 177,297	$ 610,889
Accretion of issuance costs to liquidity amount		9,789	35,784
Balance		$ 7,492,000	$ 7,304,914
Balance (in shares)		3,015,902	3,015,902

[1] The condensed balance sheet at December 31, 2014 is derived from the audited financial statements at that date included in the Company's prospectus filed with the Securities and Exchange Commission pursuant to rule 424 (b)(4)on May 14, 2015.