Consolidated Statements of Stockholders' Equity - USD ($)	Common stock	Additional paid-in Capital	Accumulated other comprehensive income (loss)	Accumulated deficit	Total
Balance at Dec. 31, 2014	$ 17	$ 6,208		$ (42,074,727)	$ (42,068,502)
Balance (in shares) at Dec. 31, 2014	166,469
Increase (Decrease) in Stockholders' Equity
Issuance of restricted common shares	$ 1	5			6
Issuance of restricted common shares (in shares)	9,689
Net loss				(6,844,863)	(6,844,863)
Balance at Dec. 31, 2015	$ 18	6,213		(48,919,590)	$ (48,913,359)
Balance (in shares) at Dec. 31, 2015	176,158				176,158
Increase (Decrease) in Stockholders' Equity
Issuance of restricted common shares	$ 21				$ 21
Issuance of restricted common shares (in shares)	208,255
Related party debt restructuring		11,224,294			11,224,294
Conversion of convertible notes and related accrued interest to common stock	$ 708	47,591,814			47,592,522
Conversion of convertible notes and related accrued interest to common stock (in shares)	7,087,186
Retirement of restricted stock	$ (1)	(5)			(6)
Retirement of restricted stock (in shares)	(9,689)
Acquisition of Synta	$ 403	38,236,075			38,236,478
Acquisition of Synta (in shares)	4,029,138
Issuance of shares to financial advisors in connection with Merger	$ 8	749,992			750,000
Issuance of shares to financial advisors in connection with Merger (in shares)	79,101
Issuance of common shares in equity offering, net of transaction costs	$ 38	5,953,794			5,953,832
Issuance of common shares in equity offering, net of transaction costs ( in shares)	381,717
Compensation related to share-based awards		7,929,174			7,929,174
Unrealized gain on available-for-sale securities			$ 25,404		25,404
Net loss				(26,387,858)	(26,387,858)
Balance at Dec. 31, 2016	$ 1,195	$ 111,691,351	$ 25,404	$ (75,307,448)	$ 36,410,502
Balance (in shares) at Dec. 31, 2016	11,951,866				11,951,866