License Agreement (Details)	1 Months Ended
	Jan. 31, 2015 USD ($) shares
Other Commitments [Line Items]
Shares issued as consideration of license agreement | shares	2,100,085
ZIOPHARM Oncology, Inc.
Other Commitments [Line Items]
Annual funding commitment, term	3 years
ZIOPHARM Oncology, Inc. | Minimum
Other Commitments [Line Items]
Annual funding commitment, amount	$ 15,000,000
ZIOPHARM Oncology, Inc. | Maximum
Other Commitments [Line Items]
Annual funding commitment, amount	20,000,000
Research and development
Other Commitments [Line Items]
Payment of license fees	$ 59,579,000