Sponsored Research and Clinical Trial Agreements - summary of Helocyte's expense related to its clinical research arrangements (Detail)

v3.10.0.1

Sponsored Research and Clinical Trial Agreements - summary of Helocyte's expense related to its clinical research arrangements (Detail) - Helocyte Inc [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Payments For Research And Development Expenses	$ 113	$ 1,639	$ 317	$ 2,920
COH Triplex Clinical Research and Support [Member]
Payments For Research And Development Expenses	0	1,300	0	2,335
COH PepVax Clinical Research And Support [Member]
Payments For Research And Development Expenses	0	327	0	561
COH Pentamer clinical research and support [Member]
Payments For Research And Development Expenses	$ 113	$ 12	$ 317	$ 24