CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (139,995)	$ (17,460)	$ (152,542)	$ (36,129)
Other comprehensive income (loss)
Foreign currency translation adjustments related to investment in unconsolidated venture	186	(1,074)	(858)	(874)
Total other comprehensive income (loss)	186	(1,074)	(858)	(874)
Comprehensive income (loss)	(139,809)	(18,534)	(153,400)	(37,003)
Comprehensive (income) loss attributable to non-controlling interests	714	314	780	366
Comprehensive income (loss) attributable to NorthStar Healthcare Income, Inc. common stockholders	$ (139,095)	$ (18,220)	$ (152,620)	$ (36,637)