Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Mar. 31, 2016	Dec. 31, 2015
Equity:
Preferred stock, par value (usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	200,000,000	200,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Class A Common Stock
Equity:
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	130,662,036	127,026,839
Common stock, shares outstanding	130,662,036	127,026,839
Healthcare Trust of America Holdings, LP (HTALP)
Partners’ Capital:
Limited partner's capital, units issued	1,833,849	1,929,942
Limited partner's capital, units outstanding	1,833,849	1,929,942
General partner's capital, units issued	130,662,036	127,026,839
General partner's capital, units outstanding	130,662,036	127,026,839