CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
Equity:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	200,000,000	200,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Healthcare Trust of America Holdings, LP (HTALP)
Partners’ Capital:
Limited partner's capital, units issued (in shares)	3,910,767	3,929,083
Limited partner's capital, units outstanding (in shares)	3,910,767	3,929,083
General partner's capital, units issued (in shares)	205,099,708	205,267,349
General partner's capital, units outstanding (in shares)	205,099,708	205,267,349
Class A Common Stock
Equity:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	205,099,708	205,267,349
Common stock, shares outstanding (in shares)	205,099,708	205,267,349