CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 25,673,000	$ 8,148,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and other	135,177,000	100,536,000
Share-based compensation expense	5,703,000	3,839,000
Impairment	4,606,000	5,093,000
Income from unconsolidated joint venture	(973,000)	(63,000)
Distributions from unconsolidated joint venture	975,000	0
Gain on sale of real estate, net	0	(3,000)
Loss on extinguishment of debt, net	0	10,418,000
Change in fair value of derivative financial instruments	0	(884,000)
Changes in operating assets and liabilities:
Receivables and other assets, net	(2,956,000)	(2,742,000)
Accounts payable and accrued liabilities	(13,254,000)	14,272,000
Prepaid rent and other liabilities	1,157,000	1,907,000
Net cash provided by operating activities	156,108,000	140,521,000
Cash flows from investing activities:
Investments in real estate	(11,887,000)	(2,202,815,000)
Investment in unconsolidated joint venture	0	(68,839,000)
Development of real estate	(23,861,000)	(348,000)
Proceeds from the sale of real estate	0	4,746,000
Capital expenditures	(34,110,000)	(26,022,000)
Collection of real estate notes receivable	347,000	0
Net cash used in investing activities	(69,511,000)	(2,293,278,000)
Cash flows from financing activities:
Borrowings on unsecured revolving credit facility	85,000,000	305,000,000
Payments on unsecured revolving credit facility	(85,000,000)	(393,000,000)
Proceeds from unsecured senior notes	0	900,000,000
Payments on secured mortgage loans	(99,218,000)	(74,319,000)
Deferred financing costs	0	(9,400,000)
Debt extinguishment costs	0	(10,391,000)
Security deposits	222,000	1,964,000
Proceeds from issuance of common stock	72,814,000	1,624,222,000
Repurchase and cancellation of common stock	(11,553,000)	(3,339,000)
Dividends paid	(125,128,000)	(85,683,000)
Distributions paid to noncontrolling interest of limited partners	(2,689,000)	(2,722,000)
Net cash (used in) provided by financing activities	(165,552,000)	2,252,332,000
Net change in cash, cash equivalents and restricted cash	(78,955,000)	99,575,000
Cash, cash equivalents and restricted cash - beginning of period	118,560,000	25,045,000
Cash, cash equivalents and restricted cash - end of period	39,605,000	124,620,000
Healthcare Trust of America Holdings, LP (HTALP)
Cash flows from operating activities:
Net income	25,673,000	8,148,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and other	135,177,000	100,536,000
Share-based compensation expense	5,703,000	3,839,000
Impairment	4,606,000	5,093,000
Income from unconsolidated joint venture	(973,000)	(63,000)
Distributions from unconsolidated joint venture	975,000	0
Gain on sale of real estate, net	0	(3,000)
Loss on extinguishment of debt, net	0	10,418,000
Change in fair value of derivative financial instruments	0	(884,000)
Changes in operating assets and liabilities:
Receivables and other assets, net	(2,956,000)	(2,742,000)
Accounts payable and accrued liabilities	(13,254,000)	14,272,000
Prepaid rent and other liabilities	1,157,000	1,907,000
Net cash provided by operating activities	156,108,000	140,521,000
Cash flows from investing activities:
Investments in real estate	(11,887,000)	(2,202,815,000)
Investment in unconsolidated joint venture	0	(68,839,000)
Development of real estate	(23,861,000)	(348,000)
Proceeds from the sale of real estate	0	4,746,000
Capital expenditures	(34,110,000)	(26,022,000)
Collection of real estate notes receivable	347,000	0
Net cash used in investing activities	(69,511,000)	(2,293,278,000)
Cash flows from financing activities:
Borrowings on unsecured revolving credit facility	85,000,000	305,000,000
Payments on unsecured revolving credit facility	(85,000,000)	(393,000,000)
Proceeds from unsecured senior notes	0	900,000,000
Payments on secured mortgage loans	(99,218,000)	(74,319,000)
Deferred financing costs	0	(9,400,000)
Debt extinguishment costs	0	(10,391,000)
Security deposits	222,000	1,964,000
Proceeds from issuance of general partner units	72,814,000	1,624,222,000
Repurchase and cancellation of general partner units	(11,553,000)	(3,339,000)
Distributions paid to general partner	(125,128,000)	(85,683,000)
Distributions paid to limited partners and redeemable noncontrolling interests	(2,689,000)	(2,722,000)
Net cash (used in) provided by financing activities	(165,552,000)	2,252,332,000
Net change in cash, cash equivalents and restricted cash	(78,955,000)	99,575,000
Cash, cash equivalents and restricted cash - beginning of period	118,560,000	25,045,000
Cash, cash equivalents and restricted cash - end of period	$ 39,605,000	$ 124,620,000