Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets:
Deferred leasing costs, accumulated amortization	$ 151,698	$ 146,125
Prepaid expenses and other assets, accumulated amortization	$ 21,154	$ 20,017
Equity/Capital:
Preferred Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred Stock, authorized shares (in shares)	50,000,000	50,000,000
Preferred Stock, liquidation preference (in dollars per share)	$ 1,000	$ 1,000
Preferred Stock, shares issued (in shares)	28,826	28,859
Preferred Stock, shares outstanding (in shares)	28,826	28,859
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, authorized shares (in shares)	200,000,000	200,000,000
Common Stock, shares issued (in shares)	103,921,546	103,756,046
Common Stock, shares outstanding (in shares)	103,921,546	103,756,046
Highwoods Realty Limited Partnership [Member]
Assets:
Deferred leasing costs, accumulated amortization	$ 151,698	$ 146,125
Prepaid expenses and other assets, accumulated amortization	$ 21,154	$ 20,017
Redeemable Operating Partnership Units:
Redeemable Common Units, outstanding (in shares)	2,838,725	2,723,703
Preferred Units liquidation preference (in dollars per share)	$ 1,000	$ 1,000
Series A Preferred Units, issued (in shares)	28,826	28,859
Series A Preferred Units, outstanding (in shares)	28,826	28,859
Common Units:
General partners' capital account, units outstanding (in shares)	1,063,515	1,060,709
Limited partners' capital account, units outstanding (in shares)	102,449,222	102,286,528