Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets:
Mortgages and notes receivable allowance	$ 0	$ 44
Deferred leasing costs, accumulated amortization	146,125	149,275
Prepaid expenses and other assets, accumulated amortization	$ 20,017	$ 18,074
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)	28,859	28,877
Preferred Stock, shares outstanding (in shares)	29,000	29,000
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)	103,756,046	103,557,065
Common Stock, shares outstanding (in shares)	103,756,046	103,557,065
Highwoods Realty Limited Partnership [Member]
Assets:
Mortgages and notes receivable allowance	$ 0	$ 44
Deferred leasing costs, accumulated amortization	146,125	149,275
Prepaid expenses and other assets, accumulated amortization	$ 20,017	$ 18,074
Redeemable Operating Partnership Units:
Redeemable Common Units, outstanding (in shares)	2,723,703	2,738,703
Preferred Units liquidation preference (in dollars per share)	$ 1,000	$ 1,000
Series A Preferred Units, issued (in shares)	28,859	28,877
Series A Preferred Units, outstanding (in shares)	29,000	29,000
Common Units:
General partners' capital account, units outstanding (in shares)	1,060,709	1,058,870
Limited partners' capital account, units outstanding (in shares)	102,286,528	102,089,386