CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common stock	Capital in excess of par value	Cumulative net income	Cumulative dividends	Accumulated other comprehensive income/(loss)	UHT Shareholders' Equity
Balance at Dec. 31, 2014	$ 204,581	$ 133	$ 240,835	$ 531,595	$ (567,894)	$ (88)	$ 204,581
Balance, Shares at Dec. 31, 2014		13,302
Shares of Beneficial Interest:
Issued	513		513				513
Issued (in shares)		25
Partial settlement of dividend equivalent rights	(75)		(75)				(75)
Restricted stock-based compensation expense	427		427				427
Dividends ($2.64/share) in 2017, and ($2.60/share) in 2016 ($2.56/share) in 2015	(34,089)				(34,089)		(34,089)
Comprehensive income:
Net income	23,691			23,691			23,691
Unrealized gain (loss) on interest rate cap	(6)					(6)	(6)
Subtotal - comprehensive income	23,685			23,691		(6)	23,685
Balance at Dec. 31, 2015	195,042	$ 133	241,700	555,286	(601,983)	(94)	195,042
Balance, Shares at Dec. 31, 2015		13,327
Shares of Beneficial Interest:
Issued	13,508	$ 3	13,505				13,508
Issued (in shares)		272
Partial settlement of dividend equivalent rights	(30)		(30)				(30)
Restricted stock-based compensation expense	481		481				481
Dividends ($2.64/share) in 2017, and ($2.60/share) in 2016 ($2.56/share) in 2015	(35,138)				(35,138)		(35,138)
Comprehensive income:
Net income	17,215			17,215			17,215
Unrealized gain (loss) on interest rate cap	199					199	199
Subtotal - comprehensive income	17,414			17,215		199	17,414
Balance at Dec. 31, 2016	191,277	$ 136	255,656	572,501	(637,121)	105	191,277
Balance, Shares at Dec. 31, 2016		13,599
Shares of Beneficial Interest:
Issued	9,142	$ 1	9,141				9,142
Issued (in shares)		136
Restricted stock-based compensation expense	538		538				538
Dividends ($2.64/share) in 2017, and ($2.60/share) in 2016 ($2.56/share) in 2015	(36,054)				(36,054)		(36,054)
Comprehensive income:
Net income	45,619			45,619			45,619
Unrealized gain (loss) on interest rate cap	39					39	39
Subtotal - comprehensive income	45,658			45,619		39	45,658
Balance at Dec. 31, 2017	$ 210,561	$ 137	$ 265,335	$ 618,120	$ (673,175)	$ 144	$ 210,561
Balance, Shares at Dec. 31, 2017		13,735