Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Shares	Additional Paid-in Capital	Treasury Shares	Accumulated Other Comprehensive Loss	Retained Earnings	Noncontrolling Interests
Beginning Balance at Dec. 31, 2017	$ 822,899	$ 96	$ 224,622	$ (40,312)	$ (2,700)	$ 633,496	$ 7,697
Increase (Decrease) in Stockholders' Equity
Net income (loss)	41,225					41,484	(259)
Other comprehensive loss	(3,687)				(3,687)
Cash received from (paid to) noncontrolling interest, net	36,736		(2,268)				39,004
Cumulative adjustment for adoption of leasing standard, net	(7,818)					(7,818)
Stock awards, stock option exercises and other shares issued to employees and directors, net of income tax	6,913		2,042	4,871
Dividends declared	(19,504)					(19,504)
Restricted share award dividend equivalents	0			141		(141)
Ending Balance at Dec. 31, 2018	876,764	96	224,396	(35,300)	(6,387)	647,517	46,442
Increase (Decrease) in Stockholders' Equity
Net income (loss)	15,060					18,307	(3,247)
Other comprehensive loss	(844)
Other comprehensive loss	(12,734)				(12,734)
Amounts reclassified from accumulated other comprehensive loss	11,890				11,890
Cash received from (paid to) noncontrolling interest, net	4,879		164				4,715
Noncontrolling interests recognized in connection with business combination	179,247		5,112				174,135
Cumulative adjustment for adoption of leasing standard, net	(550)					(550)
Stock awards, stock option exercises and other shares issued to employees and directors, net of income tax	15,587		(12,121)	27,708
Dividends declared	(22,329)					(22,329)
Shares issued for acquisition	127,841	41	127,800
Restricted share award dividend equivalents	0		8	250		(258)
Ending Balance at Dec. 31, 2019	1,195,655	137	345,359	(7,342)	(7,231)	642,687	222,045
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(14,215)					7,710	(21,925)
Other comprehensive loss	(4,845)
Other comprehensive loss	(10,213)				(10,213)
Amounts reclassified from accumulated other comprehensive loss	5,368				5,368
Cash received from (paid to) noncontrolling interest, net	8,576						8,576
Distributions to noncontrolling interests	(10,322)						(10,322)
Noncontrolling interests recognized in connection with business combination	(64)		(459)				395
Stock awards, stock option exercises and other shares issued to employees and directors, net of income tax	8,939	1	3,814	5,968		(844)
Dividends declared	(23,064)					(23,064)
Restricted share award dividend equivalents	0			408		(408)
Ending Balance at Dec. 31, 2020	$ 1,160,660	$ 138	$ 348,714	$ (966)	$ (12,076)	$ 626,081	$ 198,769