Condensed Consolidated Statement of Equity (unaudited) (USD $) In Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Company Shares held by SERP [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2012	$ 4,560	$ 133,809	$ 502	$ (2,855)	$ 410,338	$ 1,644	$ 547,998
Balance (in shares) at Dec. 31, 2012	22,799
Net income	0	0	0	0	24,263	140	24,403
Other comprehensive income	0	0	(5,366)	0	0	(397)	(5,763)
Dividends declared					(2,285)		(2,285)
Change in ownership percentage of subsidiaries	0	0	0	0	0	1,897	1,897
Stock-based compensation	1	642	0	0	0	0	643
Stock-based compensation (in shares)	3
Stock issued under incentive plans	9	(7)	0	0	0	0	2
Stock issued under incentive plans (in shares)	50
Withholding tax paid upon vesting of RSUs	0	(783)	0	0	0	0	(783)
SERP transactions, net	0	11	0	(101)	0	0	(90)
Balance at Jun. 30, 2013	$ 4,570	$ 133,672	$ (4,864)	$ (2,956)	$ 432,316	$ 3,284	$ 566,022
Balance (in shares) at Jun. 30, 2013	22,852