Condensed Consolidated Statement of Equity (unaudited) - 3 months ended Mar. 31, 2017 - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Company Shares Held by SERP [Member]	Retained Earnings [Member]	Non-controlling Interest [Member]	Total
Balance at Dec. 31, 2016	$ 4,609	$ 139,970	$ (31,562)	$ (1,958)	$ 536,771	$ 1,011	$ 648,841
Balance (in shares) at Dec. 31, 2016	23,046
Net income	$ 0	0	0	0	15,120	(40)	15,080
Other comprehensive income	0	0	2,030	0	0	0	2,030
Change in ownership percent of subsidiary	0	0	0	0	0	184	184
Dividends declared	0	2	0	0	(2,308)	0	(2,306)
Stock-based compensation	$ 0	567	0	0	0	0	567
Stock-based compensation (in shares)	0
Stock issued under incentive plans	$ 3	(3)	0	0	0	0	0
Stock issued under incentive plans (in shares)	14
Withholding tax paid upon vesting of RSUs	$ 0	(501)	0	0	0	0	(501)
SERP transactions, net	0	162	0	123	0	0	285
Other	0	0	0	0	0	170	170
Balance at Mar. 31, 2017	$ 4,612	$ 140,197	$ (29,532)	$ (1,835)	$ 549,583	$ 1,325	$ 664,350
Balance (in shares) at Mar. 31, 2017	23,060