Condensed Consolidated Statement of Equity (unaudited) - 6 months ended Jun. 30, 2016 - 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, 2015	$ 4,598	$ 137,883	$ (23,564)	$ (1,778)	$ 490,933	$ 1,786	$ 609,858
Balance (in shares) at Dec. 31, 2015	22,988
Net income (loss)	$ 0	0	0	0	35,935	(116)	35,819
Other comprehensive income (loss)	0	0	(1,126)	0	0	190	(936)
Dividends declared	0	4	0	0	(4,612)	0	(4,608)
Stock-based compensation	$ 0	1,020	0	0	0	0	1,020
Stock-based compensation (in shares)	1
Change in ownership percent of subsidiary	$ 0	0	0	0	0	(787)	(787)
Stock issued under incentive plans	$ 10	(10)	0	0	0	0	0
Stock issued under incentive plans (in shares)	52
Withholding tax paid upon vesting of RSUs	$ 0	(1,022)	0	0	0	0	(1,022)
SERP transactions, net	0	7	0	(105)	0	0	(98)
Cumulative effect of adopting ASU No. 2016-09	0	150	0	0	(95)	0	55
Other	0	0	0	0	0	273	273
Balance at Jun. 30, 2016	$ 4,608	$ 138,032	$ (24,690)	$ (1,883)	$ 522,161	$ 1,346	$ 639,574
Balance (in shares) at Jun. 30, 2016	23,041