CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock Issued	Common Stock Treasury	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Balances at Dec. 31, 2013	$ 597,555	$ 140,248	$ (746,237)	$ 159,025	$ 1,372,041	$ (370,615)	$ 43,093
Increase (Decrease) in Stockholders' Equity
Net income	25,144				22,196		2,948
Cash dividends declared:
Common @ $0.615 per share	(49,763)				(49,763)
Noncontrolling interests	(2,319)						(2,319)
Total other comprehensive income (loss), net of deferred income taxes of $(5,529) and $2,939 in 2015 and 2014, respectively	(826)					243	(1,069)
Contributions from noncontrolling interests	1,560						1,560
Noncontrolling interests transferred in the Infrastructure Transaction	(905)						(905)
Vesting of restricted stock units and other, net 31,147 shares and 130,603 shares in 2015 and 2014, respectively	1,550	195	(712)	2,067
Amortization of unearned portion of stock-based compensation, net of forfeitures	3,881			3,881
Balances at Sep. 30, 2014	575,877	140,443	(746,949)	164,973	1,344,474	(370,372)	43,308
Balances at Dec. 31, 2014	351,910	140,444	(749,815)	165,666	1,283,549	(532,256)	44,322
Increase (Decrease) in Stockholders' Equity
Net income	14,108				13,183		925
Cash dividends declared:
Common @ $0.615 per share	(49,247)				(49,247)
Noncontrolling interests	(1,559)						(1,559)
Total other comprehensive income (loss), net of deferred income taxes of $(5,529) and $2,939 in 2015 and 2014, respectively	(36,842)					(34,647)	(2,195)
Contributions from noncontrolling interests	2,100						2,100
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	(398)			(3)			(395)
Sale of investment in consolidated subsidiary	200						200
Vesting of restricted stock units and other, net 31,147 shares and 130,603 shares in 2015 and 2014, respectively	(304)	59	(264)	(99)
Treasury shares repurchased, 596,632 shares	(10,220)		(10,220)
Amortization of unearned portion of stock-based compensation, net of forfeitures	3,545			3,545
Balances at Sep. 30, 2015	$ 273,293	$ 140,503	$ (760,299)	$ 169,109	$ 1,247,485	$ (566,903)	$ 43,398