CONDENSED CONSOLIDATED STATEMENTS OF EQUITY UNAUDITED (USD $) In Thousands	Noncontrolling Interests [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Comprehensive Income [Member]	Treasury Stock [Member]	Total	Redeemable Noncontrolling Interests [Member]
Balance at Dec. 31, 2011	$ 3,439	$ 33	$ 264,409	$ 409,191	$ 22,520	$ (292,181)	$ 407,411	$ 6,071
Redemptions of redeemable noncontrolling interests	0	0	0	0	0	0	0	(8,566)
Contributions from redeemable noncontrolling interests	0	0	0	0	0	0	0	22,662
Net income	(78)	0	0	57,945	0	0	57,867	61
Net unrealized gains on securities available for sale, net of tax	0	0	0	0	3,816	0	3,816	0
Foreign currency translation	0	0	0	0	(29)	0	(29)	0
Dividends declared	0	0	0	(16,810)	0	0	(16,810)	0
Stock based compensation expense	0	0	2,615	0	0	0	2,615	0
Exercise of stock options including tax benefit	0	0	890	0	0	0	890	0
Purchase of treasury stock	0	0	0	0	0	(12,386)	(12,386)	0
Balance at Sep. 30, 2012	3,361	33	267,914	450,326	26,307	(304,567)	443,374	20,228
Balance at Dec. 31, 2012	3,326	33	280,089	408,295	26,300	(347,109)	370,934	17,362
Redemptions of redeemable noncontrolling interests	(524)	0	0	0	0	0	(524)	(15,356)
Contributions from redeemable noncontrolling interests	0	0	0	0	0	0	0	3,486
Net income	(13)	0	0	83,536	0	0	83,523	273
Net unrealized gains on securities available for sale, net of tax	0	0	0	0	9,331	0	9,331	0
Amount reclassed out of accumulated other comprehensve income, net of income tax benefit	0	0	0	0	(12,361)	0	(12,361)	0
Foreign currency translation	0	0	0	0	1	0	1	0
Dividends declared	0	0	0	(4,129)	0	0	(4,129)	0
Stock based compensation expense	0	0	770	0	0	0	770	0
Exercise of stock options including tax benefit	0	0	92	0	0	0	92	0
Purchase of treasury stock	0	0	0	0	0	(9,234)	(9,234)	0
Balance at Sep. 30, 2013	$ 2,789	$ 33	$ 281,194	$ 487,702	$ 23,271	$ (356,343)	$ 438,646	$ 5,765