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, 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
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
Balance at Jun. 30, 2013
Amount reclassed out of accumulated other comprehensve income, net of income tax benefit	0	0	0	0	(12,361)	0	(12,361)	0
Income tax effect of transaction with shareholders	0	0	243	0	0	0	243	0
Foreign currency translation							49
Balance at Sep. 30, 2013	2,789	33	281,194	487,702	23,271	(356,343)	438,646	5,765
Balance at Dec. 31, 2013	2,851	33	282,496	506,441	30,239	(361,878)	460,182	6,751
Redemptions of redeemable noncontrolling interests	0	0	0	0	0	0	0	(1,666)
Contributions from redeemable noncontrolling interests	0	0	0	0	0	0	0	53,607
Net income	(112)	0	0	80,569	0	0	80,457	(2,606)
Net unrealized gains on securities available for sale, net of tax	0	0	0	0	(2,371)	0	(2,371)	0
Amount reclassed out of accumulated other comprehensve income, net of income tax benefit	0	0	0	0	(4,461)	0	(4,461)	0
Foreign currency translation	0	0	0	0	(15)	0	(15)	0
Dividends declared	0	0	0	(4,653)	0	0	(4,653)	0
Stock based compensation expense	0	0	5,182	0	0	0	5,182	0
Exercise of stock options including tax benefit	0	0	1,986	0	0	0	1,986	0
Purchase of treasury stock	0	0	0	0	0	(25,074)	(25,074)	0
Balance at Sep. 30, 2014	$ 2,739	$ 33	$ 289,664	$ 582,357	$ 23,392	$ (386,952)	$ 511,233	$ 56,086