Debt (Tables)

12 Months Ended

Dec. 31, 2011

Debt [Abstract]

Long-term debt

	2010		2011
Parent company
8% unsecured notes due December 2019	$	173,578	$	173,578
7.625% unsecured notes due March 2027		116,880		116,880
Capitalized leases and other		10,481		9,862
		300,939		300,320
Subsidiaries
5.13% unsecured notes due in 2011		5,285		—
5.795% to 6.3175% unsecured notes due in 2012		20,385		20,599
6.10% to 6.65% unsecured notes due in 2014		—		26,528
2.25% unsecured notes due in 2016		—		3,248
		25,670		50,375
		326,609		350,695
Less current maturities		5,885		21,199
	$	320,724	$	329,496