Schedule II -- Valuation and Qualifying Accounts (Consolidated) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for Doubtful Accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 5,703	$ 5,307	$ 5,518
Charged to expense or other accounts	198	661	367
Deductions	(55)	(265)	(578)
Balance at end of period	5,846	5,703	5,307
Valuation Allowance for Deferred Tax Asset
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	77,629	76,452	72,327
Charged to expense or other accounts	2,235	3,218	4,125
Deductions	(33,816)	(2,041)	0
Balance at end of period	$ 46,048	$ 77,629	$ 76,452