SCHEDULE II - VALUATIONS AND QUALIFYING ACCOUNTS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance Beginning of Year	$ 1,606	$ 1,812	$ 2,810
Additions Charged to Cost & Expenses	1,581	795	1,351
Deductions Written Off as Uncollectible	493	(1,001)	(2,349)
Balance End of Year	$ 2,694	$ 1,606	$ 1,812