SCHEDULE II Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 1,773	$ 1,040	$ 1,630
Charged to (Reduction of) Costs and Expenses	670	1,253	680
Taken Against Allowance	(788)	(520)	(1,270)
Other (Deductions) Recoveries	0	0	0
Balance at End of Period	$ 1,655	$ 1,773	$ 1,040