Schedule II Schedule of Valuation and Qualifying Accounts (Details) (Allowance for Doubtful Accounts, 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 Year	$ 331		$ 230		$ 138
Charged to Costs and Expenses	307		218		193
Deductions and Other	(249)	[1]	(117)	[1]	(101)	[1]
Balance at End of Year	$ 389		$ 331		$ 230

[1] Primarily represents write-offs of uncollectible accounts, net of recoveries.