Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance For Doubtful Accounts Receivable Rollforward [Line Items]
Allowance for Doubtful Accounts, Balance at Beginning of Period	$ 395	$ 578	$ 577
Charged to Costs and Expenses	339	139	293
Allowance From Acquisitions	99	0	0
Write Off of Uncollectible Accounts, Net of Recoveries	(169)	(322)	(292)
Allowance for Doubtful Accounts, Balance at End of Period	$ 664	$ 395	$ 578