Schedule II-Valuation and Qualifying Accounts (Details) (Allowance for Doubtful Accounts [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013		Dec. 31, 2012
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 601	$ 691	[1]	$ 496	[1]
Additions Charged to Operations or Other Accounts	(112)	142		590	[1]
Write-offs, net of recoveries	(46)	(232)		(395)	[1]
Balance at End of Period	$ 443	$ 601		$ 691	[1]

[1] Activity in 2012 includes the addition of eBioscience since the Acquisition Date