Goodwill and Intangible Assets (Changes in Carrying Amount of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified										6 Months Ended		6 Months Ended			12 Months Ended		12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2014 Business [Member]	Dec. 31, 2013 Business [Member]	Dec. 31, 2012 Business [Member]	Jun. 30, 2014 Consumer [Member]	Dec. 31, 2013 Consumer [Member]	Dec. 31, 2012 Consumer [Member]	Jun. 30, 2014 NexGraph, LLC [Member]	Mar. 31, 2014 NexGraph, LLC [Member]	Jun. 30, 2014 NexGraph, LLC [Member] Business [Member]	Jun. 30, 2014 Synchronite, LLC [Member]	Jun. 30, 2014 Synchronite, LLC [Member] Business [Member]	Dec. 31, 2013 Engage Pty Ltd. [Member]	Nov. 09, 2012 Engage Pty Ltd. [Member]	Dec. 31, 2013 Engage Pty Ltd. [Member] Business [Member]
Goodwill [Roll Forward]
Beginning Balance	$ 35,783	$ 32,724	$ 32,645	$ 27,759	$ 24,700	$ 24,621	$ 8,024	$ 8,024	$ 8,024		$ 400					$ 6,152
Goodwill acquisitions										400		400	2,659	2,659	79		79
Ending Balance	$ 35,783	$ 32,724	$ 32,645	$ 27,759	$ 24,700	$ 24,621	$ 8,024	$ 8,024	$ 8,024		$ 400		$ 2,650			$ 6,152