Fair Value Measurements Level 3 Liabilities (Details) - USD ($) $ in Thousands			6 Months Ended	12 Months Ended
	Nov. 07, 2014	Jun. 02, 2014	Jun. 30, 2015	Dec. 31, 2014
Recurring [Member] | Level 3 [Member]
Business Combination, Contingent Consideration Arrangements, Change In Contingent Consideration Liability [Roll Forward]
Balance, Beginning of Period			$ 6,940	$ 1,660
Cash payment			(433)	(750)
Balance, End of Period			5,847	6,940
Synchronite, LLC [Member]
Business Combination, Contingent Consideration Arrangements, Change In Contingent Consideration Liability [Roll Forward]
Balance, End of Period		$ 1,800
Synchronite, LLC [Member] | Recurring [Member] | Level 3 [Member]
Business Combination, Contingent Consideration Arrangements, Change In Contingent Consideration Liability [Roll Forward]
Synchronite addition			0	1,810
Contact At Once! [Member]
Business Combination, Contingent Consideration Arrangements, Change In Contingent Consideration Liability [Roll Forward]
Balance, End of Period	$ 4,200
Contact At Once! [Member] | Recurring [Member] | Level 3 [Member]
Business Combination, Contingent Consideration Arrangements, Change In Contingent Consideration Liability [Roll Forward]
Synchronite addition			$ 0	$ 4,220
Contingent Earn-Out [Member] | Synchronite, LLC [Member] | Recurring [Member] | Level 3 [Member]
Business Combination, Contingent Consideration Arrangements, Change In Contingent Consideration Liability [Roll Forward]
Synchronite addition		$ 1,800
Contingent Earn-Out [Member] | Contact At Once! [Member] | Recurring [Member] | Level 3 [Member]
Business Combination, Contingent Consideration Arrangements, Change In Contingent Consideration Liability [Roll Forward]
Synchronite addition	$ 4,200