Significant Accounting Policies, Revenue Recognition (Details)	3 Months Ended
	Mar. 31, 2015 Type	Mar. 31, 2014
Revenue by Type [Line Items]
Payment terms, maximum	90 days
Number of types of offerings	4
Services breakage revenue (in hundredths)	0.00%	3.00%
Refund period for channel partners, minimum	5 days
Refund period for channel partners, maximum	14 days
Refund period for referral programs and direct transactions	5 days
Money back guarantee period for software products	30 days
Channel Sales [Member] | Minimum [Member]
Revenue by Type [Line Items]
Refund period for channel partners, minimum	5 days
Refund period for channel partners, maximum	14 days
Refund period for referral programs and direct transactions	5 days
Money back guarantee period for software products	30 days