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Summary of Significant Accounting Policies Significant Accounting Policies (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Summary of Significant Accounting Policies [Line Items]
Unamortized Debt Issuance Expense	$ 200,000
Treasury money market funds, at fair value	26,700,000		21,000,000
Internal-use software development costs capitalized	730,000	796,000
Effective income tax rate	6.00%	(196.00%)
Discrete tax benefit related to R&D credit		1,400,000
Federal statutory income tax rate	34.00%
Amortization of Financing Costs	12,500
Line of Credit Facility, Amount Outstanding	0
Cloud-based product offerings [Member]
Summary of Significant Accounting Policies [Line Items]
Internal-use software development costs capitalized	700,000	900,000
Capitalized Computer Software, Amortization	$ 100,000
Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years

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