Debt (Details) - 2013 Secured Credit Facility - Wells Fargo			1 Months Ended
	Apr. 11, 2017 USD ($)	Mar. 31, 2016 USD ($) annual_installment	Mar. 31, 2016 USD ($) annual_installment	Mar. 31, 2018 USD ($)	Oct. 31, 2016 USD ($)
Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity		$ 25,000,000.0	$ 25,000,000.0		$ 25,000,000.0
Line of credit facility, increase to borrowing capacity (up to)		$ 25,000,000.0	$ 25,000,000.0
Line of credit facility, maximum borrowing capacity as a percentage of the Company's trailing twelve-month recurring revenues		75.00%	75.00%
Line of credit facility, initial closing fee, number of annual installments | annual_installment		3	3
Line of credit facility, initial closing fee, repayment period			3 years
Payment of outstanding balance on credit facility	$ 100,000
Line of Credit | U.S. Federal Funds Rate
Line of Credit Facility [Line Items]
Basis spread on variable interest rate		1.00%
Line of Credit | One Month LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable interest rate		1.00%
Letter of Credit
Line of Credit Facility [Line Items]
Secured letters of credit amount				$ 1,000,000