Fair Value of Financial Instruments - Schedule of Unobservable Inputs (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income Approach Valuation Technique
Fair Value Inputs, Equity, Quantitative Information [Line Items]
Probability of redemption, private company		12.50%
Market Approach Valuation Technique
Fair Value Inputs, Equity, Quantitative Information [Line Items]
Probability of redemption, private company		12.50%
Probability Weighted Expected Return Method
Fair Value Inputs, Equity, Quantitative Information [Line Items]
PWERM (IPO)		56.30%
PWERM (M&A)		18.80%
Minimum
Fair Value Inputs, Equity, Quantitative Information [Line Items]
IPO revenue multiple	3.0	4.0
Forecasted revenue growth rate	28.00%	30.00%
Discount rate	20.00%	20.00%
Minimum | Income Approach Valuation Technique
Fair Value Inputs, Equity, Quantitative Information [Line Items]
Probability of redemption, private company	12.50%
Minimum | Market Approach Valuation Technique
Fair Value Inputs, Equity, Quantitative Information [Line Items]
Probability of redemption, private company	12.50%
Minimum | Probability Weighted Expected Return Method
Fair Value Inputs, Equity, Quantitative Information [Line Items]
PWERM (IPO)	52.50%
PWERM (M&A)	15.00%
Maximum
Fair Value Inputs, Equity, Quantitative Information [Line Items]
IPO revenue multiple	4.5	5.0
Forecasted revenue growth rate	41.80%	50.30%
Discount rate	30.00%	30.00%
Maximum | Income Approach Valuation Technique
Fair Value Inputs, Equity, Quantitative Information [Line Items]
Probability of redemption, private company	15.00%
Maximum | Market Approach Valuation Technique
Fair Value Inputs, Equity, Quantitative Information [Line Items]
Probability of redemption, private company	15.00%
Maximum | Probability Weighted Expected Return Method
Fair Value Inputs, Equity, Quantitative Information [Line Items]
PWERM (IPO)	60.00%
PWERM (M&A)	17.50%