Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Sep. 16, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Summary Of Significant Accounting Policies [Line Items]
Variable interest entity			No	No	No
Maturity period of demand and money market accounts and short term investments			Three months or less
Depreciation expense			$ 706,906	$ 429,498	$ 382,829
Goodwill impairment identified			0	0	0
Intangible asset impairment			0	0	0
Fair value of assets	$ 0		0	0	0
Fair value of liabilities	$ 0		$ 0	0	0
Subscription contractual period			1 year
Company's share of Mobiuss revenue	100.00%	50.00%
ASU 2016-09 [Member]
Summary Of Significant Accounting Policies [Line Items]
Additional non-current deferred tax asset amount			$ 657,000
Minimum [Member] | Furniture and Fixtures [Member]
Summary Of Significant Accounting Policies [Line Items]
Expected useful life of assets			3 years
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Subscription contractual period			48 months
Maximum [Member] | Furniture and Fixtures [Member]
Summary Of Significant Accounting Policies [Line Items]
Expected useful life of assets			10 years
Customer Relationships [Member]
Summary Of Significant Accounting Policies [Line Items]
Intangible assets, amortization period			15 years
Web Site Development [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Intangible assets, amortization period			3 years
Database [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Intangible assets, amortization period			3 years
Database [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Intangible assets, amortization period			5 years
General and Administrative Expense [Member]
Summary Of Significant Accounting Policies [Line Items]
Depreciation expense			$ 707,000	$ 429,000	$ 383,000