Business Combinations - Additional Information (Detail)				1 Months Ended	3 Months Ended			6 Months Ended		12 Months Ended
	Dec. 21, 2015 USD ($)	Aug. 17, 2015 USD ($)	Mar. 13, 2015 USD ($)	Mar. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Jun. 30, 2016 USD ($) Earnout_Period	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Business Acquisition [Line Items]
Increase in total purchase price					$ (928,000)			$ (928,000)
Direct acquisition costs								430,000	$ 611,000
Payment of contingent earnout consideration								$ 3,226,000
M2 Dynamics [Member]
Business Acquisition [Line Items]
Acquisition date								Dec. 21, 2015
Purchase price consideration	$ 19,800,000
Initial cash consideration	16,100,000							$ 93,000
Working capital adjustment	596,000
Increase in total purchase price	3,000,000
Increase in carrying value of goodwill						$ 93,000
Business combination, contingent earnout considerations accrual					3,500,000			$ 3,500,000
Earnout period								1 year
Earnout consideration								$ 6,600,000
Direct transaction costs					1,200,000			1,200,000
Direct acquisition costs						$ 430,000	$ 801,000
Business combination revenue recorded					3,300,000			6,200,000
Non-cash expenses associated with amortization of purchased intangible assets and accretion of contingent earnout consideration					740,000			1,500,000
Business combination net income (loss) recorded					134,000			$ 35,000
Purchase price consideration	$ 19,868,000
Branchbird [Member]
Business Acquisition [Line Items]
Acquisition date								Aug. 17, 2015
Purchase price consideration		$ 4,200,000
Initial cash consideration		2,700,000
Working capital adjustment		19,000
Increase in total purchase price		1,400,000
Business combination, contingent earnout considerations accrual					899,000			$ 899,000
Earnout period								1 year
Earnout consideration		2,400,000
Direct acquisition costs										$ 340,000
Number of consecutive earnout period | Earnout_Period								2
Purchase price consideration		$ 4,183,000
Branchbird [Member] | Restatement Adjustment [Member]
Business Acquisition [Line Items]
Increase in total purchase price					798,000
Zero2Ten [Member]
Business Acquisition [Line Items]
Acquisition date								Mar. 13, 2015
Initial cash consideration			$ 4,500,000						$ 4,645,000
Working capital adjustment			457,000
Increase in total purchase price			4,400,000
Earnout period								1 year
Direct acquisition costs										$ 613,000
Number of consecutive earnout period | Earnout_Period								2
Purchase price consideration			9,010,000
Gross cash consideration			$ 5,000,000
Business combination, accrued contingent earnout considerations reversed					130,000			$ 130,000
Remaining earnout consideration					4,300,000			4,300,000
Zero2Ten [Member] | First Earnout Period [Member]
Business Acquisition [Line Items]
Earnout period completed				12 months
Payment of contingent earnout consideration				$ 3,900,000
Zero2Ten [Member] | Second Earnout Period [Member]
Business Acquisition [Line Items]
Business combination, contingent earnout considerations accrual					$ 2,600,000			$ 2,600,000
Earnout period completed								12 months