Business Combinations - Additional Information (Detail)				1 Months Ended	3 Months Ended			12 Months Ended
	Dec. 21, 2015 USD ($)	Aug. 17, 2015 USD ($)	Mar. 13, 2015 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($) Earnout_Period	Dec. 31, 2015 USD ($)
Business Acquisition [Line Items]
Business combination, contingent earnout considerations accrual									$ 3,468,000
Increase in total purchase price								$ (725,000)
Direct acquisition costs								430,000	1,754,000
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	16,736,000
Working capital adjustment	596,000
Initial cash consideration increased	3,000,000
Increase in carrying value of goodwill							$ 93,000	$ 73,000
Earnout period								1 year
Earnout consideration								$ 6,600,000
Business combination, contingent earnout considerations accrual					$ 4,500,000			4,500,000
Direct transaction costs					430,000			$ 430,000	801,000
Business combination revenue recorded									247,000
Business combination net loss recorded									(118,000)
Purchase price consideration	$ 19,771,000
M2 Dynamics [Member] | Restatement Adjustment [Member]
Business Acquisition [Line Items]
Increase in total purchase price					662,000
Branchbird [Member]
Business Acquisition [Line Items]
Acquisition date								Aug. 17, 2015
Purchase price consideration		$ 4,200,000
Initial cash consideration		2,700,000							2,755,000
Working capital adjustment		19,000
Initial cash consideration increased		1,400,000
Earnout period								1 year
Earnout consideration		2,400,000
Business combination, contingent earnout considerations accrual					757,000			$ 757,000
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					221,000	$ 798,000
Zero2Ten [Member]
Business Acquisition [Line Items]
Acquisition date								Mar. 13, 2015
Initial cash consideration			$ 4,500,000						4,643,000
Working capital adjustment			457,000
Initial cash consideration increased			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					238,000	$ 130,000		$ 238,000
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]
Earnout period completed								12 months
Business combination, contingent earnout considerations accrual					$ 2,900,000			$ 2,900,000