Business Combinations - Additional Information (Detail) - USD ($)			3 Months Ended			9 Months Ended
	Aug. 17, 2015	Mar. 13, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Sep. 30, 2015
Business Acquisition [Line Items]
Direct acquisition costs			$ 321,000			$ 932,000
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
Direct acquisition costs					$ 611,000
Estimated earnout consideration, Fair value		4,400,000
Earnout consideration		8,600,000
Business combination, contingent earnout considerations accrual			5,400,000			$ 5,400,000
Purchase price consideration		9,010,000
Gross cash consideration		$ 5,000,000
Increase in carrying value of goodwill				$ 101,000
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
Direct acquisition costs			321,000			321,000
Estimated earnout consideration, Fair value	1,400,000
Earnout consideration	2,400,000
Business combination, contingent earnout considerations accrual			$ 1,500,000			$ 1,500,000
Purchase price consideration	$ 4,183,000