Acquisitions - Additional Information (Detail) - USD ($)	1 Months Ended	6 Months Ended	12 Months Ended
	Jan. 16, 2015	Jun. 30, 2016	Dec. 31, 2015	Dec. 31, 2014	Nov. 05, 2014
Business Acquisition Purchase Price Allocation Description	The purchase price for this acquisition was $2,424,000 cash paid at closing and the assumption of a liability of $20,000, and a maximum of an additional $3,000,000 earn-out.
Tangible assets	$ 1,606,000		$ 165,000	$ 5,435,000
Intangible assets	1,500,000		335,000	2,335,000
Goodwill	$ 2,338,000		170,000	$ 265,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High			3,000,000
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability			1,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net, Total					$ 8,035,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Goodwill			1,900,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles			800,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory			100,000
Business Combination, Contingent Consideration Arrangements, Change in Range of Outcomes, Contingent Consideration, Liability, Value, High			1,100,000
Business Combination, Contingent Consideration, Liability, Current		$ 771,000
Business Combination, Contingent Consideration, Liability, Noncurrent			900,000
Business Combination Earn Out Liability, Cash Paid		$ 129,000	445,000
Other Current Liabilities [Member]
Business Combination, Contingent Consideration, Liability, Current			900,000
Current Liabilities [Member]
Business Combination, Contingent Consideration, Liability, Current			371,000
Other Income [Member]
Business Combination, Contingent Consideration Arrangements, Change in Range of Outcomes, Contingent Consideration, Liability, Value, Low			300,000
Minimum [Member]
Intangible assets amotized period				2 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net, Total			4,400,000
Business Combination, Contingent Consideration, Liability			800,000
Maximum [Member]
Intangible assets amotized period				10 years
Allocated Share Based Compensation Expense			3,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net, Total			5,400,000
Business Combination, Contingent Consideration, Liability			$ 2,000,000