Description of Business and Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016 USD ($) Customer shares	Dec. 31, 2015 USD ($) shares
Summary Of Business And Accounting Policies [Line Items]
Entity incorporation date	1994-07
Common stock equivalent shares excluded from computations of basic and diluted income per share | shares	691,243	213,820
Capitalized software development costs	$ 0	$ 0
Advertising expense	$ 45,000	$ 23,000
Office furniture and equipment [Member]
Summary Of Business And Accounting Policies [Line Items]
Leasehold improvements estimated useful life	3 years
Minimum [Member]
Summary Of Business And Accounting Policies [Line Items]
Intangible assets useful life range	1 year
Minimum [Member] | Leasehold improvements [Member]
Summary Of Business And Accounting Policies [Line Items]
Leasehold improvements estimated useful life	2 years
Maximum [Member]
Summary Of Business And Accounting Policies [Line Items]
Intangible assets useful life range	10 years
Maximum [Member] | Leasehold improvements [Member]
Summary Of Business And Accounting Policies [Line Items]
Leasehold improvements estimated useful life	10 years
IoT Market [Member]
Summary Of Business And Accounting Policies [Line Items]
Number of customer account as major customer | Customer	3