Financial Liabilities - Additional Information (Detail) - USD ($)							12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Mar. 31, 2016	Dec. 04, 2015	Nov. 10, 2014	Mar. 31, 2014	Dec. 31, 2016
Debt Instrument [Line Items]
Borrowing capacity under credit facility						$ 10,000,000
Revolving credit agreement amendment date					Nov. 10, 2014
Revolving credit agreement date					Mar. 31, 2014
New Opus Warrant 1
Debt Instrument [Line Items]
Warrant exercise price	$ 2.22	$ 2.22					$ 2.22
New Opus Warrant 2
Debt Instrument [Line Items]
Warrant exercise price	$ 3.61						$ 3.61
Amended Credit Agreement
Debt Instrument [Line Items]
Amount borrowed under term loan	$ 18,300,000						$ 18,300,000
Borrowing capacity under credit facility					$ 30,000,000
Debt instrument, payment terms							monthly
Revolving credit facility interest rate term							Under the terms of the Amended Credit Agreement, both the principal amount of the Term Loan and the principal amount outstanding under the Revolving Loan Facility bear interest at a floating rate equal to: (a) if the Company holds more than $30.0 million in cash with Opus, the greater of (i) the prime rate plus 1.50% and (ii) 4.75%; (b) if the Company holds $30.0 million or less but more than $20.0 million in cash with Opus, the greater of (i) the prime rate plus 2.25% and (ii) 5.50%; or (c) if the Company holds $20.0 million or less in cash with Opus, the greater of (i) the prime rate plus 2.75% and (ii) 6.00%. Interest on both facilities continues to be payable monthly.
Prime Rate | Scenario One | Amended Credit Agreement
Debt Instrument [Line Items]
Percentage points added to base rate					1.50%
Prime Rate | Scenario Two | Amended Credit Agreement
Debt Instrument [Line Items]
Percentage points added to base rate					2.25%
Prime Rate | Scenario Three | Amended Credit Agreement
Debt Instrument [Line Items]
Percentage points added to base rate					2.75%
Maximum | Scenario Two | Amended Credit Agreement
Debt Instrument [Line Items]
Cash held with opus					$ 30,000,000
Maximum | Scenario Three | Amended Credit Agreement
Debt Instrument [Line Items]
Cash held with opus					20,000,000
Minimum | Scenario One | Amended Credit Agreement
Debt Instrument [Line Items]
Cash held with opus					$ 30,000,000
Debt instrument, interest rate					4.75%
Minimum | Scenario Two | Amended Credit Agreement
Debt Instrument [Line Items]
Cash held with opus					$ 20,000,000
Debt instrument, interest rate					5.50%
Minimum | Scenario Three | Amended Credit Agreement
Debt Instrument [Line Items]
Debt instrument, interest rate					6.00%
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility maturity date							Feb. 08, 2018
Revolving Credit Facility | Amended Credit Agreement
Debt Instrument [Line Items]
Credit facility maturity date					Nov. 10, 2017
Revolving Credit Facility | Prime Rate
Debt Instrument [Line Items]
Credit facility maturity date							Feb. 08, 2019
Bank Term Loan
Debt Instrument [Line Items]
Term loan maturity date					Mar. 31, 2017
Common Stock | New Opus Warrant 1
Debt Instrument [Line Items]
Warrants issued to purchase common stock		100,000
Common Stock | New Opus Warrant 2
Debt Instrument [Line Items]
Warrants issued to purchase common stock	100,000						100,000
Opus Bank
Debt Instrument [Line Items]
Amount borrowed under term loan						10,000,000
Borrowing capacity under credit facility						$ 10,000,000
Warrant exercise price						$ 9.90
Common stock warrants fair value						$ 800,000
Revolving credit agreement amendment date				Dec. 04, 2015
Credit agreement, financial covenant description							consolidated tangible net worth, plus amounts payable to Secure Keyboards (see Note 6), to be less than $8,000,000 plus, 50% of any proceeds from debt or equity issued after December 1, 2015.
Percentage of Cash Proceeds from Equity or Subordinated Debt				50.00%
Opus Bank | Third Amendment
Debt Instrument [Line Items]
Borrowing capacity under credit facility			$ 10,000,000		$ 30,000,000
Revolving credit agreement amendment date			Mar. 31, 2016
Financial covenants with minimum cash			$ 7,500,000
Opus Bank | Third Amendment | New Opus Warrant 1
Debt Instrument [Line Items]
Warrant exercise price		$ 2.22
Private placement warrant estimated volatility		83.90%
Private placement warrant dividend yield		0.00%
Private placement warrant expected life (in years)		3 years
Private placement warrant risk free interest rate		0.90%
Opus Bank | Third Amendment | Opus Warrant And New Opus Warrant One
Debt Instrument [Line Items]
Common stock warrants fair value		$ 400,000
Opus Bank | Third Amendment | New Opus Warrant 2
Debt Instrument [Line Items]
Warrant exercise price	$ 3.61						$ 3.61
Private placement warrant estimated volatility	78.40%
Private placement warrant dividend yield	0.00%
Private placement warrant expected life (in years)	5 years
Private placement warrant risk free interest rate	1.94%
Opus Bank | Third Amendment | New Opus Warrant
Debt Instrument [Line Items]
Common stock warrants fair value	$ 200,000						$ 200,000
Opus Bank | Maximum
Debt Instrument [Line Items]
Consolidated tangible net worth amount				$ 8,000,000
Opus Bank | Bank Term Loan | Revolving Credit Facility
Debt Instrument [Line Items]
Payment Of Financing And Stock Issuance Costs						$ 900,000
Opus Bank | Common Stock | Third Amendment | New Opus Warrant 1
Debt Instrument [Line Items]
Warrants issued to purchase common stock		100,000
Opus Bank | Common Stock | Third Amendment | New Opus Warrant 2
Debt Instrument [Line Items]
Warrants issued to purchase common stock	100,000						100,000
Opus Bank | Common Stock | Maximum
Debt Instrument [Line Items]
Warrants issued to purchase common stock						100,000
Opus Bank | Warrants to Purchase Common Stock
Debt Instrument [Line Items]
Private placement warrant estimated volatility						92.09%
Private placement warrant dividend yield						0.00%
Private placement warrant expected life (in years)						5 years
Private placement warrant risk free interest rate						1.73%