Related-Party Transactions - Additional Information (Detail)				6 Months Ended		3 Months Ended		6 Months Ended			3 Months Ended	6 Months Ended
	Jun. 30, 2012 USD ($)	Dec. 31, 2011 USD ($)		Jun. 30, 2012 Secure Keyboards, Ltd.	Jun. 30, 2012 Secure Networks, Ltd.	Jun. 30, 2012 Related Party Transactions USD ($)	Jun. 30, 2011 Related Party Transactions USD ($)	Jun. 30, 2012 Related Party Transactions USD ($)	Jun. 30, 2011 Related Party Transactions USD ($)	Jun. 30, 2012 Settlement Agreement Maximum	Jun. 30, 2012 payment solution AG Mountain Partners Aktiengesellschaft USD ($)	Jun. 30, 2012 payment solution AG Mountain Partners Aktiengesellschaft USD ($)	Jan. 30, 2012 payment solution AG Mountain Partners Aktiengesellschaft USD ($)	Jan. 30, 2012 payment solution AG Mountain Partners Aktiengesellschaft EUR (€)
Related Party Transaction [Line Items]
Percentage of ownership by a related party following acquisition				30.00%	9.00%
Installment payment, contractual payment year										2020
Expense recognized for interest accreted on discounted liability						$ 200,000	$ 200,000	$ 400,000	$ 400,000
Working capital provided														250,000
Outlasting loan at acquisition date													400,000	327,000.0
Interest rate											8.00%	8.00%
Interest Expense											6,600	11,000
Liability to related party	$ 1,525,000	$ 1,076,000	[1]								$ 400,000	$ 400,000

[1] The condensed consolidated balance sheet has been derived from the audited consolidated financial statements at December 31, 2011 but does not include all the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements.