Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended					12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2013 Segment	Dec. 31, 2012	Dec. 31, 2011
Goodwill And Intangible Assets Disclosure [Line Items]
Gross amount of goodwill	$ 72,400,000		$ 72,400,000			$ 72,400,000	$ 72,400,000
Accumulated goodwill impairment	54,300,000		27,100,000			54,300,000	27,100,000
Goodwill of discontinued operations	1,310,000		20,606,000			1,310,000	20,606,000
Goodwill written off related to divested businesses						7,966,000
Adjusted goodwill in connection with its acquisitions							300,000
Goodwill	8,991,000		24,664,000			8,991,000	24,664,000	59,044,000
Number of operating units						6
Impairment of goodwill	4,700,000	22,600,000		900,000	23,900,000	27,300	24,800,000
Impairment of goodwill						15,572,000	17,027,000
Goodwill impaired accumulated impairment loss during year			700,000	5,000,000	21,400,000		27,100,000
Impairment of long-lived assets						178,000	13,410,000
Percentage of discount rate			50.00%				50.00%
Intangible assets related to discontinued operations			206,000				206,000
Minimum
Goodwill And Intangible Assets Disclosure [Line Items]
Percentage of discount rate			16.00%				16.00%
Maximum
Goodwill And Intangible Assets Disclosure [Line Items]
Percentage of discount rate			20.00%				20.00%
Order Backlog
Goodwill And Intangible Assets Disclosure [Line Items]
Impairment of long-lived assets						200,000
Indefinite lived intangible assets, impairment						10,200,000
Continuing Operations
Goodwill And Intangible Assets Disclosure [Line Items]
Impairment of goodwill						15,600,000
Goodwill impaired accumulated impairment loss during year							17,000,000
Impairment of long-lived assets							13,400,000
Discontinuing Operations
Goodwill And Intangible Assets Disclosure [Line Items]
Impairment of goodwill						11,700,000
Goodwill impaired accumulated impairment loss during year							10,100,000
Impairment of long-lived assets, discontinued operation							11,400,000
Acquired
Goodwill And Intangible Assets Disclosure [Line Items]
Goodwill			13,000,000				13,000,000
Identity Management
Goodwill And Intangible Assets Disclosure [Line Items]
Goodwill of discontinued operations	1,310,000					1,310,000
Goodwill written off related to divested businesses						7,966,000
Goodwill	7,719,000					7,719,000		49,478,000
Number of operating units						4
ID Products
Goodwill And Intangible Assets Disclosure [Line Items]
Goodwill	$ 1,272,000					$ 1,272,000		$ 9,566,000
Number of operating units						2