Information Regarding Net Revenue and Gross Profit by Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net revenue			$ 60,794	$ 81,249
Gross profit			$ 23,149	$ 33,456
Gross profit margin			38.00%	41.00%
Operating expenses:
Research and development			$ 9,151	$ 6,902
Selling and marketing			20,236	20,635
General and administrative			19,604	12,751
Earn-out consideration				3,510
Impairment of goodwill	$ 7,800	$ 1,000	8,771
Restructuring and severance			1,266	3,098
Total operating expenses			59,028	46,896
Loss from operations			(35,879)	(13,440)
Non-operating income (expense):
Interest expense, net			(1,908)	(3,619)
Foreign currency loss (gain), net			(1,211)	(1,270)
Loss from continuing operations before income taxes and noncontrolling interest			(38,998)	(18,329)
Premises
Segment Reporting Information [Line Items]
Net revenue			19,963	19,033
Gross profit			$ 11,522	$ 11,358
Gross profit margin			58.00%	60.00%
Identity
Segment Reporting Information [Line Items]
Net revenue			$ 11,950	$ 17,045
Gross profit			$ 5,040	$ 8,232
Gross profit margin			42.00%	48.00%
Credentials
Segment Reporting Information [Line Items]
Net revenue			$ 27,336	$ 41,565
Gross profit			$ 5,613	$ 11,898
Gross profit margin			21.00%	29.00%
All Other
Segment Reporting Information [Line Items]
Net revenue			$ 1,545	$ 3,606
Gross profit			$ 974	$ 1,968
Gross profit margin			63.00%	55.00%