Stock-Based Compensation and Employee Benefit Plans - Summary of the Activity under the Picor Stock Option Plans (Detail) - Picor Plan [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Options Outstanding, Beginning balance	9,725,067
Options Outstanding, Granted	603,000
Options Outstanding, Forfeited and expired	(113,560)
Options Outstanding, Exercised	(683,520)
Options Outstanding, Ending balance	9,530,987
Options Outstanding, Exercisable	7,915,219	8,053,490	6,643,377
Options Outstanding, Vested or expected to vest	9,470,822
Weighted Average Exercise Price, Beginning balance	$ 0.62
Weighted Average Exercise Price, Granted	0.88
Weighted Average Exercise Price, Forfeited and expired	0.65
Weighted Average Exercise Price, Exercised	0.88
Weighted Average Exercise Price, Ending balance	0.62
Weighted Average Exercise Price, Exercisable	0.62	$ 0.64	$ 0.67
Weighted Average Exercise Price, Vested or expected to vest	$ 0.62
Weighted-Average Remaining Contractual Life in Years, Outstanding	4 years 6 months 22 days
Weighted-Average Remaining Contractual Life in Years, Exercisable	4 years 1 month 2 days
Weighted-Average Remaining Contractual Life in Years, Vested or expected to vest	4 years 6 months 15 days
Aggregate Intrinsic Value, Outstanding	$ 1,262
Aggregate Intrinsic Value, Exercisable	1,030
Aggregate Intrinsic Value, Vested or expected to vest	$ 1,256