Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Federal statutory rate	(35.00%)	(35.00%)	(35.00%)
Adjustments for tax effects of:
State taxes, net	(0.30%)	(1.10%)	(0.10%)
Stock-based compensation	0.30%	6.20%	0.50%
Foreign taxes	0.20%	3.40%	1.10%
Tax credits	(0.30%)	(3.30%)	(0.40%)
Deemed foreign dividend	0.10%	(0.00%)	(0.00%)
Fair market value adjustments	(1.60%)	(7.60%)	0.00%
Intercompany debt forgiveness and other permanent adjustments	0.60%	3.10%	9.50%
Goodwill impairment	29.10%	0.00%	0.00%
Tax rate adjustment	0.40%	0.40%	0.20%
Uncertain tax positions	(0.10%)	5.30%	2.70%
Other	3.10%	0.20%	(0.40%)
Valuation allowance	3.80%	37.50%	25.90%
Effective income tax rate	0.30%	9.10%	4.00%