Reconciliation for Significant Differences in Tax at Statutory and Effective Rates (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Statutory Federal Tax Rate [Line Items]
Federal income tax expense (benefit)	35.00%	35.00%	35.00%
State income tax expense, net of federal tax effect	6.20%	5.60%	415.90%
Effect of differences in U.S. and Foreign statutory rates	4.80%	20.80%	1031.80%
Uncertain tax positions	0.40%	2.10%	54.20%
State tax refund adjustment			180.00%
Other	4.30%	(6.40%)	(46.20%)
Foreign deemed dividend	(45.30%)	(51.80%)
Foreign tax credit	21.40%	24.40%
Valuation allowance	(31.90%)	(491.70%)
Effective income tax rate	(5.10%)	(462.00%)	1670.70%