Income Taxes (Effective Income Tax Rate Reconciliation From Statutory Rate Due To Tax Effect) (Detail)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Federal income tax computed at the statutory rate	35.00%	35.00%	35.00%
Tax-exempt interest	(0.70%)	1.50%	40.20%
Mark-to-market on warrants	(0.70%)	0.30%	(11.20%)
Change in valuation allowance	(5.60%)	6.20%	119.40%
Change in uncertain tax positions	(0.10%)	(1.00%)	(22.30%)
State income tax, net of federal benefit	0.10%	0.00%	11.50%
Out-of-period adjustment	(3.80%)	0.00%	0.00%
Tax return and deferred inventory adjustments	(0.30%)	(0.20%)	(13.60%)
Foreign taxes	(1.20%)	0.10%	(1.80%)
Other	0.10%	(0.80%)	(1.40%)
Effective tax rate	22.80%	41.10%	155.80%