Income Taxes (Income Tax Rate Reconciliation) (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Effective income tax rate continuing operations tax rate reconciliation [Abstract]
Federal income tax computed at the statutory rate	35.00%	35.00%	35.00%
Increase (reduction) in taxes resulting from: [Abstract]
Tax-exempt interest	(0.50%)	(1.10%)	(0.70%)
Mark-to-market on warrants	(1.60%)	3.80%	(0.70%)
Change in valuation allowance	(13.50%)	(12.60%)	(5.60%)
Change in uncertain tax positions	(9.10%)	2.80%	(0.10%)
State income tax, net of federal benefit	0.50%	2.00%	0.10%
Out-of-period adjustment	0.00%	0.00%	(3.80%)
Foreign taxes	(0.50%)	(0.80%)	(1.20%)
Basis difference in foreign subsidiary	0.00%	11.40%	0.00%
Other	0.90%	(0.60%)	(0.20%)
Effective tax rate	11.20%	39.90%	22.80%