Income Taxes (Income Tax Rate Reconciliation) (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
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 reform/change in tax rate	(71.40%)	0.00%	0.00%
Mark-to-market on warrants	1.40%	(1.50%)	(1.20%)
Change in valuation allowance	(116.90%)	(2.20%)	0.00%
Tax return and deferred inventory adjustments	0.80%	3.60%	0.00%
Foreign taxes	8.20%	0.00%	0.00%
Non deductible compensation	0.00%	(1.40%)	2.70%
Basis difference in foreign subsidiary	0.00%	(33.00%)	0.00%
Other	0.10%	(0.30%)	1.20%
Effective tax rate	(142.80%)	0.20%	37.70%