Annual report pursuant to Section 13 and 15(d)

Income Taxes (Reconciliation Of Effective Rate) (Detail)

v3.8.0.1
Income Taxes (Reconciliation Of Effective Rate) (Detail)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Effective Income Tax Rate Reconciliation [Line Items]      
Federal Income Tax at Statutory Rate 34.00% 34.00% 34.00%
State Tax Provision, Net of Federal Benefit 0.30% 0.30% 0.30%
Foreign Income Taxed at Other Than 34% 0.00% (0.70%) 0.00%
Change in Corporate Tax Rates from 34% to 21% (52.90%) 0.00% 0.00%
Loss on Derivative Valuation 0.00% 0.00% (6.30%)
Other (0.70%) 0.50% 0.70%
Effective Tax Rate (19.30%) 34.10% 28.70%
Change in Valuation Allowance 19.30% (34.10%) (28.70%)
Net Effective Tax Rate 0.00% 0.00% 0.00%