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Differences between Statutory Federal Income Tax Rate and Effective Income Tax Rate (Detail) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Income Tax Disclosure [Abstract] |  |  |
Statutory federal income tax rate | 35.00% | 35.00% | 35.00%
State income taxes, net of federal tax benefit | 2.70% | 1.00% | 0.90%
Valuation allowance | (231.70%) | 41.30% | 8.80%
Domestic production deduction | (1.20%) | 0.00% | 0.00%
Bad debt deduction | 0.00% | (24.90%) | 0.00%
Asset dispositions and write-offs | (3.00%) | (29.50%) | 0.00%
Repatriation effects | 1.50% | 0.00% | 0.00%
Tax reserves | 0.00% | (1.00%) | 4.10%
R&D tax credits | (1.50%) | 0.00% | (4.10%)
Foreign tax rate effects | (4.40%) | (7.20%) | (22.50%)
Other, net | 0.30% | 0.40% | (1.10%)
Effective income tax rate | (202.30%) | 15.10% | 21.10%

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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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