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Income Taxes - Schedule of Provision for Taxes on Income and Other Related Income Before Taxes (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Federal |  |  |  |  |  |  |  |  |  |  |
Current |  |  |  |  |  |  |  |  | $ 32,299 | $ 18,811 | $ 7,697
Deferred |  |  |  |  |  |  |  |  | (1,744) | (3,192) | 3,890
State |  |  |  |  |  |  |  |  |  |  |
Current |  |  |  |  |  |  |  |  | 1,764 | 2,273 | 1,559
Deferred |  |  |  |  |  |  |  |  | 192 | (1,171) | (225)
Foreign |  |  |  |  |  |  |  |  |  |  |
Current |  |  |  |  |  |  |  |  | 13,077 | 14,960 | 14,562
Deferred |  |  |  |  |  |  |  |  | 2,102 | (4,063) | (664)
Total |  |  |  |  |  |  |  |  | 47,690 | 27,618 | 26,819
Income before Taxes |  |  |  |  |  |  |  |  |  |  |
Domestic |  |  |  |  |  |  |  |  | 72,662 | 64,675 | 48,721
Foreign |  |  |  |  |  |  |  |  | 66,575 | 49,141 | 54,135
Income Before Provision for Income Taxes | $ 28,532 | $ 29,312 | $ 37,063 | $ 44,330 | $ 7,009 | $ 27,143 | $ 39,196 | $ 40,468 | $ 139,237 | $ 113,816 | $ 102,856

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- Definition Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations. + References Reference 1: 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.7) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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