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Income Taxes - Components of Current and Deferred Income Tax Expense (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Current: |  |  |
Federal | $ 19,007 | $ 14,515 | $ 1,598
State and local | 2,708 | 1,425 | 2,431
Foreign | 440 | 567 | 210
Total current | 22,155 | 16,507 | 4,239
Deferred: |  |  |
Federal | 7,947 | 10,629 | 46,784
State and local | 1,105 | 2,296 | 6,233
Foreign | (214) | (25) | (123)
Total deferred | 8,838 | 12,900 | 52,894
Income tax expense from operations | $ 30,993 | $ 29,407 | $ 57,133

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- Definition Amount of current income tax expense (benefit) pertaining to taxable 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 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 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 S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.7) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 + Details
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