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Provision for Income Taxes (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015 | Dec. 31, 2014
Summary Of Components Of Income Tax Expense Benefit Continuing Operations [Line Items] |  |  |  |  |  |
Total deferred income tax expense |  |  | $ (4,708) | $ (757) | $ 3,700 | $ 8,378
Current: |  |  |  |  |  |
Federal |  |  |  |  | 245 | 819
State and local |  |  |  |  | 184 | 320
Total current expense |  |  |  |  | 429 | 1,139
Deferred: |  |  |  |  |  |
Federal |  |  |  |  | 3,610 | 8,199
State and local |  |  |  |  | 90 | 180
Total deferred income tax expense |  |  | (4,708) | (757) | 3,700 | 8,378
Total income tax expense | $ 5 | $ (1,764) | $ (51) | $ (131) | $ 4,129 | 9,518
Scenario, Previously Reported [Member] |  |  |  |  |  |
Summary Of Components Of Income Tax Expense Benefit Continuing Operations [Line Items] |  |  |  |  |  |
Total deferred income tax expense |  |  |  |  |  | 8,379
Deferred: |  |  |  |  |  |
Total deferred income tax expense |  |  |  |  |  | $ 8,379

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- Definition Amount of current federal 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 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Current Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6509736 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 Reference 4: 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=6907707&loc=d3e32639-109319 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section I -Paragraph Question 1-7 + Details
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