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Provision for Income Taxes (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | [1] | 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
Current: |  |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | $ (3,690) |  | $ 4,981 |  | $ 174
State and local |  |  |  |  |  |  |  |  | 532 |  | 567 |  | 2
Current Income Tax Expense (Benefit), Total |  |  |  |  |  |  |  |  | (3,158) |  | 5,548 |  | 176
Deferred: |  |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | 4,293 |  | 949 |  | 2,460
State and local |  |  |  |  |  |  |  |  | (288) |  | 131 |  | 308
Deferred Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | 4,005 |  | 1,080 |  | 2,768
Expense for income taxes | $ (7,389) | $ (652) | $ 5,314 | $ 3,574 | $ (1,071) | $ 2,933 | $ 2,962 | $ 1,804 | $ 847 | [2] | $ 6,628 | [2] | $ 2,944
[1] | As discussed previously, the fourth quarter 2017 results include the results of ARI subsequent to the acquisition on October 10, 2017.
[2] | The sum of the net earnings per share may not add up to the full year amount due to rounding and because the quarterly calculations are based on varying numbers of shares outstanding.

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