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Income Taxes - Schedule of Income Tax Asset (Detail) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Current: |  |
Income tax asset , Current, Total | $ 19,103 | $ 14,659
Deferred: |  |
Income tax asset , Deferred, Total | 43,071 | 25,387
Income tax asset (liability), Total | 62,174 | 40,046
Federal [Member] |  |
Current: |  |
Income tax asset , Current, Total | 12,303 | 11,713
Deferred: |  |
Income tax asset , Deferred, Total | 27,334 | 16,557
State [Member] |  |
Current: |  |
Income tax asset , Current, Total | 6,800 | 2,946
Deferred: |  |
Income tax asset , Deferred, Total | $ 15,737 | $ 8,830

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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b),(c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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