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Income Taxes - Schedule of Net Operating Loss Expiration (Detail) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 USD ($)
Operating Loss Carryforwards [Line Items] |
Net operating loss expiration amount | $ 26,070
2019 [Member] |
Operating Loss Carryforwards [Line Items] |
Net operating loss expiration amount | 5,078
2021 [Member] |
Operating Loss Carryforwards [Line Items] |
Net operating loss expiration amount | 579
2023 [Member] |
Operating Loss Carryforwards [Line Items] |
Net operating loss expiration amount | 608
2024 [Member] |
Operating Loss Carryforwards [Line Items] |
Net operating loss expiration amount | 1,942
2032 [Member] |
Operating Loss Carryforwards [Line Items] |
Net operating loss expiration amount | 13,419
2033 [Member] |
Operating Loss Carryforwards [Line Items] |
Net operating loss expiration amount | $ 4,444

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