Income Taxes - Additional Information (Detail) - USD ($) $ in Millions |
12 Months Ended | |
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Dec. 31, 2016 |
Dec. 31, 2015 |
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| Income Taxes [Line Items] | ||
| Tax benefits recorded to additional paid-in capital because of the exercise of stock options | $ 0.8 | $ 0.1 |
| Federal [Member] | ||
| Income Taxes [Line Items] | ||
| Net operating loss | 80.7 | |
| State [Member] | ||
| Income Taxes [Line Items] | ||
| Net operating loss | $ 30.2 | |
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- Definition Income taxes. No definition available.
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- Definition Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount after tax of income (loss) from continuing operations attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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