v3.10.0.1

Income Taxes - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Income Tax Contingency [Line Items] |  |  |  |  |
Effective income tax rates | (6.50%) | (17.10%) | (8.40%) | (12.20%) |
Unrecognized tax benefits | $ 0.6 |  | $ 0.6 |  | $ 1.5
Unrecognized tax benefits income tax penalties and interest accrued | $ 0.2 |  | 0.2 |  | 0.4
Unrecognized tax benefits, reduction resulting from lapse of applicable statute of limitations |  |  | $ 1.1 |  |
State |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |
Net operating loss carryforwards |  |  |  |  | 630.7
Net operating loss carryforwards, Year of expiration |  |  | 2024 |  |
Federal |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |
Net operating loss carryforwards |  |  |  |  | $ 700.3
Net operating loss carryforwards, Year of expiration |  |  | 2028 |  |

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: 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)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
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