Federal Statutory Income Tax Rate, Historical

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Tax Cuts and Jobs Act of 2017, Corporate Federal Tax Rate

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Publisher FASB
-Name Accounting Standards Codification
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Tax year being audited in the income tax examination, in CCYY format.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of unrecognized tax benefits.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Liability for unrecognized tax benefits	$ 7,032
Unrecognized tax benefits, income tax penalties and interest accrued	567
Unrecognized tax benefits that would impact the effective tax rate	6,863
Income Tax Expense (Benefit)	$ 1,077	$ (584)
Effective Income Tax Rate Reconciliation, Percent	24.60%
Federal Statutory Income Tax Rate, Historical			35.00%
Tax Cuts and Jobs Act of 2017 Corporate Federal Tax Rate	21.00%
Minimum
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2014
Maximum
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2016