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Income Taxes - Tax Cuts and Jobs Act (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes
Percentage of tax on earnings in the form of cash and cash equivalents	15.50%
Percentage of tax on earnings other than in the form of cash and cash equivalents	8.00%
Provisional Toll tax		$ 3,600	$ 4,600
Accrued income tax liabilities	$ 300
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%		35.00%
Tax related to GILTI	$ 600	400
Deferred tax assets	68,060	71,939
Deferred tax assets valuation allowance	8,327	$ 6,835
Increase in valuation allowance	$ 1,500

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to global intangible low-taxed income (GILTI).

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Represents the amount of provisional toll tax

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Represents the percentage of tax on earnings in the form of cash and cash equivalents.

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Represents the percentage of tax on earnings other than in the form of cash and cash equivalents.

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Amount of tax liability from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act of 2017.

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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