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Income Taxes - Change In Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Changes In The Valuation Allowance For Deferred Tax Assets [Roll Forward]
Valuation allowance at the beginning of the year	$ 21,138	$ 19,929
Decreases recorded as benefits to income tax provision	(4,341)	0
Increases recorded to income tax provision	0	1,209
Valuation allowance at the end of the year	$ 16,797	$ 21,138

X

- Definition

Changes In The Valuation Allowance For Deferred Tax Assets

+ References

No definition available.

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- Definition

Valuation Allowance, Deferred Tax Asset, Decrease Recorded As A Benefit To Income Tax Provision, Amount

+ References

No definition available.

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X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=116821951&loc=d3e32123-109318

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