Organization and Summary of Significant Accounting Policies - Revenue Recognition (Details) $ in Millions	Dec. 31, 2018 USD ($)
Accounting Standards Update 2016-09
New Accounting Pronouncements or Change in Accounting Principle
Excess tax benefits cumulative effect adjustment recorded to retained earnings	$ 1.1

Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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