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Organization and Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
ROU assets	$ 4,084
Total lease liabilities	3,835
Retained earnings	$ 348,965		$ 286,623
ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
ROU assets		$ 4,500
Total lease liabilities		4,300
Retained earnings		$ 200

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Present value of lessee's discounted obligation for lease payments from operating lease.

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