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Stock-Based Compensation - Summary of Option and RSU Activity (Details) - Equity Incentive Plan 2010
shares in Thousands
Mar. 31, 2020
$ / shares
shares
Shares Available for Grant  
Balance at the beginning of the year (in shares) 88
Balance at the end of the period (in shares) 88
Number of Shares  
Balance at the beginning of the year (in shares) 161
Balance at the end of the period (in shares) 161
Weighted Average Exercise Prices  
Weighted-average exercise price (in dollars per share) | $ / shares $ 10.85
Weighted-average exercise price (in dollars per share) | $ / shares $ 10.85