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Stock Plans - Stock Option Awards (Details)
shares in Thousands
12 Months Ended
Dec. 31, 2018
$ / shares
shares
Vested  
Number of Shares | shares 1,222
Weighted Average Exercise Price $ 34.80
Weighted Average Remaining Contractual Life 3 years
Total  
Number of Shares | shares 1,222
Weighted Average Exercise Price $ 34.80
Weighted Average Remaining Contractual Life 3 years
Closing price $ 7.41