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Equity - Stock Repurchase Program (Narrative) (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 27, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Equity, Class of Treasury Stock [Line Items] |  |  |
Number of shares repurchased (in shares) |  | 4,609,021 | 5,057,682
Average price of shares repurchased (in dollars per share) |  | $ 9.99 | $ 9.88
Stock Repurchase Program |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Authorized amount of repurchases |  |  | $ 100,000,000
Stock Repurchase Program | Subsequent Event |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Authorized amount of repurchases | $ 100,000,000 |  |
Authorized current repurchases | $ 50,000,000 |  |
Stock Repurchase Program, Current Repurchases Authorized |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Authorized amount of repurchases |  |  | $ 50,000,000

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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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