Aggregate dividends paid during the period for each share of common stock outstanding.

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The aggregate amount paid by the entity to reacquire the right to purchase equity shares at a predetermined price, usually issued together with corporate debt.

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-Section 45
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Amount of stock repurchase plan authorized.

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Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

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Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Common Stock and Dividends (Details) - USD ($) $ / shares in Units, $ in Thousands						1 Months Ended	9 Months Ended	127 Months Ended
	Oct. 15, 2019	Apr. 15, 2019	Oct. 16, 2018	Apr. 16, 2018	Apr. 09, 2017	Apr. 30, 2009	Sep. 30, 2018	Nov. 01, 2019	Apr. 09, 2019
Common Stock and Dividends
Payments for Repurchase of Warrants							$ 29,005
Cash dividends paid to common shareholders (in dollars per share)	$ 0.55	$ 0.50	$ 0.42	$ 0.33
Repurchase of common stock, authorized amount						$ 40,000			$ 50,000
Period of repurchase of common stock					12 months	12 months
Cumulative number of shares repurchased under all stock repurchase programs								10,320,487
Cumulative cost of shares repurchased under all stock repurchase programs								$ 329,122