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

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-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
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Contractual interest rate for funds borrowed, under the debt agreement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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Subsequent Events (Details) - $ / shares		12 Months Ended
Subsequent Events (Details) - $ / shares	Feb. 19, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 15, 2020
Subsequent Event [Line Items]
Dividends declared (usd per share)		$ 1.20	$ 0.32	$ 0.08
7.50% senior notes due 2020
Subsequent Event [Line Items]
Senior Notes, interest rate, percentage			7.50%
Subsequent event
Subsequent Event [Line Items]
Dividends declared (usd per share)	$ 0.55
Subsequent event \| 7.50% senior notes due 2020
Subsequent Event [Line Items]
Senior Notes, interest rate, percentage					7.50%