Statement of Stockholders' Equity (Unaudited) (Parenthetical) - USD ($) $ in Thousands	1 Months Ended	9 Months Ended
Aug. 31, 2019	Apr. 30, 2019	Feb. 28, 2019	Jul. 31, 2018	May 31, 2018	Feb. 28, 2018	Sep. 30, 2019	Sep. 30, 2018
Other comprehensive income (loss), tax							$ (745)	$ 228
Dividends declared (in dollars per share)	$ 0.48	$ 0.48	$ 0.48	$ 0.48	$ 0.48	$ 0.48	$ 1.44	$ 1.44
Retained Earnings (Deficit)
Tax impact of adoption of ASC 842							$ 3,966

Amount of tax expense (benefit) allocated to other comprehensive income (loss) attributable to parent entity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
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-URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569643-111683

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
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