Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019
Statement of Stockholders' Equity [Abstract]
Purchase of common stock, shares	0	0	282,992	0	700,000	600,000
Dividends declared per share	$ 0.09	$ 0.09	$ 0.09	$ 0.09	$ 3.84	$ 0.09
Equity compensation activity, shares	893	10,297	125,203	9,712	6,901	46,129

Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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