Condensed Consolidated Statements of Stockholders' Equity (Deficit) (Parenthetical) shares in Thousands	3 Months Ended
Mar. 31, 2019 $ / shares shares
Statement of Stockholders' Equity [Abstract]
Dividends declared per common share (in dollars per share) \| $ / shares	$ 0.45
Purchase of shares of common stock under share repurchase program (in shares) \| shares	872,317

Number of shares issued during the period as a result of an employee stock purchase plan.

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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-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Name:	us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration