Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Number of previously issued common shares repurchased by the issuing entity and held in treasury.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

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Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Nov. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Class A Common Stock [Member]
Common stock, par value	$ 0.01		$ 0.01
Common stock, shares authorized	1,000,000,000		1,000,000,000
Common stock, shares issued	158,342,559		156,966,336	131,886,409
Common stock, shares outstanding	156,679,527	157,422,916	156,916,336		138,921,533	138,921,533	138,593,787
Treasury stock, shares issued	1,663,032		50,000
Class B Common Stock [Member]
Common stock, par value	$ 0.01		$ 0.01
Common stock, shares authorized	500,000,000		500,000,000
Common stock, shares issued	21,285,533		21,285,533	21,285,537
Common stock, shares outstanding	21,285,533		21,285,533