Represents the increase (decrease) in the number of common shares outstanding.

No definition available.

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- Definition

Represents the per share amount of a special dividend declared, but not paid, as of the financial reporting date.

+ References

No definition available.

+ Details

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- Definition

The price per share at which stock was repurchased and retired during the period.

+ References

No definition available.

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

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

+ References

+ Details

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- Definition

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.

+ References

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- Definition

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

+ References

+ Details

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- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-02(29))
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-Publisher FASB
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

Number of shares that have been repurchased and retired during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-Publisher FASB
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-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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SUBSEQUENT EVENTS (Details) - $ / shares					1 Months Ended			4 Months Ended	9 Months Ended	12 Months Ended
SUBSEQUENT EVENTS (Details) - $ / shares	Mar. 17, 2017	Jan. 11, 2017	Jan. 05, 2017	Jan. 04, 2017	Jan. 31, 2017	Nov. 30, 2014	Apr. 30, 2014	Apr. 21, 2014	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 13, 2016
Subsequent events
Special dividend declared (in dollars per share)													$ 1.25
Subsequent event
Subsequent events
Dividends declared per share				$ 0.37
Dividend paid (in dollars per share)	$ 0.37
Class A common stock
Subsequent events
Dividends declared per share										$ 3.29	$ 1.00	$ 1.4
Shares issued (in shares)									7,483,442
Common stock, shares outstanding						19,770,893				20,561,108	20,273,118
Remaining shares sold										20,948,998	20,536,740
Class A common stock \| Subsequent event
Subsequent events
Dividend paid (in dollars per share)			$ 1.25
Shares issued (in shares)		5,750,000
Increase in the number of common shares outstanding		5,356,876
Remaining shares sold		393,124
Class B common stock
Subsequent events
Shares issued (in shares)							36,158,698	36,158,698
Common stock, shares outstanding										31,138,193	31,229,236
Remaining shares sold										31,138,193	31,229,236
Follow-on Offering \| Class A common stock
Subsequent events
Shares issued (in shares)		5,750,000				4,509,400
Follow-on Offering \| Class B common stock
Subsequent events
Number of shares repurchased and retired					5,356,876	1,509,131
Price per share of stock which was repurchased and retired					$ 101	$ 28
Follow-on Offering \| Class B common stock \| Subsequent event
Subsequent events
Number of shares repurchased and retired		5,356,876
Price per share of stock which was repurchased and retired		$ 101