Distributions declared to non-controlling unitholders of RMCO, LLC.

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Aggregate dividends declared 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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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585

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-URI http://asc.fasb.org/extlink&oid=6513228

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Earnings Per Share and Dividends - Additional Information (Details) - USD ($)										12 Months Ended
	Feb. 24, 2016	Nov. 27, 2015	Sep. 03, 2015	Jun. 04, 2015	Apr. 08, 2015	Dec. 04, 2014	Sep. 03, 2014	Jun. 05, 2014	Apr. 18, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Dividends Payable [Line Items]
Dividends to Class A common stockholders										$ 24,003,000	$ 2,901,000
Dividends paid										$ 24,003,000	$ 2,901,000
Cash dividends declared per share		$ 0.1250	$ 0.1250	$ 0.1250	$ 1.6250	$ 0.0625	$ 0.0625	$ 0.0625	$ 0.0625	$ 2.00	$ 0.25
Distributions declared to non-controlling unitholders											$ 0	$ 0
Class A common stock
Dividends Payable [Line Items]
Dividends to Class A common stockholders										$ 24,003,000	$ 2,901,000
Subsequent Event \| Quarterly dividend \| Class A common stock
Dividends Payable [Line Items]
Cash dividends declared per share	$ 0.15