Date the declared dividend will be paid, in CCYY-MM-DD format.

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

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Date the dividend to be paid was declared, in CCYY-MM-DD format.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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The cash outflow to reacquire common stock during the period.

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Cash inflow received as distributions, returns of capital, or sale proceeds from partnership interests held for investment purposes.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	6 Months Ended
	Aug. 06, 2019	Jul. 31, 2019	Aug. 07, 2019	Jun. 30, 2019	Jun. 30, 2018
Subsequent Event [Abstract]
Amount withdrawn from partnership				$ 20,231	$ 369
Repurchase of common shares				$ 6,487	$ 1,280
Arbiter Partners LP [Member]
Subsequent Event [Abstract]
Amount withdrawn from partnership		$ 11,127
Class A [Member]
Subsequent Event [Abstract]
Repurchase of common stock (in shares)				2,893
Class B [Member]
Subsequent Event [Abstract]
Repurchase of common stock (in shares)				371,188
Subsequent Event [Member]
Subsequent Event [Abstract]
Dividend payable, date declared	Aug. 06, 2019
Dividend payable, date to be paid	Sep. 03, 2019
Dividend payable, date of record	Aug. 20, 2019
Repurchase of common shares			$ 2,565
Subsequent Event [Member] \| Class A [Member]
Subsequent Event [Abstract]
Dividend payable (in dollars per share)	$ 0.10
Repurchase of common stock (in shares)			158
Subsequent Event [Member] \| Class B [Member]
Subsequent Event [Abstract]
Dividend payable (in dollars per share)	$ 0.10
Repurchase of common stock (in shares)			152,593