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Stockholders' Equity	12 Months Ended
	Dec. 31, 2018
Stockholders' Equity [Abstract]
Stockholders' Equity	Note 9, Stockholders’ Equity: Common Stock has a preferential dividend rate of at least 105% of the dividend paid on Class A Common Stock. Class A Common Stock has greater voting rights which include:  voting as a separate class for the election of 75% of the total number of directors and on all other matters subject to shareholder vote, each share of Class A Common Stock has ten votes and votes with the Common Stock as a single class. Class A Common Stock is convertible at the holder’s option at any time into Common Stock on a 1-for-1 basis; Common Stock is not convertible into Class A Common Stock.       A special cash dividend of $1.00 for Common Stock and $0.95 for Class A Common Stock was paid in the fourth quarter of 2018 and 2016. Aggregate dividends paid on Common Stock was $32,595,000, $10,473,000 and $27,674,000 in 2018, 2017 and 2016, respectively. Aggregate dividends paid on Class A Common Stock was $2,869,000, $919,000 and $2,735,000 in 2018, 2017 and 2016, respectively.

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- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-URI http://asc.fasb.org/topic&trid=2208762

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