Subsequent Events	3 Months Ended
Mar. 31, 2020
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent Events Subsequent to March 31, 2020, the Company sold 17,360 shares of Visa Class B restricted stock for a gain of $3.0 million which resulted in an observable market price. As a result, the Company wrote up its remaining 77,683 Visa Class B restricted shares to a fair value of $13.4 million which was also recorded as a gain, for a total gain of $16.4 million. Based on the existing transfer restriction and uncertainty of covered litigation, the shares were previously carried at a zero cost basis.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

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