Note 9 - Other Assets - Components of Other Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Other Assets [Abstract]
Prepaid Reinsurance Premiums	$ 243,326	$ 267,638
Prepaid federal income taxes (Note 10)	210,889	210,889
Loaned securities (Note 5)	134,304	57,499
Company-owned life insurance (2)	109,681	115,586
Right-of-use assets (Note 13)	31,265	32,985
Other	34,037	30,488
Other Assets	$ 763,502	$ 715,085

This item represents the amount that could be realized under a life insurance contract or contracts owned by the Entity as of the date of the statement of financial position. Such Entity-owned life insurance policies are commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI).

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- Definition

Amount of lessee's right to use underlying asset under operating lease.

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Amount of assets classified as other.

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- Definition

Amount of other miscellaneous assets.

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- Definition

The unexpired portion of premiums ceded on policies in force as of the balance sheet date.

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Amount of asset related to consideration paid in advance for income and other taxes that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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Amount of asset associated with securities loaned to entities in exchange for collateral.

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