Note 9 - Other Assets Components of Other Assets (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019		Dec. 31, 2018	Dec. 31, 2017
Prepaid federal income taxes (Note 10)		$ 134,800		$ 0
Company-owned life insurance		105,721		83,377
Loaned securities		66,442		27,860
Internal-use software	[1]	58,356		51,367
Right-of-use assets	[4]	37,866	[2],[3]	0
Accrued investment income		32,333		34,878
Property and equipment	[5]	29,523		37,090
Assets held for sale	[6]	24,908		0
Deferred policy acquisition costs		20,759		17,311
Reinsurance recoverables		16,976		14,402
Unbilled receivables		13,772		19,917
Current federal income tax receivable	[7]	0		44,506
Other		26,163		36,992
Total other assets		567,619		367,700
Internal-use software, accumulated amortization		73,500		60,300
Impairments of internal-use software		3,800		5,100
Amortization expense		13,000		11,400	$ 10,700
Accumulated Amortization, Right-of-Use Assets		8,500
Property and equipment, accumulated depreciation		68,400		62,900
Depreciation expense		$ 7,800		8,000	$ 6,900
Internal Revenue Service (IRS)
Qualified Deposit Assets With The U.S. Department Of Treasury Expected to be Refunded				$ 57,200

[1] Internal-use software, at cost, has been reduced by accumulated amortization of $73.5 million and $60.3 million at December 31, 2019 and 2018, respectively, as well as $3.8 million of impairment charges in 2019 and $5.1 million of impairment charges in 2018. Amortization expense was $13.0 million, $11.4 million and $10.7 million for the years ended December 31, 2019, 2018 and 2017, respectively.

[2] Classified in other assets in our consolidated balance sheets. See Note 9.

[3] Operating lease right-of-use assets and liabilities of $2.6 million and $3.8 million, respectively, are classified as held for sale and are excluded from the amounts in this disclosure.

[4] Represents right-of-use assets recognized as a result of our adoption, as of January 1, 2019, of the new accounting and disclosure requirements for leases of property, plant and equipment. See Note 2 for additional information. Right-of-use assets are shown less accumulated amortization of $8.5 million at December 31, 2019.

[5] Property and equipment at cost, less accumulated depreciation of $68.4 million and $62.9 million at December 31, 2019 and 2018, respectively. Depreciation expense was $7.8 million, $8.0 million and $6.9 million for the years ended December 31, 2019, 2018 and 2017, respectively.

[6] Related to the sale of Clayton. See Notes 4 and 7 for additional information on assets held for sale. Liabilities held for sale at December 31, 2019 are included in other liabilities on our consolidated balance sheets.

[7] During the year ended December 31, 2019, current federal income tax receivable was reduced by our receipt of the remaining $57.2 million refund from amounts on deposit with the IRS related to the settlement of the IRS Matter.