Note 3 - Segment Reporting Revenue (Details) - USD ($)		3 Months Ended			6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019		Jun. 30, 2020	Jun. 30, 2019		Dec. 31, 2019
Net gains (losses) on investments and other financial instruments		$ 47,276,000	$ 12,540,000		$ 25,249,000	$ 34,453,000
Revenues		364,441,000	394,964,000		693,522,000	758,593,000
Services Revenue, Net		28,075,000	39,303,000		60,002,000	72,056,000
Other Nonoperating Income		247,000	0		247,000	0
Mortgage segment
Revenues	[1]	286,943,000	336,644,000	[2]	602,027,000	639,014,000	[2]
Real Estate segment
Revenues	[1]	26,092,000	27,627,000		54,675,000	50,650,000
Accounts and notes receivable related to revenue service contracts		17,900,000			17,900,000			$ 10,800,000
Bad debt expense		0	0		0	0
All Other activities segment
Revenues		6,493,000	18,519,000		14,126,000	35,358,000
Valuation services
Services Revenue, Net		7,794,000	13,358,000		19,638,000	26,064,000
Title services
Services Revenue, Net		9,059,000	4,999,000		16,364,000	6,599,000
Asset management services
Services Revenue, Net		6,964,000	6,461,000		13,338,000	12,733,000
Mortgage services
Services Revenue, Net		3,918,000	1,872,000		7,051,000	2,516,000
Real estate agent services
Services Revenue, Net		340,000	72,000		750,000	72,000
All Other services
Services Revenue, Net		0	12,541,000		2,861,000	24,072,000
Operating Segments
Revenues		313,035,000	364,271,000		656,702,000	689,664,000
Intersegment Eliminations
Revenues		$ (2,610,000)	$ (366,000)		$ (2,802,000)	$ (882,000)

[1] Includes immaterial inter-segment revenues for the three and six months ended June 30, 2020 and 2019.

[2] Includes a cumulative adjustment to unearned premiums recorded in the second quarter of 2019 as further described above.