Note 21 - Supplemental Guarantor Information - Supplemental Condensed Combining Statement of Cash Flows (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018
Net cash provided by (used in) operating activities	$ 55,665	$ (56,188)
Net cash provided by (used in) investing activities	(13,919)	34,750
Payments from (advances to) subsidiaries	0	0
Mortgage repurchase facility	(33,776)	(31,521)
Dividend payments	(35,636)	(33,793)
Proceeds from exercise of stock options	17,328	5,835
Net cash provided by (used in) financing activities	(52,084)	(59,479)
Net increase (decrease) in cash and cash equivalents	(10,338)	(80,917)
Beginning of period	470,139	514,240
Cash and cash equivalents	459,801	433,323
Reportable Legal Entities [Member] \| Parent Company [Member]
Net cash provided by (used in) operating activities	(22,861)	(3,430)
Net cash provided by (used in) investing activities	15,136	(63,986)
Payments from (advances to) subsidiaries	0	0
Mortgage repurchase facility	0	0
Dividend payments	(35,636)	(33,793)
Proceeds from exercise of stock options	17,328	5,835
Net cash provided by (used in) financing activities	(18,308)	(27,958)
Net increase (decrease) in cash and cash equivalents	(26,033)	(95,374)
Beginning of period	410,127	468,718
Cash and cash equivalents	384,094	373,344
Reportable Legal Entities [Member] \| Guarantor Subsidiaries [Member]
Net cash provided by (used in) operating activities	26,173	(96,911)
Net cash provided by (used in) investing activities	(13,363)	(12,786)
Payments from (advances to) subsidiaries	(4,892)	108,964
Mortgage repurchase facility	0	0
Dividend payments	0	0
Proceeds from exercise of stock options	0	0
Net cash provided by (used in) financing activities	(4,892)	108,964
Net increase (decrease) in cash and cash equivalents	7,918	(733)
Beginning of period	10,960	13,051
Cash and cash equivalents	18,878	12,318
Reportable Legal Entities [Member] \| Non-Guarantor Subsidiaries [Member]
Net cash provided by (used in) operating activities	52,353	44,153
Net cash provided by (used in) investing activities	(120)	(2,218)
Payments from (advances to) subsidiaries	(10,680)	4,776
Mortgage repurchase facility	(33,776)	(31,521)
Dividend payments	0	0
Proceeds from exercise of stock options	0	0
Net cash provided by (used in) financing activities	(44,456)	(26,745)
Net increase (decrease) in cash and cash equivalents	7,777	15,190
Beginning of period	49,052	32,471
Cash and cash equivalents	56,829	47,661
Consolidation, Eliminations [Member]
Net cash provided by (used in) operating activities	0	0
Net cash provided by (used in) investing activities	(15,572)	113,740
Payments from (advances to) subsidiaries	15,572	(113,740)
Mortgage repurchase facility	0	0
Dividend payments	0	0
Proceeds from exercise of stock options	0	0
Net cash provided by (used in) financing activities	15,572	(113,740)
Net increase (decrease) in cash and cash equivalents	0	0
Beginning of period	0	0
Cash and cash equivalents	$ 0	$ 0

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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