Note 21 - Supplemental Guarantor Information - Supplemental Condensed Combining Statement of Cash Flows (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017
Net cash provided by (used in) operating activities	$ (59,246)	$ 74,109
Net cash provided by (used in) investing activities	26,228	108,047
Payments from (advances to) subsidiaries
Mortgage repurchase facility	(21,556)	(49,382)
Dividend payments	(50,733)	(38,793)
Proceeds from exercise of stock options	9,859	8,503
Net cash provided by (used in) financing activities	(62,430)	(82,302)
Net increase (decrease) in cash and cash equivalents	(95,448)	99,854
Beginning of period	514,240	286,687
Cash and cash equivalents	418,792	386,541
Payments of deferred financing costs		(2,630)
Reportable Legal Entities [Member] \| Parent Company [Member]
Net cash provided by (used in) operating activities	(6,232)	26,918
Net cash provided by (used in) investing activities	(65,259)	97,540
Payments from (advances to) subsidiaries
Mortgage repurchase facility
Dividend payments	(50,733)	(38,793)
Proceeds from exercise of stock options	9,859	8,503
Net cash provided by (used in) financing activities	(40,874)	(32,920)
Net increase (decrease) in cash and cash equivalents	(112,365)	91,538
Beginning of period	468,718	255,679
Cash and cash equivalents	356,353	347,217
Payments of deferred financing costs		(2,630)
Reportable Legal Entities [Member] \| Guarantor Subsidiaries [Member]
Net cash provided by (used in) operating activities	(99,100)	(16,078)
Net cash provided by (used in) investing activities	(19,135)	(198)
Payments from (advances to) subsidiaries	117,644	21,995
Mortgage repurchase facility
Dividend payments
Proceeds from exercise of stock options
Net cash provided by (used in) financing activities	117,644	21,995
Net increase (decrease) in cash and cash equivalents	(591)	5,719
Beginning of period	13,051	7,186
Cash and cash equivalents	12,460	12,905
Payments of deferred financing costs
Reportable Legal Entities [Member] \| Non-Guarantor Subsidiaries [Member]
Net cash provided by (used in) operating activities	46,086	63,269
Net cash provided by (used in) investing activities	(3,892)	(254)
Payments from (advances to) subsidiaries	(3,130)	(11,036)
Mortgage repurchase facility	(21,556)	(49,382)
Dividend payments
Proceeds from exercise of stock options
Net cash provided by (used in) financing activities	(24,686)	(60,418)
Net increase (decrease) in cash and cash equivalents	17,508	2,597
Beginning of period	32,471	23,822
Cash and cash equivalents	49,979	26,419
Payments of deferred financing costs
Consolidation, Eliminations [Member]
Net cash provided by (used in) operating activities
Net cash provided by (used in) investing activities	114,514	10,959
Payments from (advances to) subsidiaries	(114,514)	(10,959)
Mortgage repurchase facility
Dividend payments
Proceeds from exercise of stock options
Net cash provided by (used in) financing activities	(114,514)	(10,959)
Net increase (decrease) in cash and cash equivalents
Beginning of period
Cash and cash equivalents
Payments of deferred financing costs

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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