Note 24 - Supplemental Guarantor Information - Supplemental Condensed Combining Statement of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net cash provided by (used in) operating activities	$ (7,906)	$ 70,506	$ 115,945
Net cash provided by (used in) investing activities	20,214	57,790	9,218
Financing Activities:
Payments from (advances to) subsidiaries
Advances (payments) on mortgage repurchase facility, net	4,475	(2,145)	25,874
Dividend payments	(67,718)	(51,897)	(49,088)
Payments of deferred financing costs	(3,026)	(2,665)
Proceeds from exercise of stock options	9,860	9,501
Net cash provided by (used in) financing activities	(56,409)	99,257	(23,214)
Net increase (decrease) in cash and cash equivalents	(44,101)	227,553	101,949
Beginning of period	514,240	286,687	184,738
Cash and cash equivalents	470,139	514,240	286,687
Net cash provided by (used in) operating activities	(7,906)	70,506	115,945
Net cash provided by (used in) investing activities	20,214	57,790	9,218
Proceeds from issuance of senior notes		146,463
Excess tax benefits from stock-based compensation		(2,665)
Net cash provided by (used in) operating activities	(7,906)	70,506	115,945
Net cash provided by (used in) investing activities	20,214	57,790	9,218
Payments from (advances to) subsidiaries
Dividend payments	(67,718)	(51,897)	(49,088)
Proceeds from exercise of stock options	9,860	9,501
Net cash provided by (used in) financing activities	(56,409)	99,257	(23,214)
Reportable Legal Entities [Member] \| Parent Company [Member]
Net cash provided by (used in) operating activities	10,925	30,815	(4,807)
Net cash provided by (used in) investing activities	(8,632)	80,822	168,329
Financing Activities:
Payments from (advances to) subsidiaries
Advances (payments) on mortgage repurchase facility, net
Dividend payments	(67,718)	(51,897)	(49,088)
Payments of deferred financing costs	(3,026)
Proceeds from exercise of stock options	9,860	9,501
Net cash provided by (used in) financing activities	(60,884)	101,402	(49,088)
Net increase (decrease) in cash and cash equivalents	(58,591)	213,039	114,434
Beginning of period	468,718	255,679	141,245
Cash and cash equivalents	410,127	468,718	255,679
Net cash provided by (used in) operating activities	10,925	30,815	(4,807)
Net cash provided by (used in) investing activities	(8,632)	80,822	168,329
Proceeds from issuance of senior notes		146,463
Excess tax benefits from stock-based compensation		(2,665)
Net cash provided by (used in) operating activities	10,925	30,815	(4,807)
Net cash provided by (used in) investing activities	(8,632)	80,822	168,329
Payments from (advances to) subsidiaries
Dividend payments	(67,718)	(51,897)	(49,088)
Proceeds from exercise of stock options	9,860	9,501
Net cash provided by (used in) financing activities	(60,884)	101,402	(49,088)
Reportable Legal Entities [Member] \| Guarantor Subsidiaries [Member]
Net cash provided by (used in) operating activities	(47,132)	8,991	124,957
Net cash provided by (used in) investing activities	(25,415)	(454)	(1,481)
Financing Activities:
Payments from (advances to) subsidiaries	70,456	(2,672)	(123,137)
Advances (payments) on mortgage repurchase facility, net
Dividend payments
Payments of deferred financing costs
Proceeds from exercise of stock options
Net cash provided by (used in) financing activities	70,456	(2,672)	(123,137)
Net increase (decrease) in cash and cash equivalents	(2,091)	5,865	339
Beginning of period	13,051	7,186	6,847
Cash and cash equivalents	10,960	13,051	7,186
Net cash provided by (used in) operating activities	(47,132)	8,991	124,957
Net cash provided by (used in) investing activities	(25,415)	(454)	(1,481)
Proceeds from issuance of senior notes
Excess tax benefits from stock-based compensation
Net cash provided by (used in) operating activities	(47,132)	8,991	124,957
Net cash provided by (used in) investing activities	(25,415)	(454)	(1,481)
Payments from (advances to) subsidiaries	70,456	(2,672)	(123,137)
Dividend payments
Proceeds from exercise of stock options
Net cash provided by (used in) financing activities	70,456	(2,672)	(123,137)
Reportable Legal Entities [Member] \| Non-Guarantor Subsidiaries [Member]
Net cash provided by (used in) operating activities	28,301	30,700	(4,205)
Net cash provided by (used in) investing activities	(2,639)	(253)	(23,779)
Financing Activities:
Payments from (advances to) subsidiaries	(13,556)	(19,653)	(10,714)
Advances (payments) on mortgage repurchase facility, net	4,475	(2,145)	25,874
Dividend payments
Payments of deferred financing costs
Proceeds from exercise of stock options
Net cash provided by (used in) financing activities	(9,081)	(21,798)	15,160
Net increase (decrease) in cash and cash equivalents	16,581	8,649	(12,824)
Beginning of period	32,471	23,822	36,646
Cash and cash equivalents	49,052	32,471	23,822
Net cash provided by (used in) operating activities	28,301	30,700	(4,205)
Net cash provided by (used in) investing activities	(2,639)	(253)	(23,779)
Proceeds from issuance of senior notes
Excess tax benefits from stock-based compensation
Net cash provided by (used in) operating activities	28,301	30,700	(4,205)
Net cash provided by (used in) investing activities	(2,639)	(253)	(23,779)
Payments from (advances to) subsidiaries	(13,556)	(19,653)	(10,714)
Dividend payments
Proceeds from exercise of stock options
Net cash provided by (used in) financing activities	(9,081)	(21,798)	15,160
Consolidation, Eliminations [Member]
Net cash provided by (used in) operating activities
Net cash provided by (used in) investing activities	56,900	(22,325)	(133,851)
Financing Activities:
Payments from (advances to) subsidiaries	(56,900)	22,325	133,851
Advances (payments) on mortgage repurchase facility, net
Dividend payments
Payments of deferred financing costs
Proceeds from exercise of stock options
Net cash provided by (used in) financing activities	(56,900)	22,325	133,851
Net increase (decrease) in cash and cash equivalents
Beginning of period
Cash and cash equivalents
Net cash provided by (used in) operating activities
Net cash provided by (used in) investing activities	56,900	(22,325)	(133,851)
Proceeds from issuance of senior notes
Excess tax benefits from stock-based compensation
Net cash provided by (used in) operating activities
Net cash provided by (used in) investing activities	56,900	(22,325)	(133,851)
Payments from (advances to) subsidiaries	(56,900)	22,325	133,851
Dividend payments
Proceeds from exercise of stock options
Net cash provided by (used in) financing activities	$ (56,900)	$ 22,325	$ 133,851

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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