Note 20 - Supplemental Guarantor Information - Supplemental Condensed Combining Statement of Cash Flows (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017
Net cash provided by (used in) operating activities	$ (56,188)	$ 122,136
Net cash provided by (used in) investing activities	34,750	(1,957)
Payments from (advances to) subsidiaries
Mortgage repurchase facility	(31,521)	(45,358)
Dividend payments	(33,793)	(25,809)
Proceeds from exercise of stock options	5,835	7,304
Net cash provided by (used in) financing activities	(59,479)	(63,863)
Net increase (decrease) in cash and cash equivalents	(80,917)	56,316
Beginning of period	514,240	286,687
Cash and cash equivalents	433,323	343,003
Reportable Legal Entities [Member] \| Parent Company [Member]
Net cash provided by (used in) operating activities	(3,430)	32,086
Net cash provided by (used in) investing activities	(63,986)	41,069
Payments from (advances to) subsidiaries
Mortgage repurchase facility
Dividend payments	(33,793)	(25,809)
Proceeds from exercise of stock options	5,835	7,304
Net cash provided by (used in) financing activities	(27,958)	(18,505)
Net increase (decrease) in cash and cash equivalents	(95,374)	54,650
Beginning of period	468,718	255,679
Cash and cash equivalents	373,344	310,329
Reportable Legal Entities [Member] \| Guarantor Subsidiaries [Member]
Net cash provided by (used in) operating activities	(96,911)	35,754
Net cash provided by (used in) investing activities	(12,786)	(88)
Payments from (advances to) subsidiaries	108,964	(33,340)
Mortgage repurchase facility
Dividend payments
Proceeds from exercise of stock options
Net cash provided by (used in) financing activities	108,964	(33,340)
Net increase (decrease) in cash and cash equivalents	(733)	2,326
Beginning of period	13,051	7,186
Cash and cash equivalents	12,318	9,512
Reportable Legal Entities [Member] \| Non-Guarantor Subsidiaries [Member]
Net cash provided by (used in) operating activities	44,153	54,296
Net cash provided by (used in) investing activities	(2,218)	(59)
Payments from (advances to) subsidiaries	4,776	(9,539)
Mortgage repurchase facility	(31,521)	(45,358)
Dividend payments
Proceeds from exercise of stock options
Net cash provided by (used in) financing activities	(26,745)	(54,897)
Net increase (decrease) in cash and cash equivalents	15,190	(660)
Beginning of period	32,471	23,822
Cash and cash equivalents	47,661	23,162
Consolidation, Eliminations [Member]
Net cash provided by (used in) operating activities
Net cash provided by (used in) investing activities	113,740	(42,879)
Payments from (advances to) subsidiaries	(113,740)	42,879
Mortgage repurchase facility
Dividend payments
Proceeds from exercise of stock options
Net cash provided by (used in) financing activities	(113,740)	42,879
Net increase (decrease) in cash and cash equivalents
Beginning of period
Cash and cash equivalents

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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