Note 6 - Goodwill and Other Intangible Assets, Net Schedule of Goodwill (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		12 Months Ended
	Oct. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2014
Mortgage and Real Estate Services Segment [Member]
Goodwill [Line Items]
Goodwill, Gross, Beginning of Period		$ 197,265	$ 194,027	$ 194,027
Goodwill, Acquired During Period		0		3,238
Goodwill, Gross, End of Period		197,265		197,265
Goodwill, Impaired, Accumulated Impairment Loss, Beginning of Period		(2,095)	(2,095)	(2,095)
Goodwill, Impairment Loss		0		0
Goodwill, Impaired, Accumulated Impairment Loss, End of Period		(2,095)		(2,095)
Goodwill, Net		$ 195,170		$ 195,170	$ 191,932
Clayton Holdings, LLC [Member] | Series of Individually Immaterial Business Acquisitions [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	$ 800		$ 2,400