Consolidated Balance Sheets (unaudited) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 3,041	$ 2,512
Loans held for sale	$ 68,756	$ 225,013
Common units issued (in shares)	25,013,274	25,023,128
Common units outstanding (in shares)	25,013,274	25,023,128
Common units held in treasury (in shares)	12,647,864	12,647,864
Common units held in treasury, at cost	$ 198,781	$ 198,781