Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 2,009	$ 2,149
Loans held for sale	$ 84,168	$ 40,886
Common units issued (in shares)	27,355,527	27,566,200
Common units outstanding (in shares)	27,355,527	27,566,200
Common units held in treasury (in shares)	9,321,681	8,964,049
Common units held in treasury, at cost	$ 144,738	$ 138,363