Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Sep. 15, 2015
Allowance for credit losses	$ 769	$ 794
Amounts pledged	655,683	438,385
Furniture equipment and leasehold improvements, net accumulated depreciation	82,826	84,073
Net deferred tax assets	47,597	59,062
Notes Receivable, Net Accumulated Amortization	24,705	24,826
Notes Receivable, Net Allowance for Uncollectibles	7,975	6,784
Unamortized debt issuance expense	$ 1,163	$ 648
Common Class A [Member]
Common stock, authorized	50,000,000	50,000,000
Common stock, shares issued	13,139,203	13,261,095
Common stock, shares outstanding	13,139,203	13,261,095	13,238,486	13,348,369
Common stock, par value	$ 0.001	$ 0.001
Class B Stock
Common stock, authorized	99,665	99,665
Common stock, shares issued	99,665	99,665
Common stock, shares outstanding	99,665	99,665
Common stock, par value	$ 0.001	$ 0.001