SUPPLEMENTAL CASH FLOW INFORMATION (Supplemental Disclosure of Cash Flow information) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash (paid) received:
Interest	$ (1,270)	$ (1,548)
Income tax payments	(933)	(1,306)
Refund of income taxes	100	109
Dividends declared per common share	$ 0.10	$ 0.09
Non-cash activities:
Repurchases of common stock from employees in exchange for the payment of income taxes and option exercises	68	1,709
Issuance of treasury stock for the Company's investment savings plan	273	413
Common stock issued to a former director in exchange for vested director units	0	135
Leasehold improvements paid by the landlord	1,496	0
Effects from the deconsolidation of Apidos Capital Management, LLC (Apidos) (1):
Receivables from managed entities	0	715
Investment in unconsolidated entities	0	(1,824)
Other assets	0	20
Accrued expenses and other liabilities	$ 0	$ (938)