Consolidated Statements of Financial Condition (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Allowance for accounts receivable	$ 62	$ 3
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	4,855,000us-gaap_PreferredStockSharesAuthorized	4,855,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Preferred stock, shares outstanding	0us-gaap_PreferredStockSharesOutstanding	0us-gaap_PreferredStockSharesOutstanding
Common stock, par value	$ 0.003	$ 0.003
Common stock, shares authorized	110,000,000us-gaap_CommonStockSharesAuthorized	110,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	39,597,228us-gaap_CommonStockSharesIssued	39,460,066us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	37,339,484us-gaap_CommonStockSharesOutstanding	37,318,722us-gaap_CommonStockSharesOutstanding
Treasury stock, shares	2,258,744us-gaap_TreasuryStockShares	2,141,344us-gaap_TreasuryStockShares
Series A Preferred Stock [Member]
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	110,000	110,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common Stock Non-Voting [Member]
Common stock, par value	$ 0.003	$ 0.003
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	0	0
Common stock, shares outstanding	0	0

For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

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