Summary Of Significant Accounting Policies (Investments And Funds Held For Customers) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Schedule of Available-for-sale Securities [Line Items]
Money market funds, Amortized Cost	$ 21,957
Money market funds, Fair Value	21,957
Total securities available for sale, Amortized Cost	96,368
Total securities available for sale, Unrealized Gain (Loss)	211
Total securities available for sale, Fair Value	96,579
Total investments and funds held for clients, Amortized Cost	118,325
Total investments and funds held for clients, Unrealized Gain (Loss)	211
Total investments and funds held for clients, Fair Value	118,536	100,543	[1]
U.S. Government Agency [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	74,721
Total securities available for sale, Unrealized Gain (Loss)	172
Total investments and funds held for clients, Fair Value	74,893
Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	425
Total investments and funds held for clients, Fair Value	425
Corporate Fixed Income - Financial [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	11,139
Total securities available for sale, Unrealized Gain (Loss)	15
Total investments and funds held for clients, Fair Value	11,154
Corporate Fixed Income - Industrial [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	6,495
Total securities available for sale, Unrealized Gain (Loss)	23
Total investments and funds held for clients, Fair Value	6,518
Corporate Fixed Income - Utility [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	2,088
Total securities available for sale, Unrealized Gain (Loss)	4
Total investments and funds held for clients, Fair Value	2,092
Certificates Of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	1,500
Total securities available for sale, Unrealized Gain (Loss)	(3)
Total investments and funds held for clients, Fair Value	$ 1,497

[1] Represents amounts held in money market funds.