Summary Of Significant Accounting Policies (Investments And Funds Held For Customers) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended			12 Months Ended
	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Available for Sale Securities Debt Effective Maturity				3 years 1 month 6 days
Proceeds from Sale of Available-for-sale Securities	$ 1,825		$ 32,053	$ 16,955		$ 103,545
Cash and Cash Equivalents, Amortized Cost	14,155	[1]		14,155	[1]		13,867	[1]
Cash And Cash Equivalents Unrealized Gain Loss				0			0
Money market funds	14,155			14,155			13,867
Money market funds, Amortized Cost							15,084	[1]
Money Market Funds, Unrealized Gain Loss							0
Total securities available for sale, Amortized Cost	77,913	[1]		77,913	[1]		59,057	[1]
Total securities available for sale, Unrealized Gain (Loss)				(2,436)			264
Total securities available for sale, Fair Value	75,477			75,477			59,321
Total investments and funds held for clients, Amortized Cost	95,306	[1]		95,306	[1]		88,008	[1]
Total investments and funds held for clients, Unrealized Gain (Loss)				(2,436)			264
Total investments and funds held for clients, fair value	92,870			92,870			88,272
U.S. Government Agency [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	68,631	[1]		68,631	[1]		48,340	[1]
Total securities available for sale, Unrealized Gain (Loss)				(2,466)			156
Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	3,529	[1]		3,529	[1]		820	[1]
Total securities available for sale, Unrealized Gain (Loss)				13			28
Corporate fixed income - financial [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	3,000	[1]		3,000	[1]		5,010	[1]
Total securities available for sale, Unrealized Gain (Loss)				4			16
Corporate fixed income - industrial [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	1,753	[1]		1,753	[1]		3,887	[1]
Total securities available for sale, Unrealized Gain (Loss)				13			49
Certificates of deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	1,000	[1]		1,000	[1]		1,000	[1]
Total securities available for sale, Unrealized Gain (Loss)				0			15
Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Money Market Funds, Fair Value	3,238			3,238			15,084
Fair Value, Measurements, Recurring [Member] | U.S. Government Agency [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Fair Value	66,165			66,165			48,496
Fair Value, Measurements, Recurring [Member] | Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Fair Value	3,542			3,542			848
Fair Value, Measurements, Recurring [Member] | Corporate fixed income - financial [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Fair Value	3,004			3,004			5,026
Fair Value, Measurements, Recurring [Member] | Corporate fixed income - industrial [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Fair Value	1,766			1,766			3,936
Fair Value, Measurements, Recurring [Member] | Certificates of deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Fair Value	1,000			1,000			1,015
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Money Market Funds, Fair Value	3,238			3,238			15,084
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | U.S. Government Agency [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Fair Value	66,165			66,165			48,496
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Fair Value	3,542			3,542			848
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Corporate fixed income - financial [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Fair Value	3,004			3,004			5,026
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Corporate fixed income - industrial [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Fair Value	1,766			1,766			3,936
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Certificates of deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Fair Value	$ 1,000			$ 1,000			$ 1,015

[1] (1) Amortized cost represents the original purchase price of the investments, plus or minus any amortized purchase premiums or accreted purchase discounts.