Summary Of Significant Accounting Policies (Investments And Funds Held For Customers) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Sale and maturity of securities available for sale	$ 22,960		$ 137,999		$ 80
Cash and Cash Equivalents, Amortized Cost	16,147	[1]	13,867	[1]
Cash And Cash Equivalents Unrealized Gain Loss	0		0
Money market funds	16,147		13,867
Money Market Funds, Amortized Cost	11,180	[1]	15,084
Money Market Funds, Unrealized Gain Loss	0		0
Money Market Funds, at Carrying Value	11,180
Total securities available for sale, Amortized Cost	71,883	[1]	59,057	[1]
Total securities available for sale, Unrealized Gain (Loss)	(2,522)		264
Available-for-sale Securities	69,361		59,321
Total investments and funds held for clients, Amortized Cost	99,210	[1]	88,008	[1]
Total investments and funds held for clients, Unrealized Gain (Loss)	(2,522)		264
Total investments and funds held for clients, fair value	96,688		88,272
Gross realized gains	19		461
Available-for-sale Securities, Gross Realized Losses	0		0
U.S. Government Agency [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	63,633	[1]	48,340	[1]
Total securities available for sale, Unrealized Gain (Loss)	(2,555)		156
Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	3,497	[1]	820	[1]
Total securities available for sale, Unrealized Gain (Loss)	21		28
Corporate fixed income - financial [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	3,000	[1]	5,010	[1]
Total securities available for sale, Unrealized Gain (Loss)	0		16
Corporate fixed income - industrial [Member]
Schedule of Available-for-sale Securities [Line Items]
Total securities available for sale, Amortized Cost	753	[1]	3,887	[1]
Total securities available for sale, Unrealized Gain (Loss)	12		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]
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, at Carrying Value	11,180		15,084
Fair Value, Measurements, Recurring [Member] | U.S. Government Agency [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities	61,078		48,496
Fair Value, Measurements, Recurring [Member] | Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities	3,518		848
Fair Value, Measurements, Recurring [Member] | Corporate fixed income - financial [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities	3,000		5,026
Fair Value, Measurements, Recurring [Member] | Corporate fixed income - industrial [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities	765		3,936
Fair Value, Measurements, Recurring [Member] | Certificates of deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities	1,000		1,015
Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Schedule of Available-for-sale Securities [Line Items]
Money Market Funds, at Carrying Value	11,180		15,084
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | U.S. Government Agency [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities	61,078		48,496
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities	3,518		848
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Corporate fixed income - financial [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities	3,000		5,026
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Corporate fixed income - industrial [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities	765		3,936
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Certificates of deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities	$ 1,000		$ 1,015

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