Summary Of Business And Significant Accounting Policies Summary of Business And Significant Accounting Policies (Statements of Income (Loss) Restatements) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues:
Healthcare	$ 45,615	$ 43,814	$ 95,985	$ 91,103
Commuter	17,466	16,028	34,842	31,925
COBRA	17,207	12,313	32,613	24,883
Other	4,375	10,602	8,225	20,142
Total revenues	84,663	82,757	171,665	168,053
Operating expenses:
Cost of revenues (excluding amortization of internal use software)	28,429	29,775	59,689	61,846
Technology and development	10,836	11,783	20,667	22,368
Sales and marketing	14,136	12,490	28,056	25,621
General and administrative	15,468	13,119	30,083	26,684
Amortization, impairment and change in contingent consideration	15,364	6,732	22,809	13,011
Employee termination and other charges	313	2,080	313	2,080
Total operating expenses	84,546	75,979	161,617	151,610
Income (loss) from operations	117	6,778	10,048	16,443
Other income (expense):
Interest income	97	17	183	19
Interest expense	(822)	(609)	(1,227)	(1,184)
Other income (expense)	(126)	222	(130)	288
Income (loss) before income taxes	(734)	6,408	8,874	15,566
Income tax (provision) benefit	614	(2,890)	(3,198)	(6,409)
Net income	$ (120)	$ 3,518	$ 5,676	$ 9,157
Net income (loss) per share:
Basic (in dollars per share)	$ 0.00	$ 0.10	$ 0.16	$ 0.26
Diluted (in dollars per share)	$ 0.00	$ 0.10	$ 0.15	$ 0.25
Shares used in computing net income (loss) per share:
Basic (in shares)	36,361	35,761	36,139	35,659
Diluted (in shares)	36,361	36,596	36,862	36,634
Scenario, Previously Reported [Member]
Revenues:
Healthcare	$ 48,070		$ 98,440
Commuter	17,383		34,759
COBRA	17,879		33,285
Other	4,393		8,243
Total revenues	87,725		174,727
Operating expenses:
Cost of revenues (excluding amortization of internal use software)	28,411		59,671
Technology and development	11,157		20,988
Sales and marketing	14,385		28,305
General and administrative	17,130		31,745
Amortization, impairment and change in contingent consideration	11,695		19,140
Employee termination and other charges	313		313
Total operating expenses	83,091		160,162
Income (loss) from operations	4,634		14,565
Other income (expense):
Interest income	97		183
Interest expense	(409)		(814)
Other income (expense)	6		2
Income (loss) before income taxes	4,328		13,936
Income tax (provision) benefit	(1,475)		(5,287)
Net income	$ 2,853		$ 8,649
Net income (loss) per share:
Basic (in dollars per share)	$ 0.08		$ 0.24
Diluted (in dollars per share)	$ 0.08		$ 0.23
Shares used in computing net income (loss) per share:
Basic (in shares)	36,361		36,139
Diluted (in shares)	37,195		36,862
Restatement Adjustment [Member]
Revenues:
Healthcare	$ (2,455)		$ (2,455)
Commuter	83		83
COBRA	(672)		(672)
Other	(18)		(18)
Total revenues	(3,062)		(3,062)
Operating expenses:
Cost of revenues (excluding amortization of internal use software)	18		18
Technology and development	(321)		(321)
Sales and marketing	(249)		(249)
General and administrative	(1,662)		(1,662)
Amortization, impairment and change in contingent consideration	3,669		3,669
Employee termination and other charges	0		0
Total operating expenses	1,455		1,455
Income (loss) from operations	(4,517)		(4,517)
Other income (expense):
Interest income	0		0
Interest expense	(413)		(413)
Other income (expense)	(132)		(132)
Income (loss) before income taxes	(5,062)		(5,062)
Income tax (provision) benefit	2,089		2,089
Net income	$ (2,973)		$ (2,973)
Net income (loss) per share:
Basic (in dollars per share)	$ (0.08)		$ (0.08)
Diluted (in dollars per share)	$ (0.08)		$ (0.08)
Shares used in computing net income (loss) per share:
Basic (in shares)
Diluted (in shares)
Reversal of OPM Revenue [Member] | Restatement Adjustment [Member]
Revenues:
Healthcare	$ (1,100)
Correction of Billing Errors [Member] | Restatement Adjustment [Member]
Revenues:
Healthcare	(700)
Adjustment of Revenue Due to Netting of Healthcare Revenue and Expenses [Member] | Restatement Adjustment [Member]
Revenues:
Healthcare	(600)
Operating expenses:
Cost of revenues (excluding amortization of internal use software)	(600)
Reserve for Uncollectible Customer Obligations [Member] | Restatement Adjustment [Member]
Operating expenses:
Cost of revenues (excluding amortization of internal use software)	600
Adjustment for Reduced Target Attainment Percentages for Share-Based Compensation [Member] | Restatement Adjustment [Member]
Operating expenses:
General and administrative	(1,200)
Re-Valuation of Allowance for Bad Debt [Member] | Restatement Adjustment [Member]
Operating expenses:
General and administrative	(200)
Re-valuation and Write-off of Customer Obligations [Member] | Restatement Adjustment [Member]
Operating expenses:
General and administrative	$ (200)