Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues:
Healthcare	$ 35,727	$ 29,230
Commuter	14,707	11,992
Other	5,681	3,088
Total revenue	56,115	44,310
Operating expenses:
Cost of revenues (excluding amortization of internal use software)	20,613	17,057
Technology and development	5,817	4,340
Sales and marketing	8,515	7,209
General and administrative	9,209	7,478
Amortization and change in contingent consideration	4,462	4,438
Total operating expenses	48,616	40,522
Income from operations	7,499	3,788
Other income (expense):
Interest income	7	10
Interest expense	(378)	(405)
Loss on revaluation of warrants		(26)
Other income	19	15
Income before income taxes	7,147	3,382
Income tax provision	(2,511)	(1,372)
Net income	4,636	2,010
Accretion of redemption premium expense		(1,523)
Net income attributable to common stockholders	$ 4,636	$ 487
Basic net income per share attributable to common stockholders	$ 0.14	$ 0.32
Diluted net income per share attributable to common stockholders	$ 0.14	$ 0.02
Shares used in basic net income per share calculations	32,226	1,546
Shares used in diluted net income per share calculations	33,841	16,986