CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 8,162	$ 6,517
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation expense	4,951	3,602
Depreciation	4,929	3,888
Amortization of intangibles	953	1,168
Deferred income taxes	(58)	138
Provision for doubtful accounts	230	65
CHANGES IN OPERATING ASSETS AND LIABILITIES:
Accounts receivable	(3,434)	(6,620)
Prepaid expenses and other current assets	2,080	44
Deferred implementation costs	(66)	(23)
Security deposits	146	(164)
Other Assets	116
Accounts payable	470	(957)
Accrued expenses	(1,881)	(966)
Deferred revenue	849	975
Net cash provided by operating activities	17,447	7,667
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment, including capitalized software	(6,156)	(5,977)
Acquisition of NuConomy, net of cash acquired		(789)
Acquisition of Proficient	(75)	(95)
Net cash used in investing activities	(6,231)	(6,861)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase of common stock		(3,650)
Excess tax benefit from the exercise of employee stock options	1,447	113
Proceeds from issuance of common stock in connection with the exercise of options	6,886	7,629
Net cash provided by financing activities	8,333	4,092
Effect of foreign exchange rate changes on cash and cash equivalents	(23)	(113)
Net increase in cash and cash equivalents	19,526	4,785
Cash and cash equivalents at the beginning of the period	61,336	45,572
Cash and cash equivalents at the end of the period	$ 80,862	$ 50,357