CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net income	$ 10,588	$ 7,253
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of acquisition-related intangible assets	161	161
Depreciation & amortization	2,194	2,172
Stock-based compensation expense	2,365	1,983
Deferred income taxes	(426)	(407)
(Gain) loss on disposal of property and equipment	(2)	2
Changes in operating assets and liabilities:
(Increase) in trade accounts receivable, net	(3,844)	(2,264)
(Increase) in prepaid expenses & other current assets	(2,169)	(280)
(Increase) decrease in other assets	10	(47)
(Decrease) in accounts payable	(2,156)	(4,464)
Increase (decrease) in accrued expenses	(277)	123
Increase (decrease) in other current liabilities	(181)	951
Increase in other long-term liabilities	151	267
Net cash provided by operating activities	6,414	5,450
Cash flows from investing activities:
Purchases of property and equipment	(2,573)	(2,184)
Capitalized internal use software development costs	(192)	(270)
Net cash used in investing activities	(2,765)	(2,454)
Cash flows from financing activities:
Cash dividends on common stock		(19,312)
Proceeds from employee common stock purchases	652	682
Proceeds from exercise of employee stock options		17
Tax deductions related to stock-based compensation	1,012	61
Net cash provided by (used in) financing activities	1,664	(18,552)
Net increase (decrease) in cash and cash equivalents	5,313	(15,556)
Cash and cash equivalents, beginning of period	51,687	68,632
Cash and cash equivalents, end of period	57,000	53,076
Other cash flow information:
Income taxes paid	$ 7,145	$ 3,137