Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	3 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net income	$ 18,983	$ 12,092
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	1,244	962
Amortization of capitalized software costs	1,925	1,669
Amortization of other intangibles	901	765
Provision for bad debts	980	850
Share-based compensation	956	1,065
Deferred income tax benefit		(262)
Tax benefit associated with stock options	852	175
Excess tax benefit from share-based compensation	(852)	(175)
Changes in assets and liabilities, net of amounts acquired:
Accounts receivable	(9,651)	(4,924)
Inventories	(212)	(53)
Income taxes receivable		2,953
Other current assets	57	278
Other assets	40	(323)
Accounts payable	(571)	1,181
Deferred revenue	3,245	(214)
Accrued compensation and related benefits	(346)	(1,355)
Income taxes payable	4,359	3,843
Other current liabilities	(1,182)	721
Deferred compensation	296	71
Other noncurrent liabilities	509	47
Net cash provided by operating activities	21,533	19,366
Cash flows from investing activities:
Additions to capitalized software costs	(2,513)	(2,545)
Additions to equipment and improvements	(2,423)	(878)
Purchase of IntraNexus	(3,279)
Net cash used in investing activities	(8,215)	(3,423)
Cash flows from financing activities:
Excess tax benefit from share-based compensation	852	175
Proceeds from exercise of stock options	3,427	1,144
Dividends paid	(10,160)	(8,665)
Net cash used in financing activities	(5,881)	(7,346)
Net increase in cash and cash equivalents	7,437	8,597
Cash and cash equivalents at beginning of period	116,617	84,611
Cash and cash equivalents at end of period	124,054	93,208
Supplemental disclosures of cash flow information:
Cash paid during the period for income taxes, net of refunds	4,668	276
Non-cash investing and financing activities:
Unrealized loss on marketable securities, net of tax	(10)
Common stock issued at fair value for Opus earnout settlement	11,887
Effective April 29, 2011, the company acquired IntraNexus in a transaction summarized as follows:
Cash paid	(3,279)
Purchase price holdback	$ (125)

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A132

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration