Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013		Mar. 31, 2012		Mar. 31, 2011	Mar. 31, 2013 Opus [Member]	Mar. 31, 2012 Opus [Member]	Mar. 31, 2011 Opus [Member]	Mar. 31, 2013 CQI Solutions [Member]	Mar. 31, 2012 CQI Solutions [Member]	Mar. 31, 2011 CQI Solutions [Member]	Mar. 31, 2013 IntraNexus [Member]	Mar. 31, 2012 IntraNexus [Member]	Mar. 31, 2011 IntraNexus [Member]	Mar. 31, 2013 ViaTrack [Member]	Mar. 31, 2012 ViaTrack [Member]	Mar. 31, 2011 ViaTrack [Member]	Mar. 31, 2013 Poseidon [Member]	Mar. 31, 2012 Poseidon [Member]	Mar. 31, 2011 Poseidon [Member]	Mar. 31, 2013 Matrix	Mar. 31, 2012 Matrix	Mar. 31, 2011 Matrix
Cash flows from operating activities:
Net income	$ 42,724		$ 75,657		$ 61,606
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	6,928		5,195		4,304
Amortization of capitalized software costs	9,668		8,254		7,091
Amortization of other intangibles	7,559	[1]	4,501	[1]	3,255
Provision for bad debts	6,885		5,715		3,780
Provision (recovery) for inventory obsolescence	193		43		27
Share-based compensation	2,327		3,321		3,748
Deferred income tax benefit	(9,565)		(8,025)		(4,194)
Excess tax benefit from share-based compensation	157		(4,145)		(1,524)
Change in fair value of contingent consideration	1,272		0		789
Impairment of goodwill	17,400		0		0
Loss (gain) on disposal of equipment and improvements	0		73		(33)
Changes in assets and liabilities, net of amounts acquired:
Accounts receivable	(7,988)		(10,389)		(36,094)
Inventories	339		(1,024)		1,052
Income taxes receivable	2,628		(2,628)		2,953
Other current assets	(4,073)		(2,955)		(3,746)
Other assets	(2,777)		(841)		(1,817)
Accounts payable	6,223		(2,184)		3,344
Deferred revenue	(17,993)		5,993		13,211
Accrued compensation and related benefits	45		1,623		1,296
Income taxes payable	1,082		615		5,054
Other current liabilities	9,079		(1,910)		12,560
Deferred compensation	312		1,009		605
Other noncurrent liabilities	(4,384)		207		(6,950)
Net cash provided by operating activities	68,041		78,105		70,317
Cash flows from investing activities:
Additions to capitalized software costs	(29,455)		(13,098)		(10,695)
Additions to equipment and improvements	9,969		10,323		6,804
Proceeds for disposal of equipment and improvements	0		11		336
Proceeds from sale of marketable securities	0		0		7,700
Purchase of marketable securities	(7,100)		0		(1,120)
Cash acquired from Acquisition									0	222	0				0	10	0
Purchase of CQI solutions									0	(2,737)	0
Payment for acquiring businesses												0	(3,279)	0	0	(5,710)	0	(2,033)	0	0	(5,073)	0	0
Net cash used in investing activities	(53,630)		(34,904)		(10,583)
Cash flows from financing activities:
Excess tax benefit from share-based compensation	84		4,145		1,524
Proceeds from exercise of stock options	948		12,789		5,717
Dividends paid	(41,535)		(40,989)		(34,716)
Payment of contingent consideration related to acquisitions	(2,353)		(1,319)		(253)
Net cash used in financing activities	(42,856)		(25,374)		(27,728)
Net increase in cash and cash equivalents	(28,445)		17,827		32,006
Cash and cash equivalents at beginning of period	134,444		116,617		84,611
Cash and cash equivalents at end of period	105,999		134,444		116,617
Supplemental disclosures of cash flow information:
Cash paid during the period for income taxes, net of refunds	31,656		50,605		29,044
Non-cash investing activities:
Tenant improvement allowance received from landlord	965		0		1,970
Common stock issued at fair value for Opus earnout settlement						0	11,888	0
Issuance of stock options in connection with the acquisition of PMP															3,000	0	0
Effective November 14, 2011, July 26, 2011, April 29, 2011, February 10, 2010, August 12, 2009, the company acquired ViaTrack, CQI Solutions, IntraNexus, Opus and Sphere respectively in a transaction summarized as follows:
Fair value of net assets acquired									0	11,417	0	0	4,524	0	0	11,048	0	2,551	0	0	14,587	0	0
Cash paid									0	(2,737)	0	0	(3,279)	0	0	(5,710)	0	(2,033)	0	0	(5,073)	0	0
Common Stock issued at fair value									0	(2,864)	0				0	(1,068)	0	0			(3,953)	0	0
Noncash or Part Noncash Acquisition, Purchase Price Holdback									0	(600)	0	0	(125)	0	0	(1,187)	0	(500)	0	0	(853)	0	0
Fair value of contingent consideration	(5,336)		(6,556)						0	2,346	0	0	800	0	0	2,958	0				2,862	0	0
Fair value of non-compete agreement (liability)																					(1,100)	0	0
Liabilities assumed									$ 0	$ 2,870	$ 0	$ 0	$ 320	$ 0	$ 0	$ 125	$ 0	$ 18	$ 0	$ 0	$ 746	$ 0	$ 0

[1] Amortization of the customer relationships and trade name intangible assets is included in operating expenses and amortization of the software technology intangible assets is included in cost of revenue for software and hardware.