Advisory Board 10-K 30 May 14 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Mar. 31, 2014	23-May-14	Sep. 30, 2013
Document Document And Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Mar-14	'	'
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'FY	'	'
Trading Symbol	'ABCO	'	'
Entity Registrant Name	'ADVISORY BOARD CO	'	'
Entity Central Index Key	'0001157377	'	'
Current Fiscal Year End Date	'--03-31	'	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	36,602,102	'
Entity Public Float	'	'	$2,140,496,767

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$23,129	$57,829
Marketable securities, current	2,452	16,611
Membership fees receivable, net	447,897	370,321
Prepaid expenses and other current assets	27,212	15,477
Deferred income taxes, current	5,511	7,664
Total current assets	506,201	467,902
Property and equipment, net	102,457	73,572
Intangible assets, net	33,755	32,381
Deferred incentive compensation and other charges	86,147	73,502
Deferred income taxes, net of current portion	0	2,993
Marketable securities, net of current portion	161,944	140,228
Goodwill	129,424	95,540
Investments in and advances to unconsolidated entities	15,857	6,265
Other non-current assets	5,550	5,550
Total assets	1,041,335	897,933
Current liabilities:	'	'
Deferred revenue, current	459,827	398,541
Accounts payable and accrued liabilities	77,815	75,089
Accrued incentive compensation	28,471	21,033
Total current liabilities	566,113	494,663
Deferred revenue, net of current portion	127,532	104,484
Deferred income taxes, net of current portion	1,556	0
Other long-term liabilities	8,975	15,866
Total liabilities	704,176	615,013
Redeemable noncontrolling interest	100	100
The Advisory Board Company's stockholders' equity:	'	'
Preferred stock, par value $0.01; 5,000,000 shares authorized, zero shares issued and outstanding	0	0
Common stock, par value $0.01; 135,000,000 shares authorized, 35,138,465 and 36,321,895 shares issued as of March 31, 2013 and 2014, respectively, and 35,138,465 and 36,321,825 shares outstanding as of March 31, 2013 and 2014, respectively	363	351
Additional paid-in capital	429,932	375,622
Accumulated deficit	-91,468	-94,306
Accumulated other comprehensive (loss) income	-1,541	1,261
Total stockholders’ equity controlling interest	337,286	282,928
Equity attributable to noncontrolling interests	-227	-108
Total stockholder's equity	337,059	282,820
Total liabilities and stockholders' equity	$1,041,335	$897,933

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2014	Mar. 31, 2013
Statement of Financial Position [Abstract]	'	'
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	135,000,000	135,000,000
Common stock, shares issued	36,321,865	35,138,465
Common stock, shares outstanding	36,321,865	35,138,465

CONSOLIDATED_STATEMENTS_OF_INC

CONSOLIDATED STATEMENTS OF INCOME (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Revenue	$520,596	$450,837	$370,345
Costs and expenses:	'	'	'
Cost of services, excluding depreciation and amortization	272,523	237,605	197,937
Member relations and marketing	96,298	85,264	73,875
General and administrative	74,169	62,185	47,892
Depreciation and amortization	30,420	20,308	14,269
Operating income	47,186	45,475	36,372
Other income, net	2,706	2,604	3,034
Income from continuing operations before provision for income taxes and equity in loss of unconsolidated entities	49,892	48,079	39,406
Provision for income taxes	-19,208	-18,023	-15,207
Equity in loss of unconsolidated entities	-6,051	-6,756	-1,337
Net income from continuing operations	24,633	23,300	22,862
Discontinued operations:	'	'	'
Income from discontinued operations, net of tax	0	0	286
Gain on sale of discontinued operations, net of tax	0	0	2,155
Net income from discontinued operations	0	0	2,441
Net income before allocation to noncontrolling interest	24,633	23,300	25,303
Net loss attributable to noncontrolling interest	119	108	0
Net income attributable to common stockholders	$24,752	$23,408	$25,303
Earnings per share - basic:	'	'	'
Net income from continuing operations attributable to common stockholders (dollars per share)	$0.69	$0.67	$0.70
Net income from discontinued operations attributable to common stockholders (dollars per share)	$0	$0	$0.07
Net income attributable to common stockholders per share - basic (dollars per share)	$0.69	$0.67	$0.77
Earnings per share - diluted:	'	'	'
Net income from continuing operations attributable to common stockholders (dollars per share)	$0.67	$0.64	$0.66
Net income from discontinued operations attributable to common stockholders (dollars per share)	$0	$0	$0.07
Net income attributable to common stockholders per share - diluted (dollars per share)	$0.67	$0.64	$0.73
Weighted average number of shares outstanding:	'	'	'
Basic (shares)	35,909	34,723	32,808
Diluted (shares)	36,959	36,306	34,660

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Net income attributable to common stockholders	$8,287	$3,771	$9,002	$3,692	$6,542	$4,592	$7,647	$4,627	$24,752	$23,408	$25,303
Other comprehensive income:	'	'	'	'	'	'	'	'	'	'	'
Net unrealized gains (losses) on marketable securities, net of tax	'	'	'	'	'	'	'	'	-2,802	55	1,326
Comprehensive income	'	'	'	'	'	'	'	'	$21,950	$23,463	$26,629

CONSOLIDATED_STATEMENTS_OF_STO

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Elements of Other Comprehensive Income (Loss)	Treasury Stock	Noncontrolling Interest
In Thousands, except Share data, unless otherwise specified
Beginning balance at Mar. 31, 2011	$148,840	$225	$267,242	$164,697	($120)	($283,204)	$0
Beginning balance, shares at Mar. 31, 2011	'	32,020,476	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'
Proceeds from exercise of stock options	31,034	8	31,026	'	'	'	'
Proceeds from exercise of stock options, Shares	1,775,510	1,775,510	'	'	'	'	'
Vesting of restricted stock units, net of shares withheld to satisfy minimum employee tax withholding	-2,419	2	-2,421	'	'	'	'
Vesting of restricted stock units, net of shares withheld to satisfy minimum employee tax withholding, Shares	'	150,548	'	'	'	'	'
Excess tax benefits from stock-based awards	7,593	'	7,593	'	'	'	'
Proceeds from issuance of common stock under employee stock purchase plan	222	'	222	'	'	'	'
Proceeds from issuance of common stock under employee stock purchase plan, Shares	'	6,684	'	'	'	'	'
Stock-based compensation expense	11,986	'	11,986	'	'	'	'
Purchases of treasury stock	-6,580	'	'	'	'	-6,580	'
Purchases of treasury stock, Shares	'	-223,438	'	'	'	'	'
Net income	25,303	'	'	25,303	'	'	'
Change in net unrealized gains (losses) on available-for-sale marketable securities, net of income taxes of $619 in 2012, $654 in 2013,$33 in 2014 respectively.	1,326	'	'	'	1,326	'	'
Ending balance at Mar. 31, 2012	217,305	235	315,648	190,000	1,206	-289,784	0
Ending balance, shares at Mar. 31, 2012	'	33,729,780	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'
Proceeds from exercise of stock options	24,149	12	24,137	'	'	'	'
Proceeds from exercise of stock options, Shares	1,477,219	1,470,978	'	'	'	'	'
Vesting of restricted stock units, net of shares withheld to satisfy minimum employee tax withholding	-4,139	1	-4,140	'	'	'	'
Vesting of restricted stock units, net of shares withheld to satisfy minimum employee tax withholding, Shares	'	202,865	'	'	'	'	'
Excess tax benefits from stock-based awards	20,535	'	20,535	'	'	'	'
Proceeds from issuance of common stock under employee stock purchase plan	363	'	363	'	'	'	'
Proceeds from issuance of common stock under employee stock purchase plan, Shares	'	7,748	'	'	'	'	'
Stock-based compensation expense	13,913	'	13,913	'	'	'	'
Release of Southwind earn-out payable in common stock	5,339	1	'	'	'	'	'
Release of Southwind earn-out payable in common stock, Shares	'	112,408	'	'	'	'	'
Retirement of treasury stock	'	-70	'	-307,714	'	307,784	'
Stock split	'	172	'	'	'	'	'
Purchases of treasury stock	-18,000	'	'	'	'	-18,000	'
Purchases of treasury stock, Shares	'	-385,314	'	'	'	'	'
Net income	23,300	'	'	23,408	'	'	-108
Change in net unrealized gains (losses) on available-for-sale marketable securities, net of income taxes of $619 in 2012, $654 in 2013,$33 in 2014 respectively.	55	'	'	'	55	'	'
Ending balance at Mar. 31, 2013	282,820	351	375,622	-94,306	1,261	0	-108
Ending balance, shares at Mar. 31, 2013	'	35,138,465	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'
Proceeds from exercise of stock options	22,036	13	22,023	'	'	'	'
Proceeds from exercise of stock options, Shares	1,327,358	1,323,728	'	'	'	'	'
Vesting of restricted stock units, net of shares withheld to satisfy minimum employee tax withholding	-5,918	2	-5,920	'	'	'	'
Vesting of restricted stock units, net of shares withheld to satisfy minimum employee tax withholding, Shares	'	227,202	'	'	'	'	'
Excess tax benefits from stock-based awards	19,476	'	19,476	'	'	'	'
Proceeds from issuance of common stock under employee stock purchase plan	514	'	514	'	'	'	'
Proceeds from issuance of common stock under employee stock purchase plan, Shares	'	8,962	'	'	'	'	'
Stock-based compensation expense	18,217	'	18,217	'	'	'	'
Release of Southwind earn-out payable in common stock	'	'	5,338	'	'	'	'
Retirement of treasury stock	'	-3	'	-21,914	'	21,917	'
Stock split	'	'	-172	'	'	'	'
Purchases of treasury stock	-21,917	'	'	'	'	-21,917	'
Purchases of treasury stock, Shares	'	-376,532	'	'	'	'	'
Net income	24,633	'	'	24,752	'	'	-119
Change in net unrealized gains (losses) on available-for-sale marketable securities, net of income taxes of $619 in 2012, $654 in 2013,$33 in 2014 respectively.	-2,802	'	'	'	-2,802	'	'
Ending balance at Mar. 31, 2014	$337,059	$363	$429,932	($91,468)	($1,541)	$0	($227)
Ending balance, shares at Mar. 31, 2014	'	36,321,825	'	'	'	'	'

CONSOLIDATED_STATEMENTS_OF_STO1

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Change in net unrealized gains (losses)	($1,760)	($33)	($654)
Accumulated Elements of Other Comprehensive Income (Loss)	'	'	'
Change in net unrealized gains (losses)	($1,760)	($33)	($654)

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:	'	'	'
Net income before allocation to noncontrolling interest	$24,633	$23,300	$25,303
Adjustments to reconcile net income before allocation to noncontrolling interest to net cash provided by operating activities:	'	'	'
Depreciation and amortization	30,420	20,308	14,817
Deferred income taxes	7,795	641	304
Excess tax benefits from stock-based awards	-19,476	-20,535	-7,593
Stock-based compensation expense	18,217	13,913	11,986
Amortization of marketable securities premiums	2,667	2,031	1,296
Gain on sale of discontinued operations	0	0	-3,510
Gain on investment in common stock warrants	0	-100	-450
Equity in loss of unconsolidated entities	6,051	6,756	1,337
Changes in operating assets and liabilities:	'	'	'
Membership fees receivable	-63,077	-87,672	-103,667
Prepaid expenses and other current assets	7,741	-7,469	0
Deferred incentive compensation and other charges	-12,645	-20,133	-7,143
Deferred revenues	72,137	110,099	131,743
Accounts payable and accrued liabilities	4,277	50,290	17,564
Acquisition-related earn-out payments	-2,212	-3,011	-112
Accrued incentive compensation	7,065	2,342	5,082
Other long-term liabilities	-6,891	-7,499	6,950
Net cash provided by operating activities	76,702	83,261	93,907
Cash flows from investing activities:	'	'	'
Purchases of property and equipment	-44,058	-36,979	-30,369
Capitalized external use software development costs	-5,071	-3,393	-2,825
Cash paid for acquisition, net of cash acquired	-46,036	-31,887	-12,829
Proceeds from sale of discontinued operations, net of selling costs	0	1,050	7,803
Investments in and loans to unconsolidated entities	-15,641	-4,358	-10,000
Redemptions of marketable securities	56,647	35,376	25,480
Purchases of marketable securities	-71,419	-66,710	-65,990
Net cash used in investing activities	-125,578	-106,901	-88,730
Cash flows from financing activities:	'	'	'
Proceeds from issuance of common stock from exercise of stock options	22,023	24,137	31,026
Withholding of shares to satisfy minimum employee tax withholding for vested restricted stock units	-5,920	-4,140	-2,421
Contributions from noncontrolling interest	0	100	0
Credit facility issuance costs	0	-769	0
Proceeds from issuance of common stock under employee stock purchase plan	514	363	222
Excess tax benefits from stock-based awards	19,476	20,535	7,593
Acquisition-related earn-out payments	0	-1,400	-4,753
Purchases of treasury stock	-21,917	-17,999	-6,580
Net cash provided by financing activities	14,176	20,827	25,087
Net increase / (decrease) in cash and cash equivalents	-34,700	-2,813	30,264
Cash and cash equivalents, beginning of period	57,829	60,642	30,378
Cash and cash equivalents, end of period	23,129	57,829	60,642
Supplemental disclosure of cash flow information:	'	'	'
Cash paid for income taxes	($633)	$3,491	$7,605

Business_Description_and_Basis

Business Description and Basis of Presentation	12 Months Ended
	Mar. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Business Description and Basis of Presentation	'
	Business description
	The Advisory Board Company (individually and collectively with its subsidiaries, the “Company”) provides best practices research and analysis, business intelligence and performance technology software, and consulting and management services through discrete programs to hospitals, health systems, pharmaceutical and biotechnology companies, health care insurers, medical device companies, and colleges, universities, and other health care-focused organizations and educational institutions. Members of each renewable membership program are typically charged a fixed annual fee and have access to an integrated set of services that may include best practices research studies, executive education seminars, customized research briefs, cloud-based access to the program’s content database, and performance technology software.

Summary_of_significant_account

Summary of significant accounting policies	12 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Summary of significant accounting policies	'
	Summary of significant accounting policies
	Basis of presentation and consolidation
	The consolidated financial statements include the accounts of the Company, its wholly-owned subsidiaries, and a consolidated variable interest entity. The Company uses the equity method to account for equity investments in instances in which it owns common stock or securities deemed to be in-substance common stock and has the ability to exercise significant influence, but not control, over the investee and for all investments in partnerships or limited liability companies where the investee maintains separate capital accounts for each investor. Investments in which the Company holds securities that are not in-substance common stock, or holds common stock or in-substance common stock, but has little or no influence are accounted for using the cost method. All significant intercompany transactions and balances have been eliminated.
	On June 18, 2012, the Company completed a two-for-one split of its outstanding shares of common stock in the form of a stock dividend. Each stockholder of record received one additional share of common stock for each share of common stock owned at the close of business on May 31, 2012. Share numbers and per share amounts presented in the accompanying consolidated financial statements and these notes thereto for dates before June 18, 2012 have been restated to reflect the impact of the stock split.
	Correction of prior period financial statements
	Software cost capitalization errors
	During the fiscal year ended March 31, 2014, the Company identified errors related to prior periods. These errors were attributable to the omission of certain payroll-related benefits from the Company's capitalization of software development costs. The impact of the errors in the prior periods was not material to the Company in any of those periods; however, an adjustment to correct the aggregate amount of the prior period errors would have been material to the Company’s current year statement of income. The Company has applied the guidance for accounting changes and error correction and has corrected these errors for all prior periods presented by revising the consolidated financial statements and other financial information included herein. The Company has also corrected an error related to the timing of a prior period acquisition-related earn-out fair value adjustment. The understatement of the liability of $1.0 million as of March 31, 2012 was corrected during the fiscal year ended March 31, 2013. In connection with the revision for the software cost capitalization error, the Company has revised the affected financial statements to correct the error in the proper period. Periods not presented herein will be revised, as applicable, as they are included in future filings.
	The following are the previously stated and corrected balances of the affected line items of the consolidated statements of operations, consolidated cash flows, and consolidated balance sheets presented in this Form 10-K for the periods or as of the date presented (in thousands):
		Year Ended March 31, 2013
		As reported				Adjustments			As adjusted
	Cost of services, excluding depreciation and amortization	$	240,037			$	(2,432	)	237,605
	Depreciation and amortization	19,885				423			20,308
	Operating income, net	43,466				2,009			45,475
	Income from continuing operations before provision for income taxes and equity in loss of unconsolidated entities	46,070				2,009			48,079
	Provision for income taxes	(17,259		)		(764		)	(18,023		)
	Net income before allocation to noncontrolling interest	22,055				1,245			23,300
	Net income attributable to common stockholders	22,163				1,245			23,408
	Earnings per share:
	Net income attributable to common stockholders per share - basic	$	0.64			0.03			$	0.67
	Net income attributable to common stockholders per share - diluted	$	0.61			0.03			$	0.64
	Comprehensive income	22,218				1,245			23,463
	Statement of cash flows:
	Net income before allocation to noncontrolling interest	22,055				1,245			23,300
	Depreciation and amortization	19,885				423			20,308
	Deferred income taxes	261				380			641
	Other long-term liabilities	(7,499		)		—			(7,499		)
	Net cash provided by operating activities	81,827				1,434			83,261
	Purchases of property and equipment	(35,545		)		(1,434		)	(36,979		)
	Net cash used in investing activities	(105,467		)		(1,434		)	(106,901		)
		Year Ended March 31, 2012
		As reported				Adjustments			As adjusted
	Cost of services, excluding depreciation and amortization	$	198,112			$	(175	)	$	197,937
	Depreciation and amortization	14,108				161			14,269
	Operating income, net	36,358				14			36,372
	Income from continuing operations before provision for income taxes and equity in loss of unconsolidated entities	39,392				14			39,406
	Provision for income taxes	(15,203		)		(4		)	(15,207		)
	Net income before allocation to noncontrolling interest	25,293				10			25,303
	Net income attributable to common stockholders	25,293				10			25,303
	Earnings per share:
	Net income attributable to common stockholders per share - basic	$	0.77			$	—		$	0.77
	Net income attributable to common stockholders per share - diluted	$	0.73			$	—		$	0.73
	Comprehensive income	26,619				10			26,629
	Statement of cash flows:
	Net income before allocation to noncontrolling interest	$	25,293			$	10		$	25,303
	Depreciation and amortization	14,656				161			14,817
	Deferred income taxes	(85		)		389			304
	Other long-term liabilities	5,950				1,000			6,950
	Net cash provided by operating activities	92,732				1,175			93,907
	Purchases of property and equipment	(29,194		)		(1,175		)	(30,369		)
	Net cash used in investing activities	(87,555		)		(1,175		)	(88,730		)
		As of March 31, 2013
		As reported				Adjustments			As adjusted
	Property and equipment, net	$	71,174			$	2,398		$	73,572
	Deferred income taxes, net of current portion	3,888				(895		)	2,993
	Total assets	896,430				1,503			897,933
	Accumulated deficit	(95,809		)		1,503			(94,306		)
	Total stockholders’ equity	281,317				1,503			282,820
	Total liabilities and stockholders’ equity	896,430				1,503			897,933
	Membership fees receivable and deferred revenue errors
	During the fiscal year ended March 31, 2014, the Company identified immaterial errors in previously reported amounts of membership fees receivable and deferred revenue. The consolidated balance sheet at March 31, 2013 was adjusted to correct these errors resulting in an increase in membership fees receivable of $18.7 million, an increase in current deferred revenue of $11.8 million, and an increase in deferred revenue, net of current of $6.9 million. The amounts presented above "as reported" as of March 31, 2013 reflect these previous error corrections.
	Similar errors affecting membership fees receivable and deferred revenue were identified and corrected in the consolidated statement of cash flows for the fiscal years ended March 31, 2013 and 2012. For the fiscal year ended March 31, 2012, the operating cash outflow related to membership fees receivable as reported of $104.2 million was decreased by $0.5 million and the operating cash inflow related to deferred revenue as reported of $132.3 million was decreased by the same amount. For the fiscal year ended March 31, 2013, the operating cash outflow related to membership fees receivable as reported of $68.4 million was increased by $19.3 million and the operating cash inflow related to deferred revenue as reported of $90.8 million was increased by the same amount. These error corrections are not included in the error corrections summarized above.
	These corrections have no effect on the previously reported consolidated statements of income or stockholders’ equity for any period. The errors affected only balances within changes in working capital reported in cash flows from operating activities. Total cash flows from operating activities were unaffected by the corrections.
	Use of estimates in preparation of consolidated financial statements
The Company’s consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). These accounting principles require the Company to make certain estimates, judgments, and assumptions. For cases where the Company is required to make certain estimates, judgments, and assumptions, the Company believes that the estimates, judgments, and assumptions upon which it relies are reasonable based upon information available to the Company at the time that these estimates, judgments, and assumptions are made. These estimates, judgments, and assumptions can affect the reported amounts of assets and liabilities as of the date of the financial statements as well as the reported amounts of revenue and expenses during the periods presented. To the extent there are material differences between these estimates, judgments, or assumptions and actual results, the Company’s financial statements will be affected. The Company’s estimates, judgments, and assumptions may include: estimates of bad debt reserves; estimates to establish employee bonus and commission accruals; estimates of the fair value of contingent earn-out liabilities; estimates of the useful lives of acquired or internally developed intangible assets; estimates of the fair value of goodwill and intangibles and evaluation of impairment; determination of when investment impairments are other-than-temporary; estimates of the recoverability of deferred tax assets; and estimates of the potential for future tax consequences of events that have been recognized in the Company’s financial statements or tax returns.
Cash equivalents and marketable securities
Included in cash equivalents are marketable securities with original maturities of three months or less at purchase. Investments with original maturities of more than three months are classified as marketable securities. Current marketable securities have maturity dates within twelve months of the balance sheet date. As of March 31, 2013 and 2014, the Company’s marketable securities consisted of U.S. government-sponsored enterprise obligations and various state tax-exempt notes and bonds. The Company’s marketable securities, which are classified as available-for-sale, are carried at fair market value based on quoted market prices. The net unrealized gains and losses on available-for-sale marketable securities are excluded from net income attributable to common stockholders and are included within accumulated other comprehensive income, net of tax. The specific identification method is used to compute the realized gains and losses on the sale of marketable securities.
Allowance for uncollectible revenue
The Company’s ability to collect outstanding receivables from its members has an effect on the Company’s operating performance and cash flows. The Company records an allowance for uncollectible revenue as a reduction of revenue based on its ongoing monitoring of members’ credit and the aging of receivables. To determine the allowance for uncollectible revenue, the Company examines its collections history, the age of accounts receivable in question, any specific member collection issues that have been identified, general market conditions, and current economic trends. Membership fees receivable balances are not collateralized.
Property and equipment
Property and equipment consists of leasehold improvements, furniture, fixtures, equipment, capitalized internal use software development costs, and acquired developed technology. Property and equipment is stated at cost, less accumulated depreciation and amortization. In certain membership programs, the Company provides software applications under a hosting arrangement where the software application resides on the Company’s or its service providers’ hardware. The members do not take delivery of the software and only receive access to the software during the term of their membership agreement.
Computer software development costs that are incurred in the preliminary project stage for internal use software are expensed as incurred. During the development stage, direct consulting costs and payroll and payroll-related costs for employees that are directly associated with each project are capitalized and amortized over the estimated useful life of the software once it is placed into operation. Internally developed capitalized software is classified as software within property and equipment and is amortized using the straight-line method over its estimated useful life, which is generally five years. Replacements and major improvements are capitalized, while maintenance and repairs are charged to expense as incurred. Amortization expense for internally developed capitalized software for the fiscal years ended March 31, 2012, 2013, and 2014, recorded in depreciation and amortization on the consolidated statements of income, was approximately $3.8 million, $4.8 million, and $9.2 million, respectively.
The acquired developed technology is classified as software within property and equipment because the developed software application resides on the Company’s or its service providers’ hardware. Amortization for acquired developed software is included in depreciation and amortization on the consolidated statements of income. Acquired developed software is amortized over a weighted average estimated useful life of six years based on the cash flow estimate used to determine the value of the intangible asset. The amount of acquired developed software amortization included in depreciation and amortization for the fiscal years ended March 31, 2012, 2013, and 2014 was approximately $0.9 million, $0.9 million, and $1.7 million, respectively.
Furniture, fixtures, and equipment are depreciated using the straight-line method over the estimated useful lives of the assets, which range from three to seven years. Leasehold improvements are depreciated using the straight-line method over the shorter of the estimated useful lives of the assets or the lease term. There are no capitalized leases included in property and equipment. The amount of depreciation expense recognized on plant, property and equipment during the fiscal years ended March 31, 2012, 2013, and 2014 was $5.2 million, $8.4 million, and $11.5 million, respectively.
Business combinations
The Company records acquisitions using the purchase method of accounting. All of the assets acquired, liabilities assumed, contractual contingencies, and contingent consideration are recognized at their fair value on the acquisition date. All subsequent changes to a valuation allowance or uncertain tax position that relate to the acquired company and existed at the acquisition date that occur both within the measurement period and as a result of facts and circumstances that existed at the acquisition date are recognized as an adjustment to goodwill. All other changes in valuation allowance are recognized as a reduction or increase to expense or as a direct adjustment to additional paid-in capital as required. Any acquired in-process research and development is capitalized as an intangible asset and amortized over its estimated useful life. Acquisition-related costs are recorded as expenses in the consolidated financial statements. The results of operations of acquired businesses are included in the consolidated financial statements from the acquisition date.
Goodwill and other intangible assets
The excess cost of an acquisition over the fair value of the net assets acquired is recorded as goodwill. The primary factors that generate goodwill are the value of synergies between the acquired entities and the Company and the acquired assembled workforce, neither of which qualifies as an identifiable intangible asset. The Company’s goodwill and other intangible assets with indefinite lives are not amortized, but rather tested for impairment on an annual basis on March 31, or more frequently if events or changes in circumstances indicate potential impairment. The Company has concluded that its reporting units used to assess goodwill impairment are the same as its operating segments.
When testing for impairment, the Company first performs a qualitative assessment on a reporting unit to determine whether further quantitative impairment testing is necessary. If an initial qualitative assessment identifies that it is more likely than not that the carrying value of a reporting unit exceeds its estimated fair value, additional quantitative testing is performed. If the quantitative testing indicates that goodwill is impaired, the carrying value of goodwill is written down to fair value. If the quantitative testing is performed, the Company would determine the fair value of its reporting units based on the income approach. Under the income approach, the fair value of a reporting unit is calculated based on the present value of estimated future cash flows. Based on the Company’s qualitative assessment as of March 31, 2014, management believed that no reporting unit was at risk of failing an impairment test that would result in an impairment charge. No quantitative testing was deemed necessary.
Other intangible assets consist of capitalized software for sale and acquired intangibles. The Company capitalizes consulting costs and payroll and payroll-related costs for employees directly related to building a software product for sale once technological feasibility is established. The Company determines that technological feasibility is established by the completion of a detailed program design or, in its absence, completion of a working model. Once the software product is ready for general availability, the Company ceases capitalizing costs and begins amortizing the intangible asset on a straight-line basis over its estimated useful life. The weighted average estimated useful life of capitalized software is five years. Other intangible assets include those assets that arise from business combinations and that consist of developed technology, non-competition covenants, trademarks, contracts, and customer relationships that are amortized, on a straight-line basis, over six months to twelve years. Finite-lived intangible assets are required to be amortized over their useful lives and are evaluated for possible impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable.
Recovery of long-lived assets (excluding goodwill)
The Company records long-lived assets, such as property and equipment, at cost. The carrying value of long-lived assets is reviewed for possible impairment whenever events or changes in circumstances suggest the carrying value of a long-lived asset may not be fully recoverable. The test for recoverability is made using an estimate of the undiscounted expected future cash flows and, if required, the impairment loss is measured as the amount that the carrying value of the asset exceeds the asset’s fair value if the asset is not recoverable. The Company considers expected cash flows and estimated future operating results, trends, and other available information in assessing whether the carrying value of assets is impaired. If it is determined that an asset’s carrying value is impaired, a write-down of the carrying value of the identified asset will be recorded as an operating expense on the consolidated statements of income in the period in which the determination is made.
Fair value of financial instruments
The Company’s short-term financial instruments consist of cash and cash equivalents, membership fees receivable, accrued expenses, and accounts payable. The carrying value of the Company’s financial instruments as of March 31, 2013 and 2014 approximates their fair value due to their short-term nature. The Company’s marketable securities consisting of U.S. government-sponsored enterprise obligations and various state tax-exempt notes and bonds are classified as available-for-sale and are carried at fair market value based on quoted market prices. The Company’s financial instruments also include cost method investments in private entities. These investments are in preferred securities that are not marketable; therefore management has concluded that it is not practicable to estimate the fair value of these financial instruments.
Derivative instruments
The Company holds warrants to purchase common stock in an entity that meet the definition of a derivative. Derivative instruments are carried at fair value on the consolidated balance sheets. Gains or losses from changes in the fair value of the warrants are recognized on the consolidated statements of income in the period in which they occur.
Revenue recognition
Revenue is recognized when (1) there is persuasive evidence of an arrangement, (2) the fee is fixed or determinable, (3) services have been rendered and payment has been contractually earned, and (4) collectibility is reasonably assured. Fees are generally billable when a letter of agreement is signed by the member, and fees receivable during the subsequent twelve month period and related deferred revenue are recorded upon the commencement of the membership or collection of fees, if earlier. In many of the Company’s higher priced programs and membership agreements with terms that are greater than one year, fees may be billed on an installment basis.
The Company’s membership agreements with its customers generally include more than one deliverable. Deliverables are determined based upon the availability and delivery method of the services and may include: best practices research; executive education curricula; cloud-based content, databases, and calculators; performance or benchmarking reports; diagnostic tools; interactive advisory support; and performance technology software. Access to such deliverables is generally available on an unlimited basis over the membership period. When an agreement contains multiple deliverables, the Company reviews the deliverables to determine if they qualify as separate units of accounting. In order for deliverables in a multiple-deliverable arrangement to be treated as separate units of accounting, the deliverables must have standalone value upon delivery, and delivery or performance of undelivered items in an arrangement with a general right of return must be probable. If the Company determines that there are separate units of accounting, arrangement consideration at the inception of the membership period is allocated to all deliverables based on the relative selling price method in accordance with the selling price hierarchy. Because of the unique nature of the Company’s products, neither vendor specific objective evidence nor third-party evidence is available. Therefore, the Company utilizes best estimate of selling price to allocate arrangement consideration in multiple element arrangements.
The Company’s membership programs may contain certain deliverables that do not have standalone value and therefore are not accounted for separately. In general, the deliverables in membership programs are consistently available throughout the membership period, and, as a result, the consideration is recognized ratably over the membership period. When a service offering includes unlimited and limited service offerings, revenue is recognized over the appropriate service period, either ratably, if the service is consistently available, or, if the service is not consistently available, upon the earlier of the delivery of the service or the completion of the membership period, provided that all other criteria for recognition have been met.
Certain membership programs incorporate hosted performance technology software. In many of these agreements, members are charged set-up fees in addition to subscription fees for access to the hosted cloud-based software and related membership services. Both set-up fees and subscription fees are recognized ratably over the term of the membership agreement, which is generally three years, and is consistent with the pattern of the delivery of services under these arrangements. Upon launch of a new program that incorporates software, all program revenue is deferred until the program is generally available for release to the Company’s membership, and then recognized ratably over the remainder of the contract term of each agreement.
The Company also performs professional services sold under separate agreements that include management and consulting services. The Company recognizes professional services revenues on a time-and-materials basis as services are rendered.
Deferred incentive compensation and other charges
Incentive compensation to employees related to the negotiation of new and renewal memberships, license fees to third-party vendors for tools, data, and software incorporated in specific memberships that include performance technology software, and other direct and incremental costs associated with specific memberships are deferred and amortized over the term of the related memberships.
Deferred compensation plan
Effective July 1, 2013, the Company implemented a Deferred Compensation Plan (the ''Plan’’) for certain employees to provide an opportunity to defer compensation on a pre-tax basis. The Plan provides for deferred amounts to be credited with investment returns based upon investment options selected by participants from alternatives designated from time to time by the plan administrative committee. Investment earnings associated with the Plan’s assets are included in other income, net while changes in individual participant account balances are recorded as compensation expense in the consolidated statements of income. The Plan also allows the Company to make discretionary contributions at any time based on individual or overall Company performance, which may be subject to a different vesting schedule than elective deferrals, and provides that the Company may make contributions in an amount equal to the amount of any 401(k) plan matching contribution that is not credited to the participant’s 401(k) account due to such employee's participation in the Plan. The Company did not make any discretionary contributions to the Plan in the fiscal year ended March 31, 2014. The income earned and expense incurred related to the Plan was immaterial for the fiscal year ended March 31, 2014.
Operating leases
The Company recognizes rent expense under operating leases on a straight-line basis over the non-cancelable term of the lease, including free-rent periods. Lease-incentives relating to allowances provided by landlords are amortized over the term of the lease as a reduction of rent expense. The Company recognizes sublease income on a straight-line basis over the term of the sublease, including free rent periods and escalations, as a reduction of rent expense. Costs associated with acquiring a subtenant, including broker commissions and tenant allowances, are amortized over the sublease term as a reduction of sublease income.
Stock-based compensation
The Company has several stock-based compensation plans which are described more fully in Note 15, “Stock-based compensation.” These plans provide for the granting of stock options and restricted stock units (“RSUs”) to employees, non-employee members of the Company’s Board of Directors and any other service providers who have been retained to provide consulting, advisory or other services to the Company. Stock-based compensation cost is measured at the grant date of the stock-based awards based on their fair values, and is recognized as an expense in the consolidated statements of income over the vesting periods of the awards. The fair value of RSUs is determined as the fair market value of the underlying shares on the date of grant. The Company calculates the fair value of all stock option awards, with the exception of the stock options issued with market-based conditions, on the date of grant using the Black-Scholes model. The fair value of stock options issued with market-based conditions is calculated on the date of grant using a lattice option-pricing model. Forfeitures are estimated based on historical experience at the time of grant and adjusted, if necessary, in subsequent periods if actual forfeitures differ from those estimates. The Company bases its fair value estimates on assumptions it believes to be reasonable but that are inherently uncertain.
Other income, net
Other income, net for the fiscal year ended March 31, 2012 includes $2.4 million of interest income earned from the Company’s marketable securities, a $0.1 million gain on foreign exchange rates, and a $0.5 million gain on an investment in common stock warrants. Other income, net for the fiscal year ended March 31, 2013 includes $3.4 million of interest income earned from the Company’s marketable securities, a $0.5 million loss on foreign exchange rates, $0.3 million in credit facility fees, and a $0.1 million gain on an investment in common stock warrants. Other income, net for the fiscal year ended March 31, 2014 includes $3.3 million of interest income earned from the Company’s marketable securities, a $0.2 million loss on foreign exchange rates, $0.6 million in credit facility fees, and a $0.2 million realized gain on sale of marketable securities.
Income taxes
Deferred income taxes are determined using the asset and liability method. Under this method, temporary differences arise as a result of the difference between the reported amounts of assets and liabilities and their tax bases. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion or the entire deferred tax asset will not be realized. Deferred tax assets and liabilities are adjusted for the effects of changes in tax law and tax rates on the date of the enactment of the change.
Discontinued operations
The Company presents the assets and liabilities of programs which meet the criteria for discontinued operations separately in the consolidated balance sheets. In addition, the results of operations for those discontinued operations are presented as such in the Company’s consolidated statements of income. For periods prior to the program qualifying for discontinued operations, the Company reclassifies the results of operations to discontinued operations. In addition, the net gain or loss (including any impairment loss) on the disposal is presented as discontinued operations when recognized. The change in presentation for discontinued operations does not have any impact on the Company’s financial condition or results of operations. The Company combines the operating, investing, and financing portions of cash flows attributable to discontinued operations with the respective cash flows from continuing operations on the consolidated statements of cash flows.
Concentrations of risk
Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of membership fees receivable, cash and cash equivalents, and marketable securities. The credit risk with respect to membership fees receivable is generally diversified due to the large number of entities comprising the Company’s membership base, and the Company establishes allowances for potential credit losses. No one member accounted for more than 1.5% of revenue for any period presented. The Company maintains cash and cash equivalents and marketable securities with financial institutions. Marketable securities consist of U.S. government-sponsored enterprise obligations and various state tax-exempt notes and bonds. The Company performs periodic evaluations of the relative credit ratings related to the cash, cash equivalents, and marketable securities.
In the fiscal year ended March 31, 2012, 2013, and 2014, the Company generated approximately 3.5%, 4.0%, and 3.1%, of revenue, respectively, from members outside the United States. The Company’s limited international operations subject the Company to risks related to currency exchange fluctuations. Prices for the Company’s services sold to members located outside the United States are sometimes denominated in local currencies. Increases in the value of the U.S. dollar against local currencies in countries where the Company has members may result in a foreign exchange loss recognized by the Company.
Earnings per share
Basic earnings per share is computed by dividing net income attributable to common stockholders by the number of weighted average common shares outstanding during the period. Diluted earnings per share is computed by dividing net income attributable to common stockholders by the number of weighted average common shares increased by the dilutive effects of potential common shares outstanding during the period. The number of potential common shares outstanding is determined in accordance with the treasury stock method, using the Company’s prevailing tax rates. Certain potential common share equivalents were not included in the computation because their effect was anti-dilutive.
A reconciliation of basic to diluted weighted average common shares outstanding is as follows (in thousands):
	Year Ended March 31,
	2012			2013			2014
Basic weighted average common shares outstanding	32,808			34,723			35,909
Effect of dilutive outstanding stock-based awards	1,742			1,583			1,050
Dilutive impact of earn-out liability	110			—			—
Diluted weighted average common shares outstanding	34,660			36,306			36,959
In the fiscal years ended March 31, 2012, 2013, and 2014, 78,000, 341,000, and 1.0 million shares, respectively, related to share-based compensation awards have been excluded from the calculation of the effect of dilutive outstanding stock-based awards shown above because their effect was anti-dilutive.
Recent accounting pronouncements
Changes to GAAP are established by the Financial Accounting Standards Board (“FASB”) in the form of accounting standards updates (“ASUs”) to the FASB’s Accounting Standards Codification. The Company considers the applicability and impact of all recent ASUs. ASUs not listed below were assessed and determined to be not applicable or are expected to have minimal impact on the Company’s consolidated financial position and results of operations.
In July 2013, the FASB issued accounting guidance related to income taxes, which requires entities to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward when settlement in this manner is available under the tax law. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013, with early adoption permitted. The Company will adopt this guidance for its fiscal year beginning April 1, 2014. The Company does not expect the adoption of this guidance to have a material effect on its financial position or results of operations.

Acquisitions

Acquisitions	12 Months Ended
	Mar. 31, 2014
Business Combinations [Abstract]	'
Acquisitions	'
		Acquisitions
	Care Team Connect, Inc.
	On October 7, 2013, the Company completed the acquisition for cash of all of the issued and outstanding capital stock of Care Team Connect, Inc. ("Care Team Connect"), a provider of comprehensive care management workflow solutions. The acquisition enhances the Company’s existing suite of population health technologies and service offerings and affirms the Company’s position as a leader in the care management market. The total purchase price, net of cash acquired, was $34.6 million.
	The total purchase price was allocated to the assets acquired, including intangible assets and liabilities assumed, based on their estimated fair values as of October 7, 2013. The Company’s fair value of identifiable tangible and intangible assets was determined by using estimates and assumptions in combination with a valuation using an income approach from a market participant perspective. Of the total estimated purchase price, $13.8 million was allocated to accounts receivable, $0.2 million to fixed assets, $13.5 million to assumed liabilities, which consists of $4.2 million of acquired current deferred revenue, $7.7 million of acquired long-term deferred revenue, $0.9 million of accounts payable, and $0.7 million to deferred tax liabilities. Of the total estimated purchase price, $9.3 million was allocated to intangible assets, which consist of the value assigned to acquired technology related intangibles of $5.4 million, customer relationship related intangibles of $2.8 million, and existing customer contracts of $1.1 million. The acquired intangible assets have estimated lives ranging from three years to twelve years based on the cash flow estimates used to create the valuation models of each identifiable asset with a weighted average amortization period of 8.2 years. Approximately $24.8 million of the total estimated purchase price was allocated to goodwill, which represents synergistic benefits expected to be generated from scaling Care Team Connect’s offerings across the Company’s large membership base. Goodwill is not deductible for tax purposes.
	Acquisition related transaction costs of $0.3 million, including legal, accounting, and other professional fees directly related to the acquisition, are included in general and administrative expenses on the consolidated statements of income for the fiscal year ended March 31, 2014. The financial results of Care Team Connect are included in the consolidated financial statements from the date of acquisition. Pro forma financial information for this acquisition has not been presented because the effects were not material to the Company’s historical consolidated financial statements.
	Medical Referral Source, Inc.
	On July 8, 2013, the Company completed the acquisition for cash of all of the issued and outstanding capital stock of Medical Referral Source, Inc. (“MRS”) to supplement its existing physician referral programs and to provide new growth opportunities. The total purchase price, net of cash acquired, was $11.5 million.
	The total purchase price was allocated to the assets acquired, including intangible assets and liabilities assumed, based on their estimated fair values as of July 8, 2013. The Company’s fair value of identifiable tangible and intangible assets was determined by using estimates and assumptions in combination with a valuation using an income approach from a market participant perspective. Of the total estimated purchase price, $0.7 million was allocated to accounts receivable, $0.2 million to deferred tax assets, and $0.4 million to assumed liabilities, which consists of $0.3 million of acquired deferred revenue and $0.1 million of accounts payable. Of the total estimated purchase price, $2.1 million was allocated to intangible assets, which consist of the value assigned to acquired technology related intangibles of $1.7 million and customer relationship related intangibles of $0.4 million. The acquired intangible assets have estimated lives ranging from three years to eight years based on the cash flow estimates used to create the valuation models of each identifiable asset with a weighted average amortization period of 4.0 years. Approximately $8.9 million of the total estimated purchase price was allocated to goodwill, which represents synergistic benefits expected to be generated from scaling MRS’s offerings across the Company’s large membership base. Goodwill is not deductible for tax purposes.
	Acquisition related transaction costs of $0.1 million, including legal, accounting, and other professional fees directly related to the acquisition, are included in general and administrative expenses on the consolidated statements of income for the fiscal year ended March 31, 2014. The financial results of MRS are included in the consolidated financial statements from the date of acquisition. Pro forma financial information for this acquisition has not been presented because the effects were not material to the Company’s historical consolidated financial statements.
	360Fresh, Inc.
	On November 15, 2012, the Company acquired for cash all of the issued and outstanding capital stock of 360Fresh, Inc. (“360Fresh”), a provider of clinical data analytics. The transaction enhances the Company’s existing suite of physician performance management solutions through the addition of technology that transforms the data from medical records into actionable insights to improve patient quality, reduce costs, and enhance productivity for health systems. The total purchase price, net of cash acquired, of $19.5 million consisted of an initial payments of $17.0 million of cash, and the fair value of estimated additional contingent cash payments of $2.5 million. The contingent cash payments, which will not exceed $8.0 million and have no guaranteed minimum, will become due and payable to the former stockholders of 360Fresh if certain revenue targets are achieved over evaluation periods beginning at the acquisition date and extending through August 15, 2014. Upward adjustments totaling $0.1 million were made to the fair value of the liabilities for such contingent cash payments during the fiscal year ended March 31, 2014. The total liability recorded in cost of services on the consolidated statements of income was $2.6 million as of March 31, 2014. See Note 5, “Fair value measurements,” for additional information.
	The total purchase price was allocated to the assets acquired, including intangible assets and liabilities assumed, based on their estimated fair values as of November 15, 2012. The Company’s fair value of identifiable tangible and intangible assets was determined by using estimates and assumptions in combination with a valuation using an income approach from a market participant perspective. Of the total estimated purchase price, $0.3 million was allocated to acquired accounts receivable and $4.1 million was allocated to assumed liabilities, which consist of $4.0 million of deferred tax liabilities and $0.1 million of acquired deferred revenue. Of the total estimated purchase price, $9.9 million was allocated to intangible assets, which consist of the value assigned to acquired technology related intangibles of $9.8 million and employee related intangibles of $0.1 million. The acquired technology and employee related intangibles have estimated lives ranging from four years to seven years based on the cash flow estimates used to create the valuation models of each identifiable asset with a weighted average amortization period of 7.0 years. Approximately $13.4 million of the total estimated purchase price was allocated to goodwill, which represents synergistic benefits expected to be generated from incorporating 360Fresh’s technology capabilities into the Company’s software programs and scaling their existing products across the Company’s large membership base. Goodwill is not deductible for tax purposes.
	Acquisition related transaction costs of $0.3 million, including legal, accounting, and other professional fees directly related to the acquisition, are included in general and administrative expenses on the consolidated statements of income for the fiscal year ended March 31, 2013. The financial results of 360Fresh are included in the consolidated financial statements from the date of acquisition. Pro forma financial information for this acquisition has not been presented because the effects were not material to the Company’s historical consolidated financial statements.
	ActiveStrategy, Inc.
	On October 1, 2012, the Company acquired for cash all of the issued and outstanding capital stock of ActiveStrategy, Inc. (“ActiveStrategy”), a Philadelphia-based performance improvement technology and consulting firm with innovative solutions for tracking and augmenting organizational effectiveness. This transaction enhances the Company’s existing performance improvement technology capabilities. The total purchase price, net of cash acquired, was $14.9 million. The total purchase price was paid in cash.
	The total purchase price was allocated to the assets acquired, including intangible assets and liabilities assumed, based on their estimated fair values as of October 1, 2012. The Company’s fair value of identifiable tangible and intangible assets was determined by using estimates and assumptions in combination with a valuation using an income approach from a market participant perspective. Of the total estimated purchase price, $1.5 million was allocated to net acquired tangible assets, which consist of accounts receivable of $1.3 million, deferred tax assets, net of $0.9 million, and other current assets of $0.3 million, net of $1.0 million of acquired deferred revenue. Of the total estimated purchase price, $5.5 million was allocated to intangible assets, which consist of the value assigned to acquired technology related intangibles of $3.0 million, customer relationship and employee related intangibles of $1.0 million, and trademarks of $1.5 million. The acquired intangible assets have estimated lives ranging from four years to eleven years based on the cash flow estimates used to create the valuation models of each identifiable asset with a weighted average amortization period of 7.2 years. Approximately $7.9 million of the total estimated purchase price was allocated to goodwill, which represents synergistic benefits expected to be generated from scaling ActiveStrategy’s offerings across the Company’s large membership base. Goodwill is not deductible for tax purposes.
	Acquisition related transaction costs of $0.2 million, including legal, accounting, and other professional fees directly related to the acquisition, are included in general and administrative expenses on the consolidated statements of income for the fiscal year ended March 31, 2013. The financial results of ActiveStrategy are included in the consolidated financial statements from the date of acquisition. Pro forma financial information for this acquisition has not been presented because the effects were not material to the Company’s historical consolidated financial statements.
	PivotHealth
	On August 1, 2011, the Company acquired for cash substantially all the assets of PivotHealth, LLC (“PivotHealth”), a leading physician practice management firm. The Company acquired PivotHealth to supplement its existing physician practice management capabilities and provide new growth opportunities with the addition of PivotHealth’s expertise in long-term physician practice management. The total purchase price, net of cash acquired, of $19.8 million consisted of an initial payment of $16.9 million of cash and the fair value of estimated additional contingent cash payments of $2.9 million. The additional contingent cash payments, which have no guaranteed minimum or maximum, will become due and payable to the former owner of the PivotHealth business if certain revenue targets are achieved over evaluation periods beginning at the acquisition date and extending through December 31, 2014. A $1.0 million downward adjustment was made to the fair value of the liabilities for such contingent cash payments during the fiscal year ended March 31, 2014. This adjustment was recorded in cost of services on the consolidated statements of income and eliminated the liability as of March 31, 2014. See Note 5, “Fair value measurements,” for additional information.
	The total purchase price was allocated to the assets acquired, including intangible assets and liabilities assumed, based on their estimated fair values as of August 1, 2011. The Company’s fair value of identifiable tangible and intangible assets was determined by using estimates and assumptions in combination with a valuation using an income approach from a market participant perspective. Of the total estimated purchase price, $1.8 million was allocated to acquired tangible assets, $1.0 million was allocated to assumed liabilities, and $6.4 million was allocated to intangible assets, which consist of the value assigned to customer related intangibles of $6.0 million, primarily customer relationships and trademarks, and employee related intangibles of $0.4 million. The acquired customer and employee related intangibles have estimated lives ranging from six months to nine years based on the cash flow estimates used to create the valuation models of each identifiable asset with a weighted average amortization period of 6.5 years. Approximately $12.6 million of the total estimated purchase price was allocated to goodwill, which represents synergistic benefits expected to be generated from scaling PivotHealth’s offerings across the Company’s large membership base. Goodwill is deductible for tax purposes.
	Acquisition related transaction costs of $0.4 million, including legal, accounting, and other professional fees directly related to the acquisition, are included in general and administrative expenses on the consolidated statements of income for the fiscal year ended March 31, 2012. The financial results of PivotHealth are included in the consolidated financial statements from the date of acquisition. Pro forma financial information for this acquisition has not been presented because the effects were not material to the Company’s historical consolidated financial statements.

Discontinued_operations

Discontinued operations	12 Months Ended
	Mar. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Discontinued operations	'
	Discontinued operations
	On January 20, 2012, the Company sold its OptiLink business for $8.9 million in cash, net of selling costs. The OptiLink business employed approximately 35 employees who were transferred to the buyer. The components of discontinued operations included in the consolidated statements of income consisted of the following (in thousands):
		Year Ended March 31,
		2012			2013		2014
	Revenue	$	4,985		$	—	$	—
	Costs and expenses:
	Cost of services	4,330			—		—
	Member relations and marketing	189			—		—
	Gain on disposal	3,510			—		—
	Income from discontinued operations before provision for income taxes	3,976			—		—
	Provision for income taxes	(1,535		)	—		—
	Net income from discontinued operations, net of provision for income taxes	$	2,441		$	—	$	—

Fair_value_measurements

Fair value measurements	12 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Fair value measurements	'
	Fair value measurements
	Financial assets and liabilities
	The estimated fair values of financial instruments are determined based on relevant market information. These estimates involve uncertainty and cannot be determined with precision. The Company’s financial instruments consist primarily of cash, cash equivalents, marketable securities, and common stock warrants. In addition, contingent earn-out liabilities resulting from business combinations are recorded at fair value. The following methods and assumptions are used to estimate the fair value of each class of financial assets or liabilities that are valued on a recurring basis.
	Cash and cash equivalents. This includes all cash and liquid investments with an original maturity of three months or less from the date acquired. The carrying amount approximates fair value because of the short maturity of these instruments. Cash equivalents also consist of money market funds with fair values based on quoted market prices. The Company’s cash and cash equivalents are held at major commercial banks.
	Marketable securities. The Company’s marketable securities, consisting of U.S. government-sponsored enterprise obligations and various state tax-exempt notes and bonds, are classified as available-for-sale and are carried at fair market value based on quoted market prices.
	Common stock warrants. The Company holds warrants to purchase common stock in an entity that provides technology tools and support services to health care providers, including the Company’s members. The warrants are exercisable for up to 6,015,000 of the shares of the entity if and when certain performance criteria are met. The warrants meet the definition of a derivative and are carried at fair value in other non-current assets on the consolidated balance sheets. Gains or losses from changes in the fair value of the warrants are recognized in other income, net on the consolidated statements of income. See Note 11, “Other non-current assets,” for additional information. The fair value of these warrants is determined using a Black-Scholes-Merton model. Key inputs into this methodology are the estimate of the underlying value of the common shares of the entity that issued the warrants and the estimate of level of performance criteria that will be achieved. The entity that issued the warrants is privately held and the estimate of performance criteria to be met is specific to the Company. These inputs are unobservable and are considered key estimates made by the Company.
	Contingent earn-out liabilities. This class of financial liabilities represents the Company’s estimated fair value of the contingent earn-out liabilities related to acquisitions based on probability assessments of certain performance achievements during the earn-out periods. Contingent earn-out liabilities are included in other long-term liabilities on the consolidated balance sheets. See Note 3, “Acquisitions,” for additional information.
	Measurements
	Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. The valuation can be determined using widely accepted valuation techniques, such as the market approach (comparable market prices) and the income approach (present value of future income or cash flow). As a basis for applying a market-based approach in fair value measurements, GAAP establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. The following is a brief description of those three levels:
	•	Level 1—Quoted prices in active markets for identical assets or liabilities.
	•	Level 2—Observable market-based inputs other than Level 1 inputs, such as quoted prices for similar assets or liabilities in active markets; quoted prices for similar or identical assets or liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data.
	•	Level 3—Unobservable inputs that are supported by little or no market activity, such as discounted cash flow methodologies.
	Assets and liabilities are classified based on the lowest level of input that is significant to the fair value measurements. The Company reviews the fair value hierarchy classification on a quarterly basis. Changes in the observability of valuation inputs may result in a reclassification of levels for certain securities within the fair value hierarchy. There were no significant transfers between Level 1, Level 2, or Level 3 during the fiscal year ended March 31, 2013 or 2014.
	The Company’s financial assets and liabilities subject to fair value measurements on a recurring basis and the necessary disclosures are as follows (in thousands):
		Fair value			Fair value measurement as of March 31, 2013
		as of March 31,			using fair value hierarchy
		2013			Level 1			Level 2		Level 3
	Financial assets
	Cash and cash equivalents (1)	$	57,829		$	57,829		$	—	$	—
	Available-for-sale marketable securities (2)	156,839			—			156,839		—
	Common stock warrants (3)	550			—			—		550
	Financial liabilities
	Contingent earn-out liabilities (4)	15,200			—			—		15,200
		Fair value			Fair value measurement as of March 31, 2014
		as of March 31,			using fair value hierarchy
		2014			Level 1			Level 2		Level 3
	Financial assets
	Cash and cash equivalents (1)	$	23,129		$	23,129		$	—	$	—
	Available-for-sale marketable securities (2)	164,396			—			164,396		—
	Common stock warrants (3)	550			—			—		550
	Financial liabilities
	Contingent earn-out liabilities (4)	8,750			—			—		8,750
	—————————————
	-1	Fair value is based on quoted market prices.
	-2	Fair value is determined using quoted market prices of the assets. For further detail, see Note 6, “Marketable securities.” The Company changed the classification of its marketable securities from Level 1 to Level 2 within the fair value hierarchy during the fiscal year ended March 31, 2014. The investments affected by this change are U.S. government-sponsored securities and tax exempt obligations of states that do not have observable prices in active markets. The Company concluded that these investments are more appropriately classified as Level 2 within the fair value hierarchy. The March 31, 2013 classification has been changed to conform to the revised presentation. The impact of this change is immaterial and has no effect on the previously reported consolidated statements of income, stockholders' equity, cash flows or balance sheets.
	-3	The fair value of the common stock warrants as of March 31, 2013 and 2014 was calculated to be $0.40 per share and $0.44 per share, respectively, using a Black-Scholes-Merton model. The significant assumptions as of March 31, 2013 were as follows: risk-free interest rate of 1.0%; expected term of 6.22 years; expected volatility of 39.38%; dividend yield of 0%; weighted average share price of $1.00 per share; and warrants expected to become exercisable of approximately 1,400,000 shares. The significant assumptions as of March 31, 2014 were as follows: risk-free interest rate of 1.7%; expected term of 5.22 years; expected volatility of 36.77%; dividend yield of 0%; weighted average share price of $1.12 per share; and a range of warrants expected to become exercisable of between 1,000,000 and 1,400,000 shares.
	-4	This fair value measurement is based on unobservable inputs that are supported by little or no market activity and reflect the Company’s own assumptions in measuring fair value using the income approach. In developing these estimates, the Company considered certain performance projections, historical results, and general macro-economic environment and industry trends.
	Common stock warrants
	The Company’s fair value estimate of the common stock warrants received in connection with its June 2009 investment was zero as of the investment date. Changes in the fair value of the common stock warrants subsequent to the investment date are recognized in earnings in the periods during which the estimated fair value changes. The change in the fair value of the common stock warrants during the fiscal year ended March 31, 2013 was driven primarily by a change in the underlying value of the common stock, offset in part by a slight decrease in the estimated performance targets that will be achieved. There was no change in the fair value of the warrants for the fiscal year ended March 31, 2014. The following table represents a reconciliation of the change in the fair value of the common stock warrants for the fiscal years ended March 31, 2013 and 2014 (in thousands):
		As of March 31,
		2013			2014
	Beginning balance	$	450		$	550
	Fair value change in common stock warrants (1)	100			—
	Ending balance	$	550		$	550
	—————————————
	-1	Amounts were recognized in other income, net on the consolidated statements of income.
	Contingent earn-out liabilities
	The Company entered into an earn-out agreement in connection with its acquisition of Southwind on December 31, 2009. The additional contingent payments, which have no guaranteed maximum, become due and payable to the former owners of the Southwind business if certain milestones are met over the evaluation periods beginning at the acquisition date and extending through December 31, 2014. The fair value of the Southwind earn-out liability is impacted by changes in estimates regarding expected operating results and an applied discount rate, which was 16% as of March 31, 2014. Prior to March 31, 2013, the liability was impacted by changes in the Company’s stock price. The Company’s fair value estimate of the Southwind earn-out liability was $5.6 million as of the date of acquisition. On October 31, 2012, the Company transferred 112,408 shares of its common stock to the former owners of Southwind to satisfy the component of the contingent obligation payable in the Company’s common stock, which reduced the related earn-out liability by $5.4 million. As of March 31, 2014, $14.7 million had been earned and paid in cash and shares to the former owners of the Southwind business. As of March 31, 2014, based on current facts and circumstances, the estimated aggregate fair value of the remaining contingent obligation was $6.1 million, which will be paid in cash at various intervals through April 2016, if earned, over the evaluation periods which extend through December 31, 2014.
	The Company’s fair value estimate of the 360Fresh earn-out liability, which is payable in cash in November 2014, was $2.5 million as of the date of acquisition. The fair value of the 360Fresh earn-out liability is impacted by changes in estimates regarding expected operating results and a discount rate, which was 19.0% as of March 31, 2014. As of March 31, 2014, based on current facts and circumstances, the estimated aggregate fair value of the remaining contingent obligation was $2.6 million. See Note 3, “Acquisitions,” for additional information regarding the 360Fresh acquisition and related earn-out liability.
	The Company's fair value estimate of the PivotHealth earn-out liability, which is payable in cash, was $2.9 million as of the date of acquisition. The estimated aggregate fair value of the contingent obligation for PivotHealth as of March 31, 2014 was $0. The fair value of the PivotHealth earn-out liability is impacted by changes in estimates regarding expected operating results as of March 31, 2014. See Note 3, “Acquisitions,” for additional information regarding the PivotHealth acquisition and related earn-out liability.
	Changes in the fair value of the contingent earn-out liabilities subsequent to the acquisition date, including changes arising from events that occurred after the acquisition date, such as changes in the Company’s estimate of performance achievements, discount rates, and stock price, are recognized in earnings in the periods during which the estimated fair value changes. The following table represents a reconciliation of the change in the contingent earn-out liabilities for the fiscal years ended March 31, 2013 and 2014 (in thousands):
		As of March 31,
		2013			2014
	Beginning balance	$	21,200		$	15,200
	Fair value change in Southwind contingent earn-out liability (1)	5,600			(3,350		)
	Fair value change in Cielo contingent earn-out liability (1)	400			—
	Fair value change in 360 Fresh contingent earn-out liability (1)	—			100
	Fair value change in PivotHealth contingent earn-out liability (1)	(2,200		)	(1,000		)
	Southwind earn-out payment	(10,600		)	(2,200		)
	Cielo earn-out payment	(1,700		)	—
	Addition of 360Fresh contingent earn-out liability	2,500			—
	Ending balance	$	15,200		$	8,750
	—————————————
-1	Amounts were recognized in cost of services on the consolidated statements of income.
Non-recurring fair value measurements
During the fiscal year ended March 31, 2014, the Company recognized a gain of $4.0 million on the conversion of notes receivable from Evolent Health, Inc., ("Evolent") into Series B convertible preferred stock of Evolent Health LLC ("Evolent LLC"). See Note 10, “Investments in and advances to unconsolidated entities,” for additional information. The amount of the gain was based on the excess of the fair value of the Series B convertible preferred stock received over the carrying value of the notes receivable exchanged. The fair value of the Series B convertible preferred stock used to calculate the gain was determined by reference to the per share price of issuances of the Series B convertible preferred stock by Evolent LLC to a third party at the same time as the Company exchanged its notes receivable. As this transaction was not made in an active market, this measure is considered a Level 2 fair value measurement.
Non-financial assets and liabilities
Certain assets and liabilities are not measured at fair value on an ongoing basis but instead are measured at fair value on a non-recurring basis, so that such assets and liabilities are subject to fair value adjustments in certain circumstances (e.g., when there is evidence of impairment). During the fiscal years ended March 31, 2013 and 2014, no fair value adjustments or material fair value measurements were required for non-financial assets or liabilities.

Marketable_securities

Marketable securities	12 Months Ended
	Mar. 31, 2014
Investments, Debt and Equity Securities [Abstract]	'
Marketable securities	'
	Marketable securities
	The aggregate value, amortized cost, gross unrealized gains, and gross unrealized losses on available-for-sale marketable securities are as follows (in thousands):
		As of March 31, 2014
		Fair		Amortized		Gross		Gross
		value		cost		unrealized		unrealized
						gains		losses
	U.S. government-sponsored enterprises	$	29,291	$	30,344	$	—	$	1,053
	Tax exempt obligations of states	135,105		136,653		1,060		2,608
		$	164,396	$	166,997	$	1,060	$	3,661
		As of March 31, 2013
		Fair		Amortized		Gross		Gross
		value		cost		unrealized		unrealized
						gains		losses
	U.S. government-sponsored enterprises	$	25,430	$	25,347	$	83	$	—
	Tax exempt obligations of states	131,409		129,550		2,715		856
		$	156,839	$	154,897	$	2,798	$	856
	The following table summarizes marketable securities maturities (in thousands):
		As of March 31, 2014
		Fair market		Amortized
		value		cost
	Matures in less than 1 year	$	2,426	$	2,404
	Matures after 1 year through 5 years	44,867		44,536
	Matures after 5 years through 10 years	87,956		89,436
	Matures after 10 years through 20 years	29,147		30,621
		$	164,396	$	166,997
	The following tables show the gross unrealized losses and fair value of the Company’s investments as of March 31, 2014 with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands):
		Less than 12 months				12 months or more				Total
		Fair		Gross		Fair		Gross		Fair		Gross
		value		unrealized		value		unrealized		value		unrealized
				losses				losses				losses
	U.S. government-sponsored enterprises	$	26,828	$	1,016	$	2,463	$	37	$	29,291	$	1,053
	Tax exempt obligations of states	53,617		841		42,865		1,767		96,482		2,608
		$	80,445	$	1,857	$	45,328	$	1,804	$	125,773	$	3,661
	The were $0.5 million in gross realized gains on sales of available-for-sale investments and $0.4 million in gross realized losses on sales of available-for-sale investments for the fiscal year ended March 31, 2014. There were no gross realized gains or losses on sales of available-for-sale investments for the fiscal years ended March 31, 2012 and 2013.
	The weighted average maturity on all marketable securities held by the Company as of March 31, 2014 was approximately 7.1 years. Pre-tax net unrealized losses on the Company’s investments of $2.6 million as indicated above were caused by the increase in market interest rates compared to the average interest rate of the Company’s marketable securities portfolio. Of this amount, a gain of $22,323 is related to investments that mature before March 31, 2015. The Company purchased certain of its investments at a premium or discount to their relative fair values. The Company does not intend to sell these investments and it is not more likely than not that it will be required to sell the investments before recovery of the amortized cost bases, which may be maturity. There are eighteen tax exempt obligations of states and ten tax exempt obligations of U.S. government-sponsored enterprises with unrealized losses that have existed for less than one year. The Company does not consider these investments to be other-than-temporarily impaired as of March 31, 2014. The Company has reflected the net unrealized gains and losses, net of tax, in accumulated other comprehensive income on the consolidated balance sheets. The Company uses the specific identification method to determine the cost of marketable securities that are sold.

Membership_fees_receivable

Membership fees receivable	12 Months Ended
	Mar. 31, 2014
Receivables [Abstract]	'
Membership fees receivable	'
	Membership fees receivable
	Membership fees receivable consist of the following (in thousands):
		As of March 31,
		2013			2014
	Billed fees receivable	$	76,594		$	87,476
	Unbilled fees receivable	299,493			367,271
	Membership fees receivable, gross	376,087			454,747
	Allowance for uncollectible revenue	(5,766		)	(6,850		)
	Membership fees receivable, net	$	370,321		$	447,897
	Billed fees receivable represent invoiced membership fees. Unbilled fees receivable represent fees due to be billed to members who have elected to pay for their membership on an installment basis. All of the unbilled fees recorded are expected to be billed in the next twelve months.

Property_and_equipment

Property and equipment	12 Months Ended
	Mar. 31, 2014
Property, Plant and Equipment [Abstract]	'
Property and equipment	'
	Property and equipment
	Property and equipment consists of the following (in thousands):
		As of March 31,
		2013			2014
	Leasehold improvements	$	29,953		$	39,425
	Furniture, fixtures and equipment	36,502			43,112
	Software	65,589			100,808
	Property and equipment, gross	132,044			183,345
	Accumulated depreciation and amortization	(58,472		)	(80,888		)
	Property and equipment, net	$	73,572		$	102,457
	The Company evaluates its long-lived assets for impairment when changes in circumstances exist that suggests the carrying value of a long-lived asset may not be fully recoverable. If an indication of impairment exists, and the Company’s net book value of the related assets is not fully recoverable based upon an analysis of its estimated undiscounted future cash flows, the assets are written down to their estimated fair value. The Company did not recognize any impairment losses on any of its long-lived assets during the fiscal year ended March 31, 2013 or 2014.
	As of March 31, 2013 and 2014, the carrying value of internally developed capitalized software was $30.7 million and $46.0 million, respectively.

Goodwill_and_intangibles

Goodwill and intangibles	12 Months Ended
	Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and intangibles	'
	Goodwill and intangibles
	Included in the Company’s goodwill and intangibles balances are goodwill and acquired intangibles and internally developed capitalized software for sale. Goodwill is not amortized as it has an estimated infinite life. Goodwill is reviewed for impairment at least annually as of March 31, or whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. The Company believes that no such impairment indicators existed during the fiscal years ended March 31, 2012, 2013, or 2014. There was no impairment of goodwill recorded in the fiscal year ended March 31, 2012, 2013, or 2014.
	Changes in the carrying amount of goodwill are as follows (in thousands):
		As of March 31,
		2013				2014
	Beginning of year	$	74,235			$	95,540
	Goodwill acquired	21,305				33,884
	Ending balance	$	95,540			$	129,424
	Intangible assets with finite lives are amortized on a straight-line basis over their estimated useful lives, which range from six months to twelve years. As of March 31, 2014, the weighted average remaining useful life of acquired intangibles was approximately 5.6 years. As of March 31, 2014, the weighted average remaining useful life of internally developed intangibles was approximately 4.2 years.
	The gross and net carrying balances and accumulated amortization of intangibles are as follows (in thousands):
				As of March 31, 2013									As of March 31, 2014
		Weighted		Gross				Accumulated			Net		Gross		Accumulated			Net
		average		carrying				amortization			carrying		carrying		amortization			carrying
		useful life		amount							amount		amount					amount
	Intangibles
	Internally developed intangible for sale:
	Capitalized software	5		$	6,438			$	(1,018	)	$	5,420	$	11,508	$	(2,266	)	$	9,242
	Acquired intangibles:
	Developed software	6.1		19,250				(4,659		)	14,591		19,250		(7,875		)	11,375
	Customer relationships	8.1		12,700				(4,735		)	7,965		15,910		(6,800		)	9,110
	Trademarks	6.2		4,200				(2,118		)	2,082		4,200		(2,680		)	1,520
	Non-compete agreements	4.3		1,400				(633		)	767		1,400		(900		)	500
	Customer contracts	4.7		5,199				(3,643		)	1,556		6,299		(4,291		)	2,008
	Total other intangibles			$	49,187			$	(16,806	)	$	32,381	$	58,567	$	(24,812	)	$	33,755
	Amortization expense for intangible assets for the fiscal years ended March 31, 2012, 2013, and 2014, recorded in depreciation and amortization on the consolidated statements of income, was approximately $5.1 million, $5.8 million, and $8.0 million, respectively. The following approximates the aggregate amortization expense to be recorded in depreciation and amortization on the consolidated statements of income for each of the following five fiscal years ending March 31, 2015 through 2019: $8.8 million, $6.0 million, $5.5 million, $4.9 million, and $3.7 million, respectively, and $3.7 million thereafter.

Investment_in_unconsolidated_e

Investment in unconsolidated entity	12 Months Ended
	Mar. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]	'
Investment in unconsolidated entity	'
	Investments in and advances to unconsolidated entities
	In August 2011, the Company entered into an agreement with UPMC to establish Evolent for the purpose of driving provider-led, value-driven care with innovative technology, integrated data and analytics, and services. The Company provided $10.0 million and other non-cash contributions to Evolent for an initial equity interest of 44% in Series A convertible preferred stock of Evolent and the right to appoint one person to Evolent’s board of directors. The Company exercises significant influence over Evolent, but does not control Evolent and is not the primary beneficiary of Evolent’s activities. At the time of formation, the Series A convertible preferred shares of Evolent were deemed to be in-substance common stock. As a result, the Company’s investment in Evolent was accounted for under the equity method of accounting, with the Company’s proportionate share of the income or loss recognized in the consolidated statements of income. In addition, a member of the Company’s Board of Directors serves as the chief executive officer of Evolent.
	During the period from January 2013 through July 2013, the Company provided interim funding to Evolent in the form of a convertible term note bearing interest at a rate of 8% per year, with such interest accruing on a daily basis and compounded annually. The carrying balance of the note receivable was $4.4 million as of March 31, 2013. The Company provided additional funding of $5.6 million during the period from April 2013 to July 2013. The Company’s proportionate share of the losses recognized by Evolent during the six month period from April 1, 2013 through September 30, 2013 exceeded the Company’s investment balance. As a result, the Company’s proportionate share of the excess losses was applied to the Company’s notes receivable from Evolent at a rate consistent with the Company’s interest in Evolent’s outstanding debt, which was 44%. The carrying balance of the notes receivable was decreased by $4.0 million during the six months ended September 30, 2013 to reflect the Company’s portion of Evolent’s losses after the Company’s equity investment balance was reduced to zero.
	In September 2013, Evolent completed a reorganization in connection with a new round of equity financing (the “Series B Issuance”). Evolent’s reorganization included the creation of Evolent Health Holdings, Inc. ("Holdings") and the conversion of Evolent into Evolent LLC, a limited liability company that is treated as a partnership for tax purposes. As a result and immediately following the reorganization, Holdings owned 57% of the equity interests in Evolent LLC. Holdings has no other operations other than its investment in Evolent LLC. The Company, together with certain other investors, also holds direct equity interests in Evolent LLC, which will continue as the operating company that will conduct the Evolent business. The Company participated in the Series B Issuance by providing $9.6 million in cash and converting $10.1 million in principal and accrued interest of the convertible term note described above in exchange for 1,302,172 Series B convertible preferred shares in Evolent LLC and the right to appoint an additional person to the boards of directors of both Evolent LLC and Holdings. The conversion of all outstanding principal and accrued interest under the note into equity securities generated a $4.0 million gain. The gain is included in equity in loss of unconsolidated entities on the consolidated statements of income for the fiscal year ended March 31, 2014. Immediately following the Series B Issuance and reorganization, the Company owned 23.6% of Holdings through its Series A convertible preferred investment and 11.5% of Evolent LLC through its Series B convertible preferred investment.
	On the date of the Series B Issuance, the Company re-evaluated the accounting for its investment in Holdings’ Series A convertible preferred stock. The Company determined that its Series A convertible preferred investment in Holdings should be accounted for under the cost method instead of the equity method since the investment no longer qualified as in-substance common stock. The carrying balance of the Company’s Series A convertible preferred investment in Holdings was $0 as of March 31, 2014.
	Evolent LLC maintains separate capital accounts for each of its shareholders; therefore, the Company accounts for its Series B convertible preferred investment in Evolent LLC under the equity method. During the fiscal year ended March 31, 2014, the Company’s proportionate share of the losses of Evolent LLC that was applied to the carrying value of its investment in Evolent LLC was $3.8 million. In addition, $0.4 million related to amortization of basis differences related to identified intangible assets was applied to the carrying value of its investment in Evolent LLC. As a result, the carrying balance of the Company’s investment in Series B convertible preferred shares of Evolent LLC was $15.9 million as of March 31, 2014. Because of Evolent LLC's treatment as a partnership for tax purposes, the losses of Evolent LLC pass through to the Company and the other shareholders. The Company's proportionate share of the losses of Evolent LLC are recorded net of the estimated tax benefit that the Company believes will be realized from the losses in equity in loss of unconsolidated entities on the consolidated statements of income. As a result of uncertainty associated with the realization of the deferred tax assets resulting from the tax benefit of the Evolent LLC losses, the Company has provided a full valuation allowance against this deferred tax asset as of March 31, 2014.
	As of March 31, 2014, the Company owned 23.1% of Holdings through its Series A convertible preferred investment and 11.3% of Evolent LLC through its Series B convertible preferred investment. The decrease in the equity interest occurred in January 2014 and is a result of Holdings completing a third round of equity financing (the "Series B-1 Issuance"), as well as an additional equity investment from a vendor.
	The Company’s proportionate share of the losses of Evolent during the fiscal years ended March 31, 2012 and March 31, 2013 was $1.3 million and $7.9 million, respectively. During the fiscal year ended March 31, 2014, the Company’s proportionate share of the losses of Evolent was $10.1 million. During the fiscal year ended March 31, 2014, the Company’s proportionate share of the losses of Evolent that was applied to the carrying value of its investment in Series A convertible preferred stock of Evolent was $1.9 million. Equity in loss of unconsolidated entities on the consolidated statements of income for the fiscal year ended March 31, 2013 includes a dilution gain of $1.1 million which the Company recognized in connection with Evolent’s July 2012 financing round. Evolent LLC is in the early stages of its business plan and, as a result, the Company expects both Holdings and its majority-owned subsidiary Evolent LLC to continue to incur losses in the future. The Company’s investment in Evolent LLC is evaluated for impairment whenever events or changes in circumstances indicate that there may be an other-than-temporary decline in value. As of March 31, 2014, the Company believes that no impairment charge is necessary.
	The following is a summary of the financial position of Evolent LLC, as of the dates presented (unaudited, in thousands):
		As of
		31-Mar-14
	Assets:
	Current assets	$	78,692
	Non-current assets	20,151
	Total assets	$	98,843
	Liabilities and Members’ Equity:
	Current liabilities	$	35,453
	Non-current liabilities	3,173
	Total liabilities	38,626
	Redeemable equity	78,360
	Members’ equity	(18,143		)
	Total liabilities and members’ equity	$	98,843
	The following is a summary of the operating results of Evolent LLC for the periods presented (unaudited, in thousands):
		Year Ended March 31,
		2012			2013			2014
	Revenue	$	—		$	—		$	35,788
	Operating expenses	—			—			(54,497		)
	Depreciation and amortization	—			—			(1,381		)
	Interest, net	—			—			16
	Taxes	—			—			—
	Net loss	$	—		$	—		$	(20,074	)
	The following is a summary of the financial position of Holdings (or its predecessor) as of the dates presented (unaudited, in thousands):
		As of
		31-Mar-13			31-Mar-14
	Assets:
	Current assets	$	9,842		$	—
	Non-current assets	10,571			48,172
	Total assets	$	20,413		$	48,172
	Liabilities and Members’ Equity:
	Current liabilities	$	11,716		$	—
	Non-current liabilities	10,116			—
	Total liabilities	21,832			—
	Redeemable shares	—			38,680
	Members’ equity	(1,419		)	9,492
	Total liabilities and members’ equity	$	20,413		$	48,172
	The following is a summary of the operating results of Holdings (or its predecessor) for the periods presented (unaudited, in thousands):
		Year Ended March 31,
		2012			2013			2014
	Revenue	$	1,480		$	13,082		$	25,671
	Operating expenses	(4,445		)	(36,183		)	(45,617		)
	Depreciation and amortization	(9		)	(1,038		)	(1,208		)
	Interest, net	7			(149		)	(820		)
	Taxes	—			333			(8		)
	Gain from deconsolidation	—			—			46,246
	Income/loss from investments	—			—			(7,141		)
	Net loss	$	(2,967	)	$	(23,955	)	$	17,123

Other_noncurrent_assets

Other non-current assets	12 Months Ended
	Mar. 31, 2014
Investments, All Other Investments [Abstract]	'
Other non-current assets	'
	Other non-current assets
	In June 2009, the Company invested in the convertible preferred stock of a private company that provides technology tools and support services to health care providers, including the Company’s members. In addition, the Company entered into a licensing agreement with that company. As part of its investment, the Company received warrants to purchase up to 6,015,000 shares of the company’s common stock at an exercise price of $1.00 per share as certain performance criteria are met. The warrants are exercisable through June 19, 2019. The warrants contain a net settlement feature and therefore are considered to be a derivative financial instrument. No adjustment was made to the fair value of the warrants during the fiscal year ended March 31, 2014. The warrants are recorded at their fair value, which was estimated at $550,000 as of March 31, 2013 and $550,000 as of March 31, 2014, and are included in other non-current assets on the consolidated balance sheets. The change in the fair value of the warrants is recorded in other income, net on the consolidated statements of income. For additional information regarding the fair value of these warrants, see Note 5, “Fair value measurements.” The convertible preferred stock investment is recorded at cost, and the carrying amount of this investment as of March 31, 2014 of $5.0 million is included in other non-current assets on the consolidated balance sheets. The convertible preferred stock accrues dividends at an annual rate of 8% that are payable if and when declared by the investee’s board of directors. As of March 31, 2014, no dividends had been declared by the investee or recorded by the Company. This investment is reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of this asset may not be recoverable. The Company believes that no such impairment indicators existed during the fiscal year ended March 31, 2013 or 2014.

Noncontrolling_interest

Noncontrolling interest	12 Months Ended
	Mar. 31, 2014
Noncontrolling Interest [Abstract]	'
Noncontrolling interest	'
	Noncontrolling interest
	On July 5, 2012, the Company entered into an agreement with an entity created for the sole purpose of providing consulting services for the Company on an exclusive basis. The Company’s relationship with the entity is governed by a services agreement and other documents that provide the entity’s owners the conditional right to require the Company to purchase their ownership interests (“Put Option”) at any time after certain conditions have been satisfied through December 31, 2014. As of March 31, 2014, these conditions had not been satisfied. These agreements also provide the Company a conditional right to require the entity’s owners to sell their ownership interests to the Company (“Call Option”) at any time between July 5, 2013 and December 31, 2014. The equity interest in this entity is classified as a redeemable noncontrolling interest, which is presented outside of permanent equity as the redemption is not solely within the Company’s control. The redeemable noncontrolling interest is recorded at its initial fair value of $0.1 million and has not been subsequently adjusted, as management’s current judgment is that it is not probable that the Put Option will become exercisable prior to its expiration due to uncertainty in the achievement of certain performance conditions specified in the agreement. If the Put Option were to become exercisable in the future, the estimated maximum total redemption amount of the redeemable noncontrolling interest under the Put Option would be approximately $7.5 million, which would be recorded as a reduction to net income available to common stockholders in the period when it is determined that exercise of the Put Option is probable.
	The Company has determined that this entity meets the definition of a variable interest entity over which it has significant influence and, as a result, has consolidated the results of this entity into its consolidated financial statements. noncontrolling interest represents the entity’s owners’ claims on consolidated investments where the Company owns less than a 100% interest. As of March 31, 2014, the Company has a 0% ownership interest in this entity. The Company records these interests at their initial fair value, adjusting the basis prospectively for the noncontrolling holders’ share of the respective consolidated investments’ results of operations and applicable changes in ownership.

Revolving_credit_facility

Revolving credit facility	12 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
Revolving credit facility	'
	Revolving credit facility
	On July 30, 2012, the Company entered into a $150.0 million five-year senior secured revolving credit facility under a credit agreement with a syndicate of lenders. The Company incurred financing fees of $0.8 million in relation to this transaction. Under the revolving credit facility, up to $150.0 million principal amount of borrowings and other credit extensions may be outstanding at any time, subject to compliance with specified financial ratios and the satisfaction of other customary conditions to borrowing. The maximum principal amount available under the credit agreement may be increased by up to an additional $50.0 million in minimum increments of $10.0 million at the Company’s election upon the satisfaction of specified conditions. The credit agreement contains a sublimit for up to $5.0 million principal amount of swing line loans outstanding at any time and a sublimit for the issuance of up to $10.0 million of letters of credit outstanding at any time. The facility loans may be borrowed, repaid and reborrowed from time to time during the term of the facility and will mature and be payable in full on July 30, 2017. Consequently, the amount outstanding under the revolving credit facility at the end of a period may not be reflective of the total amounts outstanding during such period.
	Amounts borrowed under the revolving credit facility generally will bear interest at an annual rate calculated, at the Company’s option, on the basis of either (a) an alternate base rate plus the applicable margin for alternate base rate loans under the credit agreement, which ranges from 0.75% to 1.5% based on the Company’s total leverage ratio, or (b) an adjusted London interbank offered rate ("LIBOR") plus the applicable margin for eurocurrency loans under the credit agreement, which ranges from 1.75% to 2.50% based on the Company’s total leverage ratio. The Company is required to pay a commitment fee on the unutilized portion of the facility at an annual rate of between 0.25% and 0.40% based on the Company’s total leverage ratio.
	As of March 31, 2013 and 2014, there were no amounts outstanding under the revolving credit facility and $150.0 million was available for borrowing.
	The Company is required under the revolving credit facility to satisfy three financial ratios on a quarterly basis. The Company was in compliance with these financial covenants as of March 31, 2014.

Stockholders_equity

Stockholders' equity	12 Months Ended
	Mar. 31, 2014
Equity [Abstract]	'
Stockholders' equity	'
	Stockholders’ equity
	In May 2013, the Company’s Board of Directors authorized an increase in its cumulative share repurchase program to $450 million of the Company’s common stock. The Company repurchased 223,438 shares, 385,314 shares, and 376,532 shares of its common stock at a total cost of approximately $6.6 million, $18.0 million, and $21.9 million in the fiscal years ended March 31, 2012, 2013, and 2014, respectively, pursuant to its share repurchase program. The total amount of common stock purchased from inception under the program as of March 31, 2014 was 16,026,626 shares at a total cost of $340.9 million. All repurchases to date have been made in the open market and have been retired as of March 31, 2014. No minimum number of shares subject to repurchase has been fixed and the share repurchase authorization has no expiration date. The Company has funded, and expects to continue to fund, its share repurchases with cash on hand, proceeds from the sale of marketable securities, and cash generated from operations. As of March 31, 2014, the remaining authorized repurchase amount was $87.2 million.
	During the fiscal year ended March 31, 2014, the Company retired 376,532 shares of its treasury stock. Upon retirement, these shares resumed the status of authorized but unissued stock. The treasury stock retirement resulted in reductions to common stock of $3,000, treasury stock of $21.9 million, and retained earnings of $21.9 million. During the fiscal year ended March 31, 2013, the Company retired 13,650,094 shares of its treasury stock. Upon retirement, these shares resumed the status of authorized but unissued stock. The treasury stock retirement resulted in reductions to common stock of $70,000, treasury stock of $307.8 million, and retained earnings of $307.7 million. A total of 16,026,626 shares of treasury stock have been retired to date. There was no effect on the total stockholders’ equity position as a result of the retirement.
	On May 1, 2012, the Company’s Board of Directors approved a two-for-one split of the Company’s common stock to be effected in the form of a stock dividend. As a result of this action, one additional share was issued on June 18, 2012 for each share held by stockholders of record at the close of business on May 31, 2012. The stock split did not have an impact on the Company’s consolidated financial position or results of operations. Share and per share amounts presented in the consolidated financial statements for dates before June 18, 2012 have been restated to reflect the impact of the stock split.

Stockbased_compensation

Stock-based compensation	12 Months Ended
	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock-based compensation	'
	Stock-based compensation
	Equity incentive plans
	The Company issues awards, including stock options and RSUs, under the Company’s 2005 Stock Incentive Plan (the “2005 Plan”) and 2009 Stock Incentive Plan (the “2009 Plan”), and issued such awards through September 11, 2009 under the Company’s 2006 Stock Incentive Plan (the “2006 Plan”). Upon approval of the 2009 Plan by the Company’s stockholders on September 11, 2009, the 2006 Plan was frozen with respect to new awards.
	On September 13, 2011, the Company’s stockholders approved an amendment to the 2009 Plan that increased the number of shares of common stock authorized for issuance under the plan by 2,500,000 shares. On September 5, 2013, the Company's stockholders approved an amendment to the 2009 Plan that increased the number of shares of common stock authorized for issuance under the plan by 2,125,000 shares. The aggregate number of shares of the Company’s common stock available for issuance under the 2009 Plan, as amended, may not exceed 6,735,000, plus the shares that remained available for issuance under the 2006 Plan as of June 26, 2009 and the number of shares subject to outstanding awards under the 2006 Plan that, on or after such date, cease for any reason to be subject to such awards (other than reason of exercise or settlement of the awards to the extent they are exercised for or settled in vested and non-forfeitable shares). On September 5, 2013, the Company's stockholders also approved an amendment to the 2009 Plan that increased the maximum term for stock option and freestanding stock appreciation rights awards granted under the plan from five years to seven years. Stock-based awards granted under the 2006 Plan have a five-year maximum contractual term and stock-based awards granted under the 2009 Plan have a seven-year maximum contractual term. The aggregate number of shares of the Company’s common stock available for issuance under the 2005 Plan may not exceed 3,200,000, plus the shares that remained available for issuance under the Company’s 2001 Stock Incentive Plan (the “2001 Plan”) as of November 15, 2005 and shares subject to outstanding awards under the 2001 Plan that, on or after such date, cease for any reason to be subject to such awards (other than reason of exercise or settlement of the awards to the extent they are exercised for or settled in vested and non-forfeitable shares). Stock-based awards granted under the 2005 Plan have a seven-year maximum contractual term. As of March 31, 2014, there were 2,384,443 shares available for issuance under the 2009 Plan and 715,670 shares available for issuance under the 2005 Plan.
	The 2009 Plan and the 2005 Plan (the “Plans”) are administered by the Compensation Committee of the Company’s Board of Directors, which has the authority to determine which officers, directors, employees, and other service providers are awarded options or share awards pursuant to the Plans and to determine the terms of the awards. Grants may consist of treasury shares or newly issued shares. Options are rights to purchase common stock of the Company at the fair market value on the date of grant. The exercise price of a stock option or other equity-based award is equal to the closing price of the Company’s common stock on the date of grant. The Company generally awards non-qualified options, but the Plans permit the issuance of options intended to qualify as incentive stock options under Section 422 of the Internal Revenue Code. Holders of options do not participate in dividends, if any, until after the exercise of the award. RSUs are equity settled stock-based compensation arrangements of a number of shares of the Company’s common stock. RSU holders do not participate in dividends, if any, nor do they have voting rights until the restrictions lapse.
	Stock option activity. During the fiscal years ended March 31, 2012, 2013, and 2014, the Company granted 601,412, 361,844, and 536,958 stock options, respectively, with a weighted average exercise price of $24.98, $44.00, and $51.71, respectively. The weighted average fair values of the stock option grants are listed in the stock option valuation section below. During the fiscal years ended March 31, 2012, 2013, and 2014, participants exercised 1,775,510, 1,477,219, and 1,327,358 options for a total intrinsic value of $27.1 million, $44.3 million, and $53.7 million, respectively. Intrinsic value is calculated as the number of shares exercised times the Company’s stock price at exercise less the exercise price of the option.
	The following table summarizes the changes in common stock options during the fiscal years ended March 31, 2012, 2013, and 2014 for all of the stock incentive plans described above.
		Year Ended March 31,
		2012							2013					2014
		Number of			Weighted				Number of			Weighted		Number of		Weighted
		Options			Average				Options			Average		Options		Average
					Exercise							Exercise				Exercise
					Price							Price				Price
	Outstanding, beginning of year	5,059,198			$	16.4			3,812,228			$	17.05	2,692,353		$	21.06
	Granted	601,412			24.98				361,844			44		536,958		51.71
	Exercised	(1,775,510	)		17.48				(1,477,219	)		16.35		(1,327,358	)	16.6
	Forfeited	(72,872	)		20.33				(4,500	)		9.26		(71,630	)	32.93
	Outstanding, end of year	3,812,228			$	17.05			2,692,353			$	21.06	1,830,323		$	32.82	-1
	Exercisable, end of year													680,978		$	19.57	-2
	—————————————
	-1	The weighted average remaining contractual term for the fiscal year ended March 31, 2014 is approximately three years and the aggregate intrinsic value is $57.7 million.
	-2	The weighted average remaining contractual term for the fiscal year ended March 31, 2014 is approximately two years and the aggregate intrinsic value is $30.4 million.
	The aggregate intrinsic value shown in the footnotes of the table above is the sum of the amounts by which the quoted market price of the Company’s common stock exceeded the exercise price of the options as of March 31, 2014, for those options for which the quoted market price was in excess of the exercise price. This amount changes over time based on changes in the fair market value of the Company’s common stock. During the fiscal years ended March 31, 2012, 2013, and 2014, 729,182, 710,972, and 850,087 options, respectively, vested with fair values of $3.0 million, $3.8 million, and $5.3 million, respectively.
	The following table summarizes the exercise prices and contractual lives of all options outstanding under the stock incentive plans described above as of March 31, 2014:
		Options Outstanding and Exercisable
	Range of Exercise Prices	Shares			Weighted				Weighted
					Average				Average
					Exercise				Remaining
					Price				Contractual
									Life - Years
	$  0.00 – $   9.99	219,906			$	9.26			2.1
	10.00 –    19.99	284,332			16.85				2
	20.00 –    29.99	471,791			24.62				2.9
	30.00 –    39.99	5,000			34.06				2.7
	40.00 –    49.99	730,776			46.15				4.3
	50.00 –    59.99	11,253			57.88				6.4
	60.00 –    69.99	107,265			66.06				6.9
	$  0.00 – $ 69.99	1,830,323			$	32.82			3.5
	Restricted stock unit activity. During the fiscal years ended March 31, 2012, 2013, and 2014, the Company granted 464,700, 342,240, and 550,384 RSUs, respectively, the majority of which vest in four equal annual installments on the anniversary of the grant date. The valuation of RSUs is determined as the fair market value of the underlying shares on the date of grant. The weighted average grant date fair value of RSUs granted for the fiscal years ended March 31, 2012, 2013, and 2014 was $24.81, $44.39, and $53.64, respectively. During the fiscal years ended March 31, 2012, 2013, and 2014, participants vested in 226,168, 292,020, and 346,310 RSUs, respectively, for a total intrinsic value of $7.2 million, $13.6 million, and $17.2 million, respectively. Intrinsic value is calculated as the number of shares vested times the Company’s closing stock price at the vesting date. Of the RSUs vested in the fiscal years ended March 31, 2012, 2013, and 2014, 75,662, 89,155, and 119,108 shares, respectively, were withheld to satisfy minimum employee tax withholding.
	The following table summarizes the changes in RSUs during the fiscal years ended March 31, 2012, 2013, and 2014 for all of the stock incentive plans described above.
		Year Ended March 31,
		2012							2013					2014
		Number of			Weighted				Number of			Weighted		Number of		Weighted
		RSUs			Average				RSUs			Average		RSUs		Average
					Grant							Grant				Grant
					Date							Date				Date
					Fair							Fair				Fair
					Value							Value				Value
	Non-vested, beginning of year	664,218			$	17.34			896,640			$	20.77	943,206		$	29.5
	Granted	464,700			$	24.81			342,240			$	44.39	550,384		$	53.64
	Forfeited	(6,110	)		$	23.53			(3,654	)		$	19.98	(36,818	)	$	39.88
	Vested	(226,168	)		$	18.92			(292,020	)		$	20.26	(346,310	)	$	26.53
	Non-vested, end of year	896,640			$	20.77			943,206			$	29.5	1,110,462		$	42.05
	Employee stock purchase plan
	The Company sponsors an employee stock purchase plan (“ESPP”) for all eligible employees. Under the ESPP, employees authorize payroll deductions from 1% to 15% of their eligible compensation to purchase shares of the Company’s common stock. Under the ESPP, shares of the Company’s common stock may be purchased at the end of each fiscal quarter at 95% of the closing price of the Company’s common stock. A total of 1,684,000 shares of the Company’s common stock are authorized under the ESPP. As of March 31, 2014, a total of 1,487,207 shares were available for issuance under the ESPP. During the fiscal years ended March 31, 2012, 2013, and 2014, the Company issued 6,684, 7,748, and 8,962 shares, respectively, under the ESPP at an average price of $33.17, $46.77, and $57.31 per share, respectively. The compensation expense related to the ESPP recorded in the fiscal years ended March 31, 2012, 2013, and 2014 was not material to the consolidated financial statements.
	Valuation assumptions and equity based award activity
	As discussed in Note 2, “Summary of significant accounting policies,” determining the estimated fair value of stock-based awards is judgmental in nature and involves the use of significant estimates and assumptions, including the term of the stock-based awards, risk-free interest rates over the vesting period, expected dividend rates, the price volatility of the Company’s shares, and forfeiture rates of the awards.
	Stock option valuation
	The Company calculates the fair value of all stock option awards, with the exception of the stock options issued with market-based conditions, on the date of grant using the Black-Scholes model. The expected term for its stock options is determined through analysis of historical data on employee exercises, vesting periods of awards, and post-vesting employment termination behavior. The risk-free interest rate is based on U.S. Treasury bonds issued with life terms similar to the expected life of the grant. Volatility is calculated based on historical volatility of the daily closing price of the Company’s common stock continuously compounded with a look-back period similar to the terms of the expected life of the grant. The Company has not declared or paid any cash dividends on its common stock since the closing of its initial public offering and does not currently anticipate declaring or paying any cash dividends. The timing and amount of future cash dividends, if any, is periodically evaluated by the Company’s Board of Directors and would depend upon, among other factors, the Company’s earnings, financial condition, cash requirements, and contractual restrictions.
	The following average key assumptions were used in the valuation of stock options granted in each respective period:
		Year Ended March 31,
		2012			2013			2014
	Stock option grants:
Risk-free interest rate	0.66% – 2.22%			0.43% – 1.15%			0.34% – 1.71%
Expected lives in years	3.00 – 5.25			3.25 – 5.50			3.25 – 5.50
Expected volatility	36.7% – 41.6%			33.2% – 40.7%			30.4% – 38.0%
Dividend yield	—	%		—	%		—	%
Weighted average exercise price of options granted	24.98			44			51.71
Weighted average grant date fair value of options granted	8.24			13.33			14.77
Number of options granted	601,412			361,844			536,958
Valuation for restricted stock units
RSUs are valued at the grant date closing price of the Company’s common stock as reported by The NASDAQ Stock Market LLC (“NASDAQ”).
Valuation for employee stock purchase rights
The value of employee stock purchase rights for shares of stock purchased under the ESPP is determined as the fair market value of the underlying shares on the date of purchase as determined by the closing price of the Company’s common stock as reported by NASDAQ, less the purchase price, which is 95% of the closing price of the Company’s common stock. The ESPP enrollment begins on the first day of the quarter. Stock purchases occur on the last day of the quarter, with only eligible employee payroll deductions for the period used to calculate the shares purchased. There is no estimate of grant date fair value or estimated forfeitures, since actual compensation expense was recorded in the period on the purchase date. The fair value of employee stock purchase rights is equivalent to a 5% discount of the purchase date closing price.
Forfeitures
Forfeitures are estimated based on historical experience at the time of grant and adjusted, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Stock-based compensation expense is recognized on a straight-line basis, net of an estimated forfeiture rate, for only those shares expected to vest over the requisite service period of the award, which is generally the option vesting term, and can range from six months to four years. Changes in estimated forfeitures will be recognized through a cumulative catch-up adjustment in the period of change and will also impact the amount of compensation expense to be recognized in future periods. The Company analyzes forfeiture rates using four separate groups, one group for members of the Company’s Board of Directors, two separate groups of executives based on seniority, and one group for general employees. In the fiscal year ended March 31, 2014, the Company decreased its estimated forfeiture rate for the general employee group from 15%, to 10%. Forfeiture rates for the remaining groups are 0%, 1%, and 5% for members of the Company's Board of Directors and two separate groups of executives based on seniority, respectively.
Compensation expense
The Company recognized stock-based compensation expense in the following consolidated statements of income line items for stock options and RSUs and for shares issued under the Company’s ESPP, for the fiscal years ended March 31, 2012, 2013, and 2014 (in thousands, except per share amounts):
	Year Ended March 31,
	2012				2013				2014
Stock-based compensation expense included in:
Costs and expenses:
Cost of services	$	3,440			$	3,975			$	5,527
Member relations and marketing	2,133				2,643				3,688
General and administrative	6,413				7,295				9,002
Depreciation and amortization	—				—				—
Total costs and expenses	11,986				13,913				18,217
Operating income	(11,986		)		(13,913		)		(18,217		)
Net income attributable to common stockholders	$	(7,359	)		$	(8,686	)		$	(11,204	)
Impact on diluted earnings per share	$	(0.21	)		$	(0.24	)		$	(0.30	)
There are no stock-based compensation costs capitalized as part of the cost of an asset.
Stock-based compensation expense by award type is shown below (in thousands):
	Year Ended March 31,
	2012				2013				2014
Stock-based compensation expense by award type:
Stock options	$	5,072			$	5,000			$	4,846
Restricted stock units	6,914				8,913				13,371
Employee stock purchase rights	—				—				—
Total stock-based compensation	$	11,986			$	13,913			$	18,217
As of March 31, 2014, $43.4 million of total unrecognized compensation cost related to stock-based compensation was expected to be recognized over a weighted average period of 2.9 years.
Tax benefits
The benefits of tax deductions in excess of recognized book compensation expense are reported as a financing cash inflow in the consolidated statements of cash flows. Approximately $7.6 million, $20.5 million, and $19.5 million of tax benefits associated with the exercise of employee stock options and restricted stock units were recorded as cash from financing activities in the fiscal years ended March 31, 2012, 2013, and 2014, respectively.

Income_taxes

Income taxes	12 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Income taxes	'
	Income taxes
	The provision for income taxes consists of the following (in thousands):
		Year Ended March 31,
		2012				2013				2014
	Current	$	14,903			$	17,382			$	11,413
	Deferred	304				641				7,795
	Provision for income taxes	$	15,207			$	18,023			$	19,208
	The provision for income taxes differs from the amount of income taxes determined by applying the applicable income tax statutory rates to income before provision for income taxes as follows:
		Year Ended March 31,
		2012			2013			2014
	Statutory U.S. federal income tax rate	35	%		35	%		35	%
	State income tax, net of U.S. federal income tax benefit	5.5	%		5.9	%		6	%
	Tax-exempt interest income	(1.5	)%		(2.0	)%		(1.7	)%
	Washington, D.C. QHTC income tax credits	(3.1	)%		(5.4	)%		(4.0	)%
	Other permanent differences, net	2.7	%		4	%		3.2	%
	Effective tax rate on continuing operations	38.6	%		37.5	%		38.5	%
	Deferred income taxes are provided for temporary differences between the tax bases of assets and liabilities and their reported amounts on the consolidated financial statements. The tax effect of these temporary differences is presented below (in thousands):
		As of March 31,
		2013				2014
	Deferred income tax assets (liabilities):
	Tax credit carryforwards	$	10,848			$	11,199
	Deferred compensation accrued for financial reporting purposes	8,592				11,692
	Stock-based compensation	8,548				8,942
	Acquired net operating loss carryforwards	3,279				5,444
	Reserve for uncollectible revenue	2,355				2,812
	Book/tax basis difference in investment in unconsolidated entities	—				1,677
	Unrealized losses on available-for-sale securities	—				1,270
	Acquired intangibles and goodwill	195				—
	Other	778				1,628
	Total deferred tax assets	34,595				44,664
	Valuation allowance	—				(1,677		)
	Total deferred tax assets, net of valuation allowance	34,595				42,987
	Capitalized software development costs	(14,648		)		(22,659		)
	Deferred incentive compensation and other deferred charges	(5,968		)		(9,234		)
	Acquired intangibles and goodwill	—				(5,097		)
	Unrealized gains on available-for-sale securities	(680		)		—
	Depreciation	(2,417		)		(1,616		)
	Other	(225		)		(426		)
	Total deferred tax liabilities	(23,938		)		(39,032		)
	Net deferred income tax assets	$	10,657			$	3,955
	The Company has $15.6 million of U.S. federal and state net operating loss carryforwards available at March 31, 2014 as a result of recent acquisitions. These carryforwards will be used to offset future income but maybe limited by the change in ownership rules in Section 382 of the Internal Revenue Code. These net operating loss carryforwards will expire through 2021. The Company anticipates it will be able to use all of its acquired net operating loss carryforwards. In estimating future tax consequences, the Company generally considers all expected future events in the determination and evaluation of deferred tax assets and liabilities. The Company believes that its estimated future ordinary taxable income will be sufficient for the full realization of its deferred income tax assets other than its investment in unconsolidated subsidiaries which may generate a capital loss. The effect of future changes in existing laws or rates is not considered in the determination and evaluation of deferred tax assets and liabilities until the new tax laws or rates are enacted.
	The Company has recorded a deferred tax asset resulting from the book tax basis difference in investment in unconsolidated entities. The Company has recorded a $1.7 million valuation allowance related to this asset.
	The Company uses a more-likely-than-not recognition threshold based on the technical merits of the tax position taken for the financial statement recognition and measurement of a tax position. If a tax position does not meet the more-likely-than-not initial recognition threshold, no benefit is recorded in the financial statements. The Company does not currently anticipate that the total amounts of unrecognized tax benefits (of which the amount was $0 as of March 31, 2013 and 2014) will significantly change within the next twelve months. The Company classifies interest and penalties on any unrecognized tax benefits as a component of the provision for income taxes. No interest or penalties were recognized in the consolidated statements of income for the fiscal years ended March 31, 2012, 2013, or 2014. The Company files income tax returns in U.S. federal and state and foreign jurisdictions. With few exceptions, the Company is no longer subject to U.S. federal, state, and local tax examinations for filings in major tax jurisdictions before 2010.
	Washington, D.C. income tax incentives
	The Office of Tax and Revenue of the Government of the District of Columbia (the “Office of Tax and Revenue”) provides regulations that modify the income and franchise tax, sales and use tax, and personal property tax regulations for Qualified High Technology Companies (“QHTC”) doing business in the District of Columbia.
	In February 2006, the Company received notification from the Office of Tax and Revenue that its certification as a QHTC under the New E-conomy Transformation Act of 2000 had been accepted effective as of January 1, 2004. As a QHTC, the Company’s Washington, D.C. statutory income tax rate was 0.0% through calendar year 2008 and 6.0% thereafter, compared to 9.975% prior to this qualification. Under that Act, the Company is also eligible for certain Washington, D.C. income tax credits and other benefits. As of March 31, 2014, the Company has $17.2 million of Washington, D.C. tax credits with expiration dates ranging from 2017 to 2024.

Commitments_and_contingencies

Commitments and contingencies	12 Months Ended
	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and contingencies	'
	Commitments and contingencies
	Operating leases
	The Company leases approximately 70% of its headquarters space under an operating lease (the “Lease”) that expires in 2019. Leasehold improvements related to leases are depreciated over the term of the Lease and totaled approximately $17.5 million, net, and $25.3 million, net, as of March 31, 2013 and 2014, respectively. The terms of the Lease contain provisions for rental escalation, and the Company is required to pay its portion of executory costs such as taxes, insurance, and operating expenses. The remaining space in our headquarters facility is under a sublease expiring in 2017. The sublease contains provisions for annual rental escalations with no obligation to pay additional executory costs noted above.
	The Company leases office space under operating leases in Austin, Texas; Nashville, Tennessee; Vernon Hills, Illinois; Evanston, Illinois; San Francisco, California; Ann Arbor, Michigan; Plymouth Meeting, Pennsylvania; Tucson, Arizona; and London, England. The Company also leases office space in Chennai, India through its Indian subsidiary, ABCO Advisory Services India Private Ltd. The lease expiration dates are March 2021 for the Texas leases, April 2020 for the Tennessee leases, March 2015 for the Illinois leases, August 2017 for the California lease, December 2014 for the Michigan lease, September 2016 for the Pennsylvania lease, August 2014 for the Arizona lease, July 2014 for the England lease, and December 2016 for the India lease. The Company recognized rental and executory expenses of $11.9 million, $14.2 million, and $17.4 million in the fiscal years ended March 31, 2012, 2013, and 2014, respectively, related to these leases. The Company subleases office space in Nashville, Tennessee. The total of minimum rentals to be received in the future under non-cancelable subleases as of March 31, 2014 is $0.2 million.
	The following table details the future minimum lease payments under the Company’s current leases, excluding rental escalation and executory costs (in thousands):
	Year Ending March 31,
	2015	13,563
	2016	13,200
	2017	13,054
	2018	10,733
	2019	10,382
	Thereafter	6,112
	Total	$	67,044
	Purchase obligation
	The Company entered into a non-cancelable agreement for the purchase of data. As of March 31, 2014, the Company’s minimum obligation in connection with this agreement extends through May 2019. The minimum payments expected to be made under this agreement for each of the following five fiscal years ending March 31, 2015 through 2019 are: $5.0 million, $5.0 million, $3.0 million, $2.0 million, and $1.0 million, respectively.
	Benefit plan
	The Company sponsors a defined contribution 401(k) plan (the “401(k) Plan”) for all employees who have reached the age of 21. The Company provides discretionary matching contributions in the range of 0% to 100%, which percentage is determined by the Company after the end of the applicable plan year, of an employee’s contribution up to a maximum of 4% of base salary. Contributions to the 401(k) Plan for the fiscal years ended March 31, 2012, 2013, and 2014 were approximately $2.9 million, $2.7 million, and $4.6 million, respectively.
	Litigation
	From time to time, the Company is subject to ordinary routine litigation incidental to its normal business operations. As of March 31, 2014, the Company was not a party to, and its property was not subject to, any material legal proceedings.

Segments_and_geographic_areas

Segments and geographic areas	12 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Segments and geographic areas	'
	Segments and geographic areas
	Operating segments are components of an enterprise about which separate financial information is available and regularly evaluated by the chief operating decision maker of an enterprise. Under this definition, the Company contains two operating segments as of March 31, 2014. Both segments have similar economic characteristics, provide similar products and services sold to the same or very similar customers, and have similar sales and distribution procedures. Consequently, the Company has one reportable segment for financial statement purposes.
	Substantially all of the Company’s identifiable assets are located in the United States. The following table sets forth revenue information for each geographic area for the fiscal years ended March 31, 2012, 2013, and 2014 (in thousands):
		Year Ended March 31,
		2012		2013		2014
	United States	$	357,937	$	434,640	$	504,211
	Other countries	12,408		16,197		16,385
	Total revenue	$	370,345	$	450,837	$	520,596

Quarterly_financial_data

Quarterly financial data	12 Months Ended
	Mar. 31, 2014
Quarterly Financial Information Disclosure [Abstract]	'
Quarterly financial data	'
	Quarterly financial data (unaudited)
	Unaudited summarized financial data by quarter for the fiscal years ended March 31, 2013 and 2014 are as follows (in thousands, except per share amounts):
		Fiscal 2013 Quarter Ended
		June 30,		September 30,		December 31,		March 31,
	Revenue	$	104,142	$	110,758	$	116,231	$	119,706
	Operating income	$	10,365	$	12,490	$	9,736	$	12,884
	Income from continuing operations before provision for income taxes and equity in loss of unconsolidated entities	$	10,941	$	13,178	$	10,474	$	13,486
	Net income attributable to common stockholders	$	4,627	$	7,647	$	4,592	$	6,542
	Earnings per share:
	Basic	0.14		0.22		0.13		0.19
	Diluted	0.13		0.21		0.13		0.18
		Fiscal 2014 Quarter Ended
		June 30,		September 30,		December 31,		March 31,
	Revenue	$	123,216	$	128,341	$	131,038	$	138,001
	Operating income	$	10,738	$	11,390	$	7,875	$	17,183
	Income from continuing operations before provision for income taxes and equity in loss of unconsolidated entities	$	11,261	$	12,481	$	8,235	$	17,915
	Net income attributed to common stockholders	$	3,692	$	9,002	$	3,771	$	8,287
	Earnings per share:
	Basic	0.1		0.25		0.1		0.23
	Diluted	0.1		0.24		0.1		0.22
	As described in Note 2, "Summary of significant accounting policies," the Company revised certain items in the consolidated financial statements for the fiscal year ended March 31, 2013, and certain quarters within fiscal year ended March 31, 2013 to correct an error attributable to the omission of certain payroll-related benefits from the Company's capitalization of software development costs. The impact of the errors in the prior periods was not material to the Company in any of those periods; however, an adjustment to correct the aggregate amount of the prior period errors would have been material to the Company’s current year statement of income. The Company has applied the guidance for accounting changes and error correction and has corrected these errors for all prior periods presented by revising the consolidated financial statements and other financial information included in this report. The Company has also corrected an error related to the timing of a prior period acquisition-related earn-out fair value adjustment. The understatement of the liability as of March 31, 2012 was corrected during fiscal 2013.
	In connection with the revision for the software cost capitalization error, the Company has revised the affected financial statements to correct the error in the proper period. The correction of the foregoing errors for the fiscal 2013 periods, which is included in the table above, resulted in a net increase to previously reported operating income of $1.3 million, $0.3 million, $0.2 million and $0.2 million for the quarters ended June 30, 2012, September 30, 2012, December 31, 2012, and March 31, 2013, respectively. Net income attributed to common stockholders increased approximately $0.8 million, $0.2 million, $0.2 million and $0.1 million for the quarters ended June 30, 2012, September 30, 2012, December 31, 2012, and March 31, 2013, respectively. Basic earnings per share increased approximately $.03 for the quarter ended June 30, 2012 and $.01 for the quarter ended in March 31, 2013. There was no impact to basic earnings per share for the quarters ended September 30, 2012 or December 31, 2012.
	The Company has concluded that the errors are not material to any of the previously reported interim financial statements. Nevertheless, the affected interim financial statements will be revised when reissued in future periodic filings.

Subsequent_events

Subsequent events	12 Months Ended
	Mar. 31, 2014
Subsequent Events [Abstract]	'
Subsequent events	'
	Subsequent events
	On May 5, 2014, the Company completed the acquisition for cash of HealthPost, Inc., a technology firm with a cloud-based ambulatory scheduling solution to supplement the Company's existing suite of Crimson programs. The total purchase price was approximately $26.0 million. The Company is in the process of finalizing the purchase price allocation and valuation of certain intangible assets.

Schedule_II_Valuation_and_Qual

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Mar. 31, 2014
Valuation and Qualifying Accounts [Abstract]	'
Schedule II - Valuation and Qualifying Accounts	'
	THE ADVISORY BOARD COMPANY
	SCHEDULE II—Valuation and Qualifying Accounts
	(In thousands)
		Balance		Additions		Additions		Deductions		Balance
		at		Charged		Charged to		From		at End of
		Beginning		to		Other		Reserve		Year
		of Year		Revenue		Accounts
	Year ended March 31, 2012 Allowance for uncollectible revenue	$	4,885	$	4,640	$	—	$	3,985	$	5,540
	Year ended March 31, 2013 Allowance for uncollectible revenue	$	5,540	$	5,685	$	—	$	5,459	$	5,766
	Year ended March 31, 2014 Allowance for uncollectible revenue	$	5,766	$	8,011	$	—	$	6,927	$	6,850

Summary_of_significant_account1

Summary of significant accounting policies (Policies)	12 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Basis of presentation and consolidation	'
	Basis of presentation and consolidation
	The consolidated financial statements include the accounts of the Company, its wholly-owned subsidiaries, and a consolidated variable interest entity. The Company uses the equity method to account for equity investments in instances in which it owns common stock or securities deemed to be in-substance common stock and has the ability to exercise significant influence, but not control, over the investee and for all investments in partnerships or limited liability companies where the investee maintains separate capital accounts for each investor. Investments in which the Company holds securities that are not in-substance common stock, or holds common stock or in-substance common stock, but has little or no influence are accounted for using the cost method. All significant intercompany transactions and balances have been eliminated.
	On June 18, 2012, the Company completed a two-for-one split of its outstanding shares of common stock in the form of a stock dividend. Each stockholder of record received one additional share of common stock for each share of common stock owned at the close of business on May 31, 2012. Share numbers and per share amounts presented in the accompanying consolidated financial statements and these notes thereto for dates before June 18, 2012 have been restated to reflect the impact of the stock split.
Use of estimates in preparation of consolidated financial statements	'
	Use of estimates in preparation of consolidated financial statements
	The Company’s consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). These accounting principles require the Company to make certain estimates, judgments, and assumptions. For cases where the Company is required to make certain estimates, judgments, and assumptions, the Company believes that the estimates, judgments, and assumptions upon which it relies are reasonable based upon information available to the Company at the time that these estimates, judgments, and assumptions are made. These estimates, judgments, and assumptions can affect the reported amounts of assets and liabilities as of the date of the financial statements as well as the reported amounts of revenue and expenses during the periods presented. To the extent there are material differences between these estimates, judgments, or assumptions and actual results, the Company’s financial statements will be affected. The Company’s estimates, judgments, and assumptions may include: estimates of bad debt reserves; estimates to establish employee bonus and commission accruals; estimates of the fair value of contingent earn-out liabilities; estimates of the useful lives of acquired or internally developed intangible assets; estimates of the fair value of goodwill and intangibles and evaluation of impairment; determination of when investment impairments are other-than-temporary; estimates of the recoverability of deferred tax assets; and estimates of the potential for future tax consequences of events that have been recognized in the Company’s financial statements or tax returns.
Cash equivalents and marketable securities	'
	Cash equivalents and marketable securities
	Included in cash equivalents are marketable securities with original maturities of three months or less at purchase. Investments with original maturities of more than three months are classified as marketable securities. Current marketable securities have maturity dates within twelve months of the balance sheet date. As of March 31, 2013 and 2014, the Company’s marketable securities consisted of U.S. government-sponsored enterprise obligations and various state tax-exempt notes and bonds. The Company’s marketable securities, which are classified as available-for-sale, are carried at fair market value based on quoted market prices. The net unrealized gains and losses on available-for-sale marketable securities are excluded from net income attributable to common stockholders and are included within accumulated other comprehensive income, net of tax. The specific identification method is used to compute the realized gains and losses on the sale of marketable securities.
Allowance for uncollectible revenue	'
	Allowance for uncollectible revenue
	The Company’s ability to collect outstanding receivables from its members has an effect on the Company’s operating performance and cash flows. The Company records an allowance for uncollectible revenue as a reduction of revenue based on its ongoing monitoring of members’ credit and the aging of receivables. To determine the allowance for uncollectible revenue, the Company examines its collections history, the age of accounts receivable in question, any specific member collection issues that have been identified, general market conditions, and current economic trends. Membership fees receivable balances are not collateralized.
Property and equipment	'
	Property and equipment
	Property and equipment consists of leasehold improvements, furniture, fixtures, equipment, capitalized internal use software development costs, and acquired developed technology. Property and equipment is stated at cost, less accumulated depreciation and amortization. In certain membership programs, the Company provides software applications under a hosting arrangement where the software application resides on the Company’s or its service providers’ hardware. The members do not take delivery of the software and only receive access to the software during the term of their membership agreement.
	Computer software development costs that are incurred in the preliminary project stage for internal use software are expensed as incurred. During the development stage, direct consulting costs and payroll and payroll-related costs for employees that are directly associated with each project are capitalized and amortized over the estimated useful life of the software once it is placed into operation. Internally developed capitalized software is classified as software within property and equipment and is amortized using the straight-line method over its estimated useful life, which is generally five years. Replacements and major improvements are capitalized, while maintenance and repairs are charged to expense as incurred. Amortization expense for internally developed capitalized software for the fiscal years ended March 31, 2012, 2013, and 2014, recorded in depreciation and amortization on the consolidated statements of income, was approximately $3.8 million, $4.8 million, and $9.2 million, respectively.
	The acquired developed technology is classified as software within property and equipment because the developed software application resides on the Company’s or its service providers’ hardware. Amortization for acquired developed software is included in depreciation and amortization on the consolidated statements of income. Acquired developed software is amortized over a weighted average estimated useful life of six years based on the cash flow estimate used to determine the value of the intangible asset. The amount of acquired developed software amortization included in depreciation and amortization for the fiscal years ended March 31, 2012, 2013, and 2014 was approximately $0.9 million, $0.9 million, and $1.7 million, respectively.
	Furniture, fixtures, and equipment are depreciated using the straight-line method over the estimated useful lives of the assets, which range from three to seven years. Leasehold improvements are depreciated using the straight-line method over the shorter of the estimated useful lives of the assets or the lease term. There are no capitalized leases included in property and equipment. The amount of depreciation expense recognized on plant, property and equipment during the fiscal years ended March 31, 2012, 2013, and 2014 was $5.2 million, $8.4 million, and $11.5 million, respectively.
Business combinations	'
	Business combinations
	The Company records acquisitions using the purchase method of accounting. All of the assets acquired, liabilities assumed, contractual contingencies, and contingent consideration are recognized at their fair value on the acquisition date. All subsequent changes to a valuation allowance or uncertain tax position that relate to the acquired company and existed at the acquisition date that occur both within the measurement period and as a result of facts and circumstances that existed at the acquisition date are recognized as an adjustment to goodwill. All other changes in valuation allowance are recognized as a reduction or increase to expense or as a direct adjustment to additional paid-in capital as required. Any acquired in-process research and development is capitalized as an intangible asset and amortized over its estimated useful life. Acquisition-related costs are recorded as expenses in the consolidated financial statements. The results of operations of acquired businesses are included in the consolidated financial statements from the acquisition date.
Goodwill and other intangible assets	'
	Goodwill and other intangible assets
	The excess cost of an acquisition over the fair value of the net assets acquired is recorded as goodwill. The primary factors that generate goodwill are the value of synergies between the acquired entities and the Company and the acquired assembled workforce, neither of which qualifies as an identifiable intangible asset. The Company’s goodwill and other intangible assets with indefinite lives are not amortized, but rather tested for impairment on an annual basis on March 31, or more frequently if events or changes in circumstances indicate potential impairment. The Company has concluded that its reporting units used to assess goodwill impairment are the same as its operating segments.
	When testing for impairment, the Company first performs a qualitative assessment on a reporting unit to determine whether further quantitative impairment testing is necessary. If an initial qualitative assessment identifies that it is more likely than not that the carrying value of a reporting unit exceeds its estimated fair value, additional quantitative testing is performed. If the quantitative testing indicates that goodwill is impaired, the carrying value of goodwill is written down to fair value. If the quantitative testing is performed, the Company would determine the fair value of its reporting units based on the income approach. Under the income approach, the fair value of a reporting unit is calculated based on the present value of estimated future cash flows. Based on the Company’s qualitative assessment as of March 31, 2014, management believed that no reporting unit was at risk of failing an impairment test that would result in an impairment charge. No quantitative testing was deemed necessary.
	Other intangible assets consist of capitalized software for sale and acquired intangibles. The Company capitalizes consulting costs and payroll and payroll-related costs for employees directly related to building a software product for sale once technological feasibility is established. The Company determines that technological feasibility is established by the completion of a detailed program design or, in its absence, completion of a working model. Once the software product is ready for general availability, the Company ceases capitalizing costs and begins amortizing the intangible asset on a straight-line basis over its estimated useful life. The weighted average estimated useful life of capitalized software is five years. Other intangible assets include those assets that arise from business combinations and that consist of developed technology, non-competition covenants, trademarks, contracts, and customer relationships that are amortized, on a straight-line basis, over six months to twelve years. Finite-lived intangible assets are required to be amortized over their useful lives and are evaluated for possible impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable.
Recovery of long-lived assets (excluding goodwill)	'
	Recovery of long-lived assets (excluding goodwill)
	The Company records long-lived assets, such as property and equipment, at cost. The carrying value of long-lived assets is reviewed for possible impairment whenever events or changes in circumstances suggest the carrying value of a long-lived asset may not be fully recoverable. The test for recoverability is made using an estimate of the undiscounted expected future cash flows and, if required, the impairment loss is measured as the amount that the carrying value of the asset exceeds the asset’s fair value if the asset is not recoverable. The Company considers expected cash flows and estimated future operating results, trends, and other available information in assessing whether the carrying value of assets is impaired. If it is determined that an asset’s carrying value is impaired, a write-down of the carrying value of the identified asset will be recorded as an operating expense on the consolidated statements of income in the period in which the determination is made.
Fair value of financial instruments	'
	Fair value of financial instruments
	The Company’s short-term financial instruments consist of cash and cash equivalents, membership fees receivable, accrued expenses, and accounts payable. The carrying value of the Company’s financial instruments as of March 31, 2013 and 2014 approximates their fair value due to their short-term nature. The Company’s marketable securities consisting of U.S. government-sponsored enterprise obligations and various state tax-exempt notes and bonds are classified as available-for-sale and are carried at fair market value based on quoted market prices. The Company’s financial instruments also include cost method investments in private entities. These investments are in preferred securities that are not marketable; therefore management has concluded that it is not practicable to estimate the fair value of these financial instruments.
Derivative instruments	'
	Derivative instruments
	The Company holds warrants to purchase common stock in an entity that meet the definition of a derivative. Derivative instruments are carried at fair value on the consolidated balance sheets. Gains or losses from changes in the fair value of the warrants are recognized on the consolidated statements of income in the period in which they occur.
Revenue recognition	'
	Revenue recognition
	Revenue is recognized when (1) there is persuasive evidence of an arrangement, (2) the fee is fixed or determinable, (3) services have been rendered and payment has been contractually earned, and (4) collectibility is reasonably assured. Fees are generally billable when a letter of agreement is signed by the member, and fees receivable during the subsequent twelve month period and related deferred revenue are recorded upon the commencement of the membership or collection of fees, if earlier. In many of the Company’s higher priced programs and membership agreements with terms that are greater than one year, fees may be billed on an installment basis.
	The Company’s membership agreements with its customers generally include more than one deliverable. Deliverables are determined based upon the availability and delivery method of the services and may include: best practices research; executive education curricula; cloud-based content, databases, and calculators; performance or benchmarking reports; diagnostic tools; interactive advisory support; and performance technology software. Access to such deliverables is generally available on an unlimited basis over the membership period. When an agreement contains multiple deliverables, the Company reviews the deliverables to determine if they qualify as separate units of accounting. In order for deliverables in a multiple-deliverable arrangement to be treated as separate units of accounting, the deliverables must have standalone value upon delivery, and delivery or performance of undelivered items in an arrangement with a general right of return must be probable. If the Company determines that there are separate units of accounting, arrangement consideration at the inception of the membership period is allocated to all deliverables based on the relative selling price method in accordance with the selling price hierarchy. Because of the unique nature of the Company’s products, neither vendor specific objective evidence nor third-party evidence is available. Therefore, the Company utilizes best estimate of selling price to allocate arrangement consideration in multiple element arrangements.
	The Company’s membership programs may contain certain deliverables that do not have standalone value and therefore are not accounted for separately. In general, the deliverables in membership programs are consistently available throughout the membership period, and, as a result, the consideration is recognized ratably over the membership period. When a service offering includes unlimited and limited service offerings, revenue is recognized over the appropriate service period, either ratably, if the service is consistently available, or, if the service is not consistently available, upon the earlier of the delivery of the service or the completion of the membership period, provided that all other criteria for recognition have been met.
	Certain membership programs incorporate hosted performance technology software. In many of these agreements, members are charged set-up fees in addition to subscription fees for access to the hosted cloud-based software and related membership services. Both set-up fees and subscription fees are recognized ratably over the term of the membership agreement, which is generally three years, and is consistent with the pattern of the delivery of services under these arrangements. Upon launch of a new program that incorporates software, all program revenue is deferred until the program is generally available for release to the Company’s membership, and then recognized ratably over the remainder of the contract term of each agreement.
	The Company also performs professional services sold under separate agreements that include management and consulting services. The Company recognizes professional services revenues on a time-and-materials basis as services are rendered.
Deferred incentive compensation and other charges	'
	Deferred incentive compensation and other charges
	Incentive compensation to employees related to the negotiation of new and renewal memberships, license fees to third-party vendors for tools, data, and software incorporated in specific memberships that include performance technology software, and other direct and incremental costs associated with specific memberships are deferred and amortized over the term of the related memberships.
Deferred Compensation Plan	'
	Deferred compensation plan
	Effective July 1, 2013, the Company implemented a Deferred Compensation Plan (the ''Plan’’) for certain employees to provide an opportunity to defer compensation on a pre-tax basis. The Plan provides for deferred amounts to be credited with investment returns based upon investment options selected by participants from alternatives designated from time to time by the plan administrative committee. Investment earnings associated with the Plan’s assets are included in other income, net while changes in individual participant account balances are recorded as compensation expense in the consolidated statements of income. The Plan also allows the Company to make discretionary contributions at any time based on individual or overall Company performance, which may be subject to a different vesting schedule than elective deferrals, and provides that the Company may make contributions in an amount equal to the amount of any 401(k) plan matching contribution that is not credited to the participant’s 401(k) account due to such employee's participation in the Plan. The Company did not make any discretionary contributions to the Plan in the fiscal year ended March 31, 2014. The income earned and expense incurred related to the Plan was immaterial for the fiscal year ended March 31, 2014.
Operating leases	'
	Operating leases
	The Company recognizes rent expense under operating leases on a straight-line basis over the non-cancelable term of the lease, including free-rent periods. Lease-incentives relating to allowances provided by landlords are amortized over the term of the lease as a reduction of rent expense. The Company recognizes sublease income on a straight-line basis over the term of the sublease, including free rent periods and escalations, as a reduction of rent expense. Costs associated with acquiring a subtenant, including broker commissions and tenant allowances, are amortized over the sublease term as a reduction of sublease income.
Stock-based compensation	'
	Stock-based compensation
	The Company has several stock-based compensation plans which are described more fully in Note 15, “Stock-based compensation.” These plans provide for the granting of stock options and restricted stock units (“RSUs”) to employees, non-employee members of the Company’s Board of Directors and any other service providers who have been retained to provide consulting, advisory or other services to the Company. Stock-based compensation cost is measured at the grant date of the stock-based awards based on their fair values, and is recognized as an expense in the consolidated statements of income over the vesting periods of the awards. The fair value of RSUs is determined as the fair market value of the underlying shares on the date of grant. The Company calculates the fair value of all stock option awards, with the exception of the stock options issued with market-based conditions, on the date of grant using the Black-Scholes model. The fair value of stock options issued with market-based conditions is calculated on the date of grant using a lattice option-pricing model. Forfeitures are estimated based on historical experience at the time of grant and adjusted, if necessary, in subsequent periods if actual forfeitures differ from those estimates. The Company bases its fair value estimates on assumptions it believes to be reasonable but that are inherently uncertain.
Other income, net	'
	Other income, net
	Other income, net for the fiscal year ended March 31, 2012 includes $2.4 million of interest income earned from the Company’s marketable securities, a $0.1 million gain on foreign exchange rates, and a $0.5 million gain on an investment in common stock warrants. Other income, net for the fiscal year ended March 31, 2013 includes $3.4 million of interest income earned from the Company’s marketable securities, a $0.5 million loss on foreign exchange rates, $0.3 million in credit facility fees, and a $0.1 million gain on an investment in common stock warrants. Other income, net for the fiscal year ended March 31, 2014 includes $3.3 million of interest income earned from the Company’s marketable securities, a $0.2 million loss on foreign exchange rates, $0.6 million in credit facility fees, and a $0.2 million realized gain on sale of marketable securities.
Income taxes	'
	Income taxes
	Deferred income taxes are determined using the asset and liability method. Under this method, temporary differences arise as a result of the difference between the reported amounts of assets and liabilities and their tax bases. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion or the entire deferred tax asset will not be realized. Deferred tax assets and liabilities are adjusted for the effects of changes in tax law and tax rates on the date of the enactment of the change.
Discontinued operations	'
	Discontinued operations
	The Company presents the assets and liabilities of programs which meet the criteria for discontinued operations separately in the consolidated balance sheets. In addition, the results of operations for those discontinued operations are presented as such in the Company’s consolidated statements of income. For periods prior to the program qualifying for discontinued operations, the Company reclassifies the results of operations to discontinued operations. In addition, the net gain or loss (including any impairment loss) on the disposal is presented as discontinued operations when recognized. The change in presentation for discontinued operations does not have any impact on the Company’s financial condition or results of operations. The Company combines the operating, investing, and financing portions of cash flows attributable to discontinued operations with the respective cash flows from continuing operations on the consolidated statements of cash flows.
Concentrations of risk	'
	Concentrations of risk
	Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of membership fees receivable, cash and cash equivalents, and marketable securities. The credit risk with respect to membership fees receivable is generally diversified due to the large number of entities comprising the Company’s membership base, and the Company establishes allowances for potential credit losses. No one member accounted for more than 1.5% of revenue for any period presented. The Company maintains cash and cash equivalents and marketable securities with financial institutions. Marketable securities consist of U.S. government-sponsored enterprise obligations and various state tax-exempt notes and bonds. The Company performs periodic evaluations of the relative credit ratings related to the cash, cash equivalents, and marketable securities.
	In the fiscal year ended March 31, 2012, 2013, and 2014, the Company generated approximately 3.5%, 4.0%, and 3.1%, of revenue, respectively, from members outside the United States. The Company’s limited international operations subject the Company to risks related to currency exchange fluctuations. Prices for the Company’s services sold to members located outside the United States are sometimes denominated in local currencies. Increases in the value of the U.S. dollar against local currencies in countries where the Company has members may result in a foreign exchange loss recognized by the Company.
Earnings per share	'
	Earnings per share
	Basic earnings per share is computed by dividing net income attributable to common stockholders by the number of weighted average common shares outstanding during the period. Diluted earnings per share is computed by dividing net income attributable to common stockholders by the number of weighted average common shares increased by the dilutive effects of potential common shares outstanding during the period. The number of potential common shares outstanding is determined in accordance with the treasury stock method, using the Company’s prevailing tax rates. Certain potential common share equivalents were not included in the computation because their effect was anti-dilutive.
	A reconciliation of basic to diluted weighted average common shares outstanding is as follows (in thousands):
		Year Ended March 31,
		2012	2013	2014
	Basic weighted average common shares outstanding	32,808	34,723	35,909
	Effect of dilutive outstanding stock-based awards	1,742	1,583	1,050
	Dilutive impact of earn-out liability	110	—	—
	Diluted weighted average common shares outstanding	34,660	36,306	36,959
	In the fiscal years ended March 31, 2012, 2013, and 2014, 78,000, 341,000, and 1.0 million shares, respectively, related to share-based compensation awards have been excluded from the calculation of the effect of dilutive outstanding stock-based awards shown above because their effect was anti-dilutive.
Recent accounting pronouncements	'
	Recent accounting pronouncements
	Changes to GAAP are established by the Financial Accounting Standards Board (“FASB”) in the form of accounting standards updates (“ASUs”) to the FASB’s Accounting Standards Codification. The Company considers the applicability and impact of all recent ASUs. ASUs not listed below were assessed and determined to be not applicable or are expected to have minimal impact on the Company’s consolidated financial position and results of operations.
	In July 2013, the FASB issued accounting guidance related to income taxes, which requires entities to present an unrecognized tax benefit, or a portion of an unrecognized tax benefit, as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward when settlement in this manner is available under the tax law. This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013, with early adoption permitted. The Company will adopt this guidance for its fiscal year beginning April 1, 2014. The Company does not expect the adoption of this guidance to have a material effect on its financial position or results of operations.

Summary_of_significant_account2

Summary of significant accounting policies (Tables)	12 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Schedule of Error Corrections and Prior Period Adjustments	'
	The following are the previously stated and corrected balances of the affected line items of the consolidated statements of operations, consolidated cash flows, and consolidated balance sheets presented in this Form 10-K for the periods or as of the date presented (in thousands):
		Year Ended March 31, 2013
		As reported				Adjustments			As adjusted
	Cost of services, excluding depreciation and amortization	$	240,037			$	(2,432	)	237,605
	Depreciation and amortization	19,885				423			20,308
	Operating income, net	43,466				2,009			45,475
	Income from continuing operations before provision for income taxes and equity in loss of unconsolidated entities	46,070				2,009			48,079
	Provision for income taxes	(17,259		)		(764		)	(18,023		)
	Net income before allocation to noncontrolling interest	22,055				1,245			23,300
	Net income attributable to common stockholders	22,163				1,245			23,408
	Earnings per share:
	Net income attributable to common stockholders per share - basic	$	0.64			0.03			$	0.67
	Net income attributable to common stockholders per share - diluted	$	0.61			0.03			$	0.64
	Comprehensive income	22,218				1,245			23,463
	Statement of cash flows:
	Net income before allocation to noncontrolling interest	22,055				1,245			23,300
	Depreciation and amortization	19,885				423			20,308
	Deferred income taxes	261				380			641
	Other long-term liabilities	(7,499		)		—			(7,499		)
	Net cash provided by operating activities	81,827				1,434			83,261
	Purchases of property and equipment	(35,545		)		(1,434		)	(36,979		)
	Net cash used in investing activities	(105,467		)		(1,434		)	(106,901		)
		Year Ended March 31, 2012
		As reported				Adjustments			As adjusted
	Cost of services, excluding depreciation and amortization	$	198,112			$	(175	)	$	197,937
	Depreciation and amortization	14,108				161			14,269
	Operating income, net	36,358				14			36,372
	Income from continuing operations before provision for income taxes and equity in loss of unconsolidated entities	39,392				14			39,406
	Provision for income taxes	(15,203		)		(4		)	(15,207		)
	Net income before allocation to noncontrolling interest	25,293				10			25,303
	Net income attributable to common stockholders	25,293				10			25,303
	Earnings per share:
	Net income attributable to common stockholders per share - basic	$	0.77			$	—		$	0.77
	Net income attributable to common stockholders per share - diluted	$	0.73			$	—		$	0.73
	Comprehensive income	26,619				10			26,629
	Statement of cash flows:
	Net income before allocation to noncontrolling interest	$	25,293			$	10		$	25,303
	Depreciation and amortization	14,656				161			14,817
	Deferred income taxes	(85		)		389			304
	Other long-term liabilities	5,950				1,000			6,950
	Net cash provided by operating activities	92,732				1,175			93,907
	Purchases of property and equipment	(29,194		)		(1,175		)	(30,369		)
	Net cash used in investing activities	(87,555		)		(1,175		)	(88,730		)
		As of March 31, 2013
		As reported				Adjustments			As adjusted
	Property and equipment, net	$	71,174			$	2,398		$	73,572
	Deferred income taxes, net of current portion	3,888				(895		)	2,993
	Total assets	896,430				1,503			897,933
	Accumulated deficit	(95,809		)		1,503			(94,306		)
	Total stockholders’ equity	281,317				1,503			282,820
	Total liabilities and stockholders’ equity	896,430				1,503			897,933
Reconciliation of Basic to Diluted Weighted Average Common Shares Outstanding	'
	A reconciliation of basic to diluted weighted average common shares outstanding is as follows (in thousands):
		Year Ended March 31,
		2012			2013			2014
	Basic weighted average common shares outstanding	32,808			34,723			35,909
	Effect of dilutive outstanding stock-based awards	1,742			1,583			1,050
	Dilutive impact of earn-out liability	110			—			—
	Diluted weighted average common shares outstanding	34,660			36,306			36,959

Discontinued_operations_Tables

Discontinued operations (Tables)	12 Months Ended
	Mar. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Components of Discontinued Operations Included in Consolidated Statements of Income	'
	The components of discontinued operations included in the consolidated statements of income consisted of the following (in thousands):
		Year Ended March 31,
		2012			2013		2014
	Revenue	$	4,985		$	—	$	—
	Costs and expenses:
	Cost of services	4,330			—		—
	Member relations and marketing	189			—		—
	Gain on disposal	3,510			—		—
	Income from discontinued operations before provision for income taxes	3,976			—		—
	Provision for income taxes	(1,535		)	—		—
	Net income from discontinued operations, net of provision for income taxes	$	2,441		$	—	$	—

Fair_value_measurements_Tables

Fair value measurements (Tables)	12 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements of Financial Assets and Liabilities on Recurring Basis	'
	The Company’s financial assets and liabilities subject to fair value measurements on a recurring basis and the necessary disclosures are as follows (in thousands):
		Fair value			Fair value measurement as of March 31, 2013
		as of March 31,			using fair value hierarchy
		2013			Level 1			Level 2		Level 3
	Financial assets
	Cash and cash equivalents (1)	$	57,829		$	57,829		$	—	$	—
	Available-for-sale marketable securities (2)	156,839			—			156,839		—
	Common stock warrants (3)	550			—			—		550
	Financial liabilities
	Contingent earn-out liabilities (4)	15,200			—			—		15,200
		Fair value			Fair value measurement as of March 31, 2014
		as of March 31,			using fair value hierarchy
		2014			Level 1			Level 2		Level 3
	Financial assets
	Cash and cash equivalents (1)	$	23,129		$	23,129		$	—	$	—
	Available-for-sale marketable securities (2)	164,396			—			164,396		—
	Common stock warrants (3)	550			—			—		550
	Financial liabilities
	Contingent earn-out liabilities (4)	8,750			—			—		8,750
	—————————————
	-1	Fair value is based on quoted market prices.
	-2	Fair value is determined using quoted market prices of the assets. For further detail, see Note 6, “Marketable securities.” The Company changed the classification of its marketable securities from Level 1 to Level 2 within the fair value hierarchy during the fiscal year ended March 31, 2014. The investments affected by this change are U.S. government-sponsored securities and tax exempt obligations of states that do not have observable prices in active markets. The Company concluded that these investments are more appropriately classified as Level 2 within the fair value hierarchy. The March 31, 2013 classification has been changed to conform to the revised presentation. The impact of this change is immaterial and has no effect on the previously reported consolidated statements of income, stockholders' equity, cash flows or balance sheets.
	-3	The fair value of the common stock warrants as of March 31, 2013 and 2014 was calculated to be $0.40 per share and $0.44 per share, respectively, using a Black-Scholes-Merton model. The significant assumptions as of March 31, 2013 were as follows: risk-free interest rate of 1.0%; expected term of 6.22 years; expected volatility of 39.38%; dividend yield of 0%; weighted average share price of $1.00 per share; and warrants expected to become exercisable of approximately 1,400,000 shares. The significant assumptions as of March 31, 2014 were as follows: risk-free interest rate of 1.7%; expected term of 5.22 years; expected volatility of 36.77%; dividend yield of 0%; weighted average share price of $1.12 per share; and a range of warrants expected to become exercisable of between 1,000,000 and 1,400,000 shares.
	-4	This fair value measurement is based on unobservable inputs that are supported by little or no market activity and reflect the Company’s own assumptions in measuring fair value using the income approach. In developing these estimates, the Company considered certain performance projections, historical results, and general macro-economic environment and industry trends.
Reconciliation of Change in Fair Value of Common Stock Warrants	'
	The following table represents a reconciliation of the change in the fair value of the common stock warrants for the fiscal years ended March 31, 2013 and 2014 (in thousands):
		As of March 31,
		2013			2014
	Beginning balance	$	450		$	550
	Fair value change in common stock warrants (1)	100			—
	Ending balance	$	550		$	550
	—————————————
	-1	Amounts were recognized in other income, net on the consolidated statements of income.
Reconciliation of Change in Contingent Earn-out Liabilities	'
	The following table represents a reconciliation of the change in the contingent earn-out liabilities for the fiscal years ended March 31, 2013 and 2014 (in thousands):
		As of March 31,
		2013			2014
	Beginning balance	$	21,200		$	15,200
	Fair value change in Southwind contingent earn-out liability (1)	5,600			(3,350		)
	Fair value change in Cielo contingent earn-out liability (1)	400			—
	Fair value change in 360 Fresh contingent earn-out liability (1)	—			100
	Fair value change in PivotHealth contingent earn-out liability (1)	(2,200		)	(1,000		)
	Southwind earn-out payment	(10,600		)	(2,200		)
	Cielo earn-out payment	(1,700		)	—
	Addition of 360Fresh contingent earn-out liability	2,500			—
	Ending balance	$	15,200		$	8,750
	—————————————
	-1	Amounts were recognized in cost of services on the consolidated statements of income.

Marketable_securities_Tables

Marketable securities (Tables)	12 Months Ended
	Mar. 31, 2014
Investments, Debt and Equity Securities [Abstract]	'
Aggregate Value, Amortized Cost, Gross Unrealized Gains, and Gross Unrealized Losses on Available-for-Sale Marketable Securities	'
	The aggregate value, amortized cost, gross unrealized gains, and gross unrealized losses on available-for-sale marketable securities are as follows (in thousands):
		As of March 31, 2014
		Fair		Amortized		Gross		Gross
		value		cost		unrealized		unrealized
						gains		losses
	U.S. government-sponsored enterprises	$	29,291	$	30,344	$	—	$	1,053
	Tax exempt obligations of states	135,105		136,653		1,060		2,608
		$	164,396	$	166,997	$	1,060	$	3,661
		As of March 31, 2013
		Fair		Amortized		Gross		Gross
		value		cost		unrealized		unrealized
						gains		losses
	U.S. government-sponsored enterprises	$	25,430	$	25,347	$	83	$	—
	Tax exempt obligations of states	131,409		129,550		2,715		856
		$	156,839	$	154,897	$	2,798	$	856
Marketable Securities Maturities	'
	The following table summarizes marketable securities maturities (in thousands):
		As of March 31, 2014
		Fair market		Amortized
		value		cost
	Matures in less than 1 year	$	2,426	$	2,404
	Matures after 1 year through 5 years	44,867		44,536
	Matures after 5 years through 10 years	87,956		89,436
	Matures after 10 years through 20 years	29,147		30,621
		$	164,396	$	166,997
Gross Unrealized Losses and Fair Value of Company's Investments	'
	The following tables show the gross unrealized losses and fair value of the Company’s investments as of March 31, 2014 with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands):
		Less than 12 months				12 months or more				Total
		Fair		Gross		Fair		Gross		Fair		Gross
		value		unrealized		value		unrealized		value		unrealized
				losses				losses				losses
	U.S. government-sponsored enterprises	$	26,828	$	1,016	$	2,463	$	37	$	29,291	$	1,053
	Tax exempt obligations of states	53,617		841		42,865		1,767		96,482		2,608
		$	80,445	$	1,857	$	45,328	$	1,804	$	125,773	$	3,661

Membership_fees_receivable_Tab

Membership fees receivable (Tables)	12 Months Ended
	Mar. 31, 2014
Receivables [Abstract]	'
Membership Fees Receivable	'
	Membership fees receivable consist of the following (in thousands):
		As of March 31,
		2013			2014
	Billed fees receivable	$	76,594		$	87,476
	Unbilled fees receivable	299,493			367,271
	Membership fees receivable, gross	376,087			454,747
	Allowance for uncollectible revenue	(5,766		)	(6,850		)
	Membership fees receivable, net	$	370,321		$	447,897

Property_and_equipment_Tables

Property and equipment (Tables)	12 Months Ended
	Mar. 31, 2014
Property, Plant and Equipment [Abstract]	'
Schedule of Property and Equipment	'
	Property and equipment consists of the following (in thousands):
		As of March 31,
		2013			2014
	Leasehold improvements	$	29,953		$	39,425
	Furniture, fixtures and equipment	36,502			43,112
	Software	65,589			100,808
	Property and equipment, gross	132,044			183,345
	Accumulated depreciation and amortization	(58,472		)	(80,888		)
	Property and equipment, net	$	73,572		$	102,457

Goodwill_and_intangibles_Table

Goodwill and intangibles (Tables)	12 Months Ended
	Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Changes in Carrying Amount of Goodwill	'
	Changes in the carrying amount of goodwill are as follows (in thousands):
		As of March 31,
		2013				2014
	Beginning of year	$	74,235			$	95,540
	Goodwill acquired	21,305				33,884
	Ending balance	$	95,540			$	129,424
Gross and Net Carrying Balances and Accumulated Amortization of Intangibles	'
	The gross and net carrying balances and accumulated amortization of intangibles are as follows (in thousands):
				As of March 31, 2013									As of March 31, 2014
		Weighted		Gross				Accumulated			Net		Gross		Accumulated			Net
		average		carrying				amortization			carrying		carrying		amortization			carrying
		useful life		amount							amount		amount					amount
	Intangibles
	Internally developed intangible for sale:
	Capitalized software	5		$	6,438			$	(1,018	)	$	5,420	$	11,508	$	(2,266	)	$	9,242
	Acquired intangibles:
	Developed software	6.1		19,250				(4,659		)	14,591		19,250		(7,875		)	11,375
	Customer relationships	8.1		12,700				(4,735		)	7,965		15,910		(6,800		)	9,110
	Trademarks	6.2		4,200				(2,118		)	2,082		4,200		(2,680		)	1,520
	Non-compete agreements	4.3		1,400				(633		)	767		1,400		(900		)	500
	Customer contracts	4.7		5,199				(3,643		)	1,556		6,299		(4,291		)	2,008
	Total other intangibles			$	49,187			$	(16,806	)	$	32,381	$	58,567	$	(24,812	)	$	33,755

Investment_in_and_Advances_to_

Investment in and Advances to Unconsolidated Entities (Tables)	12 Months Ended
	Mar. 31, 2014
Evolent LLC	'
Summary of Financial Position of Evolent LLC	'
	The following is a summary of the financial position of Evolent LLC, as of the dates presented (unaudited, in thousands):
		As of
		31-Mar-14
	Assets:
	Current assets	$	78,692
	Non-current assets	20,151
	Total assets	$	98,843
	Liabilities and Members’ Equity:
	Current liabilities	$	35,453
	Non-current liabilities	3,173
	Total liabilities	38,626
	Redeemable equity	78,360
	Members’ equity	(18,143		)
	Total liabilities and members’ equity	$	98,843
Summary of Operating Results of Evolent LLC	'
	The following is a summary of the operating results of Evolent LLC for the periods presented (unaudited, in thousands):
		Year Ended March 31,
		2012			2013			2014
	Revenue	$	—		$	—		$	35,788
	Operating expenses	—			—			(54,497		)
	Depreciation and amortization	—			—			(1,381		)
	Interest, net	—			—			16
	Taxes	—			—			—
	Net loss	$	—		$	—		$	(20,074	)
Evolent Health Holdings Inc	'
Summary of Financial Position of Evolent Health Holdings Inc	'
	The following is a summary of the financial position of Holdings (or its predecessor) as of the dates presented (unaudited, in thousands):
		As of
		31-Mar-13			31-Mar-14
	Assets:
	Current assets	$	9,842		$	—
	Non-current assets	10,571			48,172
	Total assets	$	20,413		$	48,172
	Liabilities and Members’ Equity:
	Current liabilities	$	11,716		$	—
	Non-current liabilities	10,116			—
	Total liabilities	21,832			—
	Redeemable shares	—			38,680
	Members’ equity	(1,419		)	9,492
	Total liabilities and members’ equity	$	20,413		$	48,172
Summary of Operating Results of Evolent Health Holdings Inc	'
	The following is a summary of the operating results of Holdings (or its predecessor) for the periods presented (unaudited, in thousands):
		Year Ended March 31,
		2012			2013			2014
	Revenue	$	1,480		$	13,082		$	25,671
	Operating expenses	(4,445		)	(36,183		)	(45,617		)
	Depreciation and amortization	(9		)	(1,038		)	(1,208		)
	Interest, net	7			(149		)	(820		)
	Taxes	—			333			(8		)
	Gain from deconsolidation	—			—			46,246
	Income/loss from investments	—			—			(7,141		)
	Net loss	$	(2,967	)	$	(23,955	)	$	17,123

Stockbased_compensation_Tables

Stock-based compensation (Tables)	12 Months Ended
	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Summary of Changes in Common Stock Options	'
	The following table summarizes the changes in common stock options during the fiscal years ended March 31, 2012, 2013, and 2014 for all of the stock incentive plans described above.
		Year Ended March 31,
		2012							2013					2014
		Number of			Weighted				Number of			Weighted		Number of		Weighted
		Options			Average				Options			Average		Options		Average
					Exercise							Exercise				Exercise
					Price							Price				Price
	Outstanding, beginning of year	5,059,198			$	16.4			3,812,228			$	17.05	2,692,353		$	21.06
	Granted	601,412			24.98				361,844			44		536,958		51.71
	Exercised	(1,775,510	)		17.48				(1,477,219	)		16.35		(1,327,358	)	16.6
	Forfeited	(72,872	)		20.33				(4,500	)		9.26		(71,630	)	32.93
	Outstanding, end of year	3,812,228			$	17.05			2,692,353			$	21.06	1,830,323		$	32.82	-1
	Exercisable, end of year													680,978		$	19.57	-2
	—————————————
	-1	The weighted average remaining contractual term for the fiscal year ended March 31, 2014 is approximately three years and the aggregate intrinsic value is $57.7 million.
	-2	The weighted average remaining contractual term for the fiscal year ended March 31, 2014 is approximately two years and the aggregate intrinsic value is $30.4 million.
Summary of Exercise Prices and Contractual Lives of Options Outstanding under Stock Incentive Plans	'
	The following table summarizes the exercise prices and contractual lives of all options outstanding under the stock incentive plans described above as of March 31, 2014:
		Options Outstanding and Exercisable
	Range of Exercise Prices	Shares			Weighted				Weighted
					Average				Average
					Exercise				Remaining
					Price				Contractual
									Life - Years
	$  0.00 – $   9.99	219,906			$	9.26			2.1
	10.00 –    19.99	284,332			16.85				2
	20.00 –    29.99	471,791			24.62				2.9
	30.00 –    39.99	5,000			34.06				2.7
	40.00 –    49.99	730,776			46.15				4.3
	50.00 –    59.99	11,253			57.88				6.4
	60.00 –    69.99	107,265			66.06				6.9
	$  0.00 – $ 69.99	1,830,323			$	32.82			3.5
Summary of Changes in RSUs	'
	The following table summarizes the changes in RSUs during the fiscal years ended March 31, 2012, 2013, and 2014 for all of the stock incentive plans described above.
		Year Ended March 31,
		2012							2013					2014
		Number of			Weighted				Number of			Weighted		Number of		Weighted
		RSUs			Average				RSUs			Average		RSUs		Average
					Grant							Grant				Grant
					Date							Date				Date
					Fair							Fair				Fair
					Value							Value				Value
	Non-vested, beginning of year	664,218			$	17.34			896,640			$	20.77	943,206		$	29.5
	Granted	464,700			$	24.81			342,240			$	44.39	550,384		$	53.64
	Forfeited	(6,110	)		$	23.53			(3,654	)		$	19.98	(36,818	)	$	39.88
	Vested	(226,168	)		$	18.92			(292,020	)		$	20.26	(346,310	)	$	26.53
	Non-vested, end of year	896,640			$	20.77			943,206			$	29.5	1,110,462		$	42.05
Valuation of Stock Options	'
	The following average key assumptions were used in the valuation of stock options granted in each respective period:
		Year Ended March 31,
		2012			2013			2014
	Stock option grants:
	Risk-free interest rate	0.66% – 2.22%			0.43% – 1.15%			0.34% – 1.71%
	Expected lives in years	3.00 – 5.25			3.25 – 5.50			3.25 – 5.50
	Expected volatility	36.7% – 41.6%			33.2% – 40.7%			30.4% – 38.0%
	Dividend yield	—	%		—	%		—	%
	Weighted average exercise price of options granted	24.98			44			51.71
	Weighted average grant date fair value of options granted	8.24			13.33			14.77
	Number of options granted	601,412			361,844			536,958
Summary of Stock-based Compensation Expense	'
	The Company recognized stock-based compensation expense in the following consolidated statements of income line items for stock options and RSUs and for shares issued under the Company’s ESPP, for the fiscal years ended March 31, 2012, 2013, and 2014 (in thousands, except per share amounts):
		Year Ended March 31,
		2012				2013				2014
	Stock-based compensation expense included in:
	Costs and expenses:
	Cost of services	$	3,440			$	3,975			$	5,527
	Member relations and marketing	2,133				2,643				3,688
	General and administrative	6,413				7,295				9,002
	Depreciation and amortization	—				—				—
	Total costs and expenses	11,986				13,913				18,217
	Operating income	(11,986		)		(13,913		)		(18,217		)
	Net income attributable to common stockholders	$	(7,359	)		$	(8,686	)		$	(11,204	)
	Impact on diluted earnings per share	$	(0.21	)		$	(0.24	)		$	(0.30	)
Summary of Stock-based Compensation Expense by Award	'
	Stock-based compensation expense by award type is shown below (in thousands):
		Year Ended March 31,
		2012				2013				2014
	Stock-based compensation expense by award type:
	Stock options	$	5,072			$	5,000			$	4,846
	Restricted stock units	6,914				8,913				13,371
	Employee stock purchase rights	—				—				—
	Total stock-based compensation	$	11,986			$	13,913			$	18,217

Income_taxes_Tables

Income taxes (Tables)	12 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Summary of Provision for Income Taxes	'
	The provision for income taxes consists of the following (in thousands):
		Year Ended March 31,
		2012				2013				2014
	Current	$	14,903			$	17,382			$	11,413
	Deferred	304				641				7,795
	Provision for income taxes	$	15,207			$	18,023			$	19,208
Statutory Rates to Income before Provision for Income Taxes	'
	The provision for income taxes differs from the amount of income taxes determined by applying the applicable income tax statutory rates to income before provision for income taxes as follows:
		Year Ended March 31,
		2012			2013			2014
	Statutory U.S. federal income tax rate	35	%		35	%		35	%
	State income tax, net of U.S. federal income tax benefit	5.5	%		5.9	%		6	%
	Tax-exempt interest income	(1.5	)%		(2.0	)%		(1.7	)%
	Washington, D.C. QHTC income tax credits	(3.1	)%		(5.4	)%		(4.0	)%
	Other permanent differences, net	2.7	%		4	%		3.2	%
	Effective tax rate on continuing operations	38.6	%		37.5	%		38.5	%
Tax Effect of Differences between Tax Bases of Assets and Liabilities	'
	The tax effect of these temporary differences is presented below (in thousands):
		As of March 31,
		2013				2014
	Deferred income tax assets (liabilities):
	Tax credit carryforwards	$	10,848			$	11,199
	Deferred compensation accrued for financial reporting purposes	8,592				11,692
	Stock-based compensation	8,548				8,942
	Acquired net operating loss carryforwards	3,279				5,444
	Reserve for uncollectible revenue	2,355				2,812
	Book/tax basis difference in investment in unconsolidated entities	—				1,677
	Unrealized losses on available-for-sale securities	—				1,270
	Acquired intangibles and goodwill	195				—
	Other	778				1,628
	Total deferred tax assets	34,595				44,664
	Valuation allowance	—				(1,677		)
	Total deferred tax assets, net of valuation allowance	34,595				42,987
	Capitalized software development costs	(14,648		)		(22,659		)
	Deferred incentive compensation and other deferred charges	(5,968		)		(9,234		)
	Acquired intangibles and goodwill	—				(5,097		)
	Unrealized gains on available-for-sale securities	(680		)		—
	Depreciation	(2,417		)		(1,616		)
	Other	(225		)		(426		)
	Total deferred tax liabilities	(23,938		)		(39,032		)
	Net deferred income tax assets	$	10,657			$	3,955

Commitments_and_contingencies_

Commitments and contingencies (Tables)	12 Months Ended
	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Future Minimum Lease Payments	'
	The following table details the future minimum lease payments under the Company’s current leases, excluding rental escalation and executory costs (in thousands):
	Year Ending March 31,
	2015	13,563
	2016	13,200
	2017	13,054
	2018	10,733
	2019	10,382
	Thereafter	6,112
	Total	$	67,044

Segments_and_geographic_areas_

Segments and geographic areas (Tables)	12 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Revenue Information	'
	Substantially all of the Company’s identifiable assets are located in the United States. The following table sets forth revenue information for each geographic area for the fiscal years ended March 31, 2012, 2013, and 2014 (in thousands):
		Year Ended March 31,
		2012		2013		2014
	United States	$	357,937	$	434,640	$	504,211
	Other countries	12,408		16,197		16,385
	Total revenue	$	370,345	$	450,837	$	520,596

Quarterly_financial_data_Table

Quarterly financial data (Tables)	12 Months Ended
	Mar. 31, 2014
Quarterly Financial Information Disclosure [Abstract]	'
Summarized Financial Data	'
	Unaudited summarized financial data by quarter for the fiscal years ended March 31, 2013 and 2014 are as follows (in thousands, except per share amounts):
		Fiscal 2013 Quarter Ended
		June 30,		September 30,		December 31,		March 31,
	Revenue	$	104,142	$	110,758	$	116,231	$	119,706
	Operating income	$	10,365	$	12,490	$	9,736	$	12,884
	Income from continuing operations before provision for income taxes and equity in loss of unconsolidated entities	$	10,941	$	13,178	$	10,474	$	13,486
	Net income attributable to common stockholders	$	4,627	$	7,647	$	4,592	$	6,542
	Earnings per share:
	Basic	0.14		0.22		0.13		0.19
	Diluted	0.13		0.21		0.13		0.18
		Fiscal 2014 Quarter Ended
		June 30,		September 30,		December 31,		March 31,
	Revenue	$	123,216	$	128,341	$	131,038	$	138,001
	Operating income	$	10,738	$	11,390	$	7,875	$	17,183
	Income from continuing operations before provision for income taxes and equity in loss of unconsolidated entities	$	11,261	$	12,481	$	8,235	$	17,915
	Net income attributed to common stockholders	$	3,692	$	9,002	$	3,771	$	8,287
	Earnings per share:
	Basic	0.1		0.25		0.1		0.23
	Diluted	0.1		0.24		0.1		0.22

Summary_of_significant_account3

Summary of significant accounting policies - Additional Information (Detail) (USD $)

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2013

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2013

Mar. 31, 2014

Jun. 18, 2012

1-May-12

Mar. 31, 2014

Minimum

Maximum

Stock Compensation Plan

Stock Compensation Plan

Stock Compensation Plan

Software development

Software development

Software development

Software and Software Development Costs

Software and Software Development Costs

Software and Software Development Costs

Furniture, fixtures and equipment

Furniture, fixtures and equipment

Timing of Prior Period Acquisition-Related Earn-Out Fair Value Adjustment

Immaterial Error

Restatement Adjustment

Restatement Adjustment

Scenario, Previously Reported

Scenario, Previously Reported

Scenario, Previously Reported

Software, Intangible Asset

Common Stock

Common Stock

Credit Concentration Risk

Minimum

Maximum

Immaterial Error

Immaterial Error

Immaterial Error

Revenue

Significant Accounting Policies [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stockholders' equity, stock split conversion ratio

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

2

'

Quantifying misstatement in current year financial statements, amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1,000,000

'

'

'

'

'

'

'

'

'

'

Quantifying misstatement in current year in balance sheet, increase in membership fees receivable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

18,700,000

'

'

'

'

'

'

'

'

'

Quantifying misstatement in current year in balance sheet, increase in deferred revenue, current

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11,800,000

'

'

'

'

'

'

'

'

'

Quantifying misstatement in current year in balance sheet, increase in deferred revenue, noncurrent

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,900,000

'

'

'

'

'

'

'

'

'

Membership fees receivable

63,077,000

87,672,000

103,667,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

19,300,000

-500,000

'

104,200,000

68,400,000

'

'

'

'

Deferred revenues

72,137,000

110,099,000

131,743,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

19,300,000

-500,000

90,800,000

132,300,000

'

'

'

'

'

Marketable securities, cash equivalents

'three months or less

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Marketable securities, Investments

'more than three months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current marketable securities

'within twelve months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated useful lives of Property and equipment

'

'

'

'

'

'

'

'

'5 years

'

'

'6 years

'

'

'3 years

'7 years

'

'

'

'

'

'

'

'

'

'

'

Amortization expense for intangible assets

8,000,000

5,800,000

5,100,000

'

'

'

'

'

9,200,000

4,800,000

3,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Depreciation and amortization

11,500,000

8,400,000

5,200,000

'

'

'

'

'

'

'

'

1,700,000

900,000

900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated useful lives of intangible assets

'4 years 2 months

'

'

'6 months

'12 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

Revenue recognition period

'greater than one year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Membership program agreement term

'3 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest income earned from marketable securities

3,300,000

3,400,000

2,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (Loss) on foreign exchange rate

-200,000

-500,000

100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Credit facility fees

600,000

300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain on investment in common stock warrants

0

100,000

450,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Marketable securities, gain (loss)

$200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Concentration risk percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.50%

Percentage of revenue accounted for period presented

'no one member accounted for more than 1.5%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of revenue generated from foreign country

3.10%

4.00%

3.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share-based compensation awards

'

'

'

'

'

1,000,000

341,000

78,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Summary_of_significant_account4

Summary of significant accounting policies Software cost capitalization errors (Details) (USD $)

3 Months Ended

12 Months Ended

In Thousands, except Per Share data, unless otherwise specified

Mar. 31, 2014

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2011

Cost of services, excluding depreciation and amortization

'

'

'

'

'

'

'

'

$272,523

$237,605

$197,937

'

Depreciation and amortization

'

'

'

'

'

'

'

'

30,420

20,308

14,269

'

Operating income, net

17,183

7,875

11,390

10,738

12,884

9,736

12,490

10,365

47,186

45,475

36,372

'

Income from continuing operations before provision for income taxes and equity in loss of unconsolidated entities

17,915

8,235

12,481

11,261

13,486

10,474

13,178

10,941

49,892

48,079

39,406

'

Provision for income taxes

'

'

'

'

'

'

'

'

-19,208

-18,023

-15,207

'

Net income before allocation to noncontrolling interest

'

'

'

'

'

'

'

'

24,633

23,300

25,303

'

Net income before allocation to noncontrolling interest

'

'

'

'

'

'

'

'

24,633

23,300

25,303

'

Net income attributable to common stockholders

8,287

3,771

9,002

3,692

6,542

4,592

7,647

4,627

24,752

23,408

25,303

'

Net income attributable to common stockholders per share - basic

$0.23

$0.10

$0.25

$0.10

$0.19

$0.13

$0.22

$0.14

$0.69

$0.67

$0.77

'

Net income from continuing operations attributable to common stockholders (dollars per share)

'

'

'

'

'

'

'

'

$0.69

$0.67

$0.70

'

Net income attributable to common stockholders per share - diluted

$0.22

$0.10

$0.24

$0.10

$0.18

$0.13

$0.21

$0.13

$0.67

$0.64

$0.73

'

Comprehensive income

'

'

'

'

'

'

'

'

21,950

23,463

26,629

'

Depreciation and amortization

'

'

'

'

'

'

'

'

30,420

20,308

14,817

'

Deferred income taxes

'

'

'

'

'

'

'

'

7,795

641

304

'

Other long-term liabilities

'

'

'

'

'

'

'

'

-6,891

-7,499

6,950

'

Net cash provided by operating activities

'

'

'

'

'

'

'

'

76,702

83,261

93,907

'

Purchases of property and equipment

'

'

'

'

'

'

'

'

-44,058

-36,979

-30,369

'

Net cash used in investing activities

'

'

'

'

'

'

'

'

-125,578

-106,901

-88,730

'

Property and equipment, net

102,457

'

'

'

73,572

'

'

'

102,457

73,572

'

'

Deferred income taxes, net of current portion

'

'

'

'

2,993

'

'

'

'

2,993

'

'

Total assets

1,041,335

'

'

'

897,933

'

'

'

1,041,335

897,933

'

'

Accumulated deficit

-91,468

'

'

'

-94,306

'

'

'

-91,468

-94,306

'

'

Total stockholders’ equity

337,059

'

'

'

282,820

'

'

'

337,059

282,820

217,305

148,840

Total liabilities and stockholders’ equity

1,041,335

'

'

'

897,933

'

'

'

1,041,335

897,933

'

'

Scenario, Previously Reported

'

'

'

'

'

'

'

'

'

'

'

'

Cost of services, excluding depreciation and amortization

'

'

'

'

'

'

'

'

'

240,037

198,112

'

Depreciation and amortization

'

'

'

'

'

'

'

'

'

19,885

14,108

'

Operating income, net

'

'

'

'

'

'

'

'

'

43,466

36,358

'

Income from continuing operations before provision for income taxes and equity in loss of unconsolidated entities

'

'

'

'

'

'

'

'

'

46,070

39,392

'

Provision for income taxes

'

'

'

'

'

'

'

'

'

-17,259

-15,203

'

Net income before allocation to noncontrolling interest

'

'

'

'

'

'

'

'

'

22,055

25,293

'

Net income attributable to common stockholders

'

'

'

'

'

'

'

'

'

22,163

25,293

'

Net income attributable to common stockholders per share - basic

'

'

'

'

'

'

'

'

'

$0.64

$0.77

'

Net income attributable to common stockholders per share - diluted

'

'

'

'

'

'

'

'

'

$0.61

$0.73

'

Comprehensive income

'

'

'

'

'

'

'

'

'

22,218

26,619

'

Depreciation and amortization

'

'

'

'

'

'

'

'

'

19,885

14,656

'

Deferred income taxes

'

'

'

'

'

'

'

'

'

261

-85

'

Other long-term liabilities

'

'

'

'

'

'

'

'

'

-7,499

5,950

'

Net cash provided by operating activities

'

'

'

'

'

'

'

'

'

81,827

92,732

'

Purchases of property and equipment

'

'

'

'

'

'

'

'

'

-35,545

-29,194

'

Net cash used in investing activities

'

'

'

'

'

'

'

'

'

-105,467

-87,555

'

Property and equipment, net

'

'

'

'

71,174

'

'

'

'

71,174

'

'

Deferred income taxes, net of current portion

'

'

'

'

3,888

'

'

'

'

3,888

'

'

Total assets

'

'

'

'

896,430

'

'

'

'

896,430

'

'

Accumulated deficit

'

'

'

'

-95,809

'

'

'

'

-95,809

'

'

Total stockholders’ equity

'

'

'

'

281,317

'

'

'

'

281,317

'

'

Total liabilities and stockholders’ equity

'

'

'

'

896,430

'

'

'

'

896,430

'

'

Restatement Adjustment

'

'

'

'

'

'

'

'

'

'

'

'

Cost of services, excluding depreciation and amortization

'

'

'

'

'

'

'

'

'

-2,432

-175

'

Depreciation and amortization

'

'

'

'

'

'

'

'

'

423

161

'

Operating income, net

'

'

'

'

'

'

'

'

'

2,009

14

'

Income from continuing operations before provision for income taxes and equity in loss of unconsolidated entities

'

'

'

'

'

'

'

'

'

2,009

14

'

Provision for income taxes

'

'

'

'

'

'

'

'

'

-764

-4

'

Net income before allocation to noncontrolling interest

'

'

'

'

'

'

'

'

'

1,245

10

'

Net income attributable to common stockholders

'

'

'

'

'

'

'

'

'

1,245

10

'

Net income attributable to common stockholders per share - basic

'

'

'

'

'

'

'

'

'

$0.03

$0

'

Net income attributable to common stockholders per share - diluted

'

'

'

'

'

'

'

'

'

$0.03

$0

'

Comprehensive income

'

'

'

'

'

'

'

'

'

1,245

10

'

Depreciation and amortization

'

'

'

'

'

'

'

'

'

423

161

'

Deferred income taxes

'

'

'

'

'

'

'

'

'

380

389

'

Other long-term liabilities

'

'

'

'

'

'

'

'

'

0

1,000

'

Net cash provided by operating activities

'

'

'

'

'

'

'

'

'

1,434

1,175

'

Purchases of property and equipment

'

'

'

'

'

'

'

'

'

-1,434

-1,175

'

Net cash used in investing activities

'

'

'

'

'

'

'

'

'

-1,434

-1,175

'

Property and equipment, net

'

'

'

'

2,398

'

'

'

'

2,398

'

'

Deferred income taxes, net of current portion

'

'

'

'

-895

'

'

'

'

-895

'

'

Total assets

'

'

'

'

1,503

'

'

'

'

1,503

'

'

Accumulated deficit

'

'

'

'

1,503

'

'

'

'

1,503

'

'

Total stockholders’ equity

'

'

'

'

1,503

'

'

'

'

1,503

'

'

Total liabilities and stockholders’ equity

'

'

'

'

$1,503

'

'

'

'

$1,503

'

'

Summary_of_significant_account5

Summary of significant accounting policies - Reconciliation of Basic to Diluted Weighted Average Common Shares Outstanding (Detail)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Accounting Policies [Abstract]	'	'	'
Basic weighted average common shares outstanding	35,909	34,723	32,808
Effect of dilutive outstanding stock-based awards	1,050	1,583	1,742
Dilutive impact of earn-out liability	0	0	110
Diluted weighted average common shares outstanding	36,959	36,306	34,660

Acquisitions_Care_team_Connect

Acquisitions Care team Connect, Inc. (Details) (USD $)

12 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Oct. 07, 2013

Mar. 31, 2014

Oct. 07, 2013

Mar. 31, 2014

Oct. 07, 2013

Mar. 31, 2014

Oct. 07, 2013

Mar. 31, 2014

Oct. 07, 2013

Mar. 31, 2014

Oct. 07, 2013

Care Team Connect Inc.

Care Team Connect Inc.

Developed Technology Rights

Customer Relationships

Customer Relationships

Customer Contracts

Customer Contracts

Minimum

Minimum

Maximum

Maximum

Care Team Connect Inc.

Care Team Connect Inc.

Care Team Connect Inc.

Care Team Connect Inc.

Care Team Connect Inc.

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total purchase price

$46,036,000

$31,887,000

$12,829,000

$34,600,000

'

'

'

'

'

'

'

'

'

'

Accounts receivable

'

'

'

13,800,000

'

'

'

'

'

'

'

'

'

'

Fixed Assets

'

'

'

200,000

'

'

'

'

'

'

'

'

'

'

Liabilities assumed

'

'

'

13,500,000

'

'

'

'

'

'

'

'

'

'

Acquired deferred revenue

'

'

'

4,200,000

'

'

'

'

'

'

'

'

'

'

Acquired noncurrent deferred revenue

'

'

'

7,700,000

'

'

'

'

'

'

'

'

'

'

Accounts Payable

'

'

'

900,000

'

'

'

'

'

'

'

'

'

'

Deferred tax liabilities

'

'

'

700,000

'

'

'

'

'

'

'

'

'

'

Intangible assets

'

'

'

9,300,000

'

5,400,000

'

2,800,000

'

1,100,000

'

'

'

'

Estimated useful lives of intangible assets

'4 years 2 months

'

'

'

'

'

'8 years 1 month 6 days

'

'4 years 8 months 12 days

'

'6 months

'3 years

'12 years

'12 years

Weighted average useful life

'5 years 7 months

'

'

'8 years 2 months 12 days

'

'

'

'

'

'

'

'

'

'

Goodwill

129,424,000

95,540,000

74,235,000

24,800,000

'

'

'

'

'

'

'

'

'

'

Acquisition related costs

'

'

'

'

$300,000

'

'

'

'

'

'

'

'

'

Acquisitions_Medical_Referral_

Acquisitions Medical Referral Source, Inc. (Details) (USD $)	12 Months Ended			0 Months Ended	12 Months Ended			12 Months Ended	0 Months Ended	12 Months Ended	0 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Jul. 08, 2013	Mar. 31, 2014	Jul. 08, 2013	Jul. 08, 2013	Mar. 31, 2014	Jul. 08, 2013	Mar. 31, 2014	Jul. 08, 2013
				Medical Referral Source Inc	Medical Referral Source Inc	Developed Technology Rights	Customer Relationship and Employee Related Intangibles	Minimum	Minimum	Maximum	Maximum
						Medical Referral Source Inc	Medical Referral Source Inc		Medical Referral Source Inc		Medical Referral Source Inc
Business Acquisition [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total purchase price	$46,036,000	$31,887,000	$12,829,000	$11,500,000	'	'	'	'	'	'	'
Accounts receivable	'	'	'	700,000	'	'	'	'	'	'	'
Deferred tax liabilities	'	'	'	200,000	'	'	'	'	'	'	'
Liabilities assumed	'	'	'	400,000	'	'	'	'	'	'	'
Acquired noncurrent deferred revenue	'	'	'	300,000	'	'	'	'	'	'	'
Accounts Payable	'	'	'	100,000	'	'	'	'	'	'	'
Intangible assets	'	'	'	2,100,000	'	1,700,000	400,000	'	'	'	'
Estimated useful lives of intangible assets	'4 years 2 months	'	'	'	'	'	'	'6 months	'3 years	'12 years	'8 years
Weighted average useful life	'5 years 7 months	'	'	'4 years	'	'	'	'	'	'	'
Goodwill	129,424,000	95,540,000	74,235,000	8,900,000	'	'	'	'	'	'	'
Acquisition related costs	'	'	'	'	$100,000	'	'	'	'	'	'

Acquisitions_360Fresh_Inc_Deta

Acquisitions 360Fresh, Inc. (Details) (USD $)	12 Months Ended			0 Months Ended	12 Months Ended		0 Months Ended	12 Months Ended	0 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Nov. 15, 2012	Mar. 31, 2014	Mar. 31, 2014	Nov. 15, 2012	Mar. 31, 2014	Nov. 15, 2012	Nov. 15, 2012	Nov. 15, 2012
				360 Fresh	360 Fresh	Maximum	Maximum	Minimum	Minimum	Developed Technology Rights	Employee Related Intangibles
							360 Fresh		360 Fresh	360 Fresh	360 Fresh
Business Acquisition [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total purchase price	$46,036,000	$31,887,000	$12,829,000	$19,500,000	'	'	'	'	'	'	'
Initial payment in cash	'	'	'	17,000,000	'	'	'	'	'	'	'
Contingent earn-out liabilities	'	'	'	2,500,000	2,600,000	'	8,000,000	'	0	'	'
Adjustment made to the fair value of contingent liability	'	'	'	'	100,000	'	'	'	'	'	'
Accounts receivable	'	'	'	300,000	'	'	'	'	'	'	'
Liabilities assumed	'	'	'	4,100,000	'	'	'	'	'	'	'
Deferred tax liabilities	'	'	'	4,000,000	'	'	'	'	'	'	'
Acquired noncurrent deferred revenue	'	'	'	100,000	'	'	'	'	'	'	'
Intangible assets	'	'	'	9,900,000	'	'	'	'	'	9,800,000	100,000
Estimated useful lives of intangible assets	'4 years 2 months	'	'	'	'	'12 years	'7 years	'6 months	'4 years	'	'
Weighted average useful life	'5 years 7 months	'	'	'7 years	'	'	'	'	'	'	'
Goodwill	129,424,000	95,540,000	74,235,000	13,400,000	'	'	'	'	'	'	'
Acquisition related costs	'	'	'	'	$300,000	'	'	'	'	'	'

Acquisitions_ActiveStrategy_In

Acquisitions ActiveStrategy, Inc. (Details) (USD $)

12 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Oct. 02, 2012

Mar. 31, 2014

Sep. 30, 2012

Sep. 30, 2012

Sep. 30, 2012

Sep. 30, 2012

Mar. 31, 2014

Oct. 02, 2012

Mar. 31, 2014

Oct. 02, 2012

ActiveStrategy, Inc.

ActiveStrategy, Inc.

ActiveStrategy, Inc.

Developed Technology Rights

Customer Relationship and Employee Related Intangibles

Trademarks

Minimum

Minimum

Maximum

Maximum

ActiveStrategy, Inc.

ActiveStrategy, Inc.

ActiveStrategy, Inc.

ActiveStrategy, Inc.

ActiveStrategy, Inc.

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Total purchase price

$46,036,000

$31,887,000

$12,829,000

$14,900,000

'

'

'

'

'

'

'

'

'

Net tangible assets

'

'

'

'

'

1,500,000

'

'

'

'

'

'

'

Accounts receivable

'

'

'

'

'

1,300,000

'

'

'

'

'

'

'

Deferred tax assets, current

'

'

'

'

'

900,000

'

'

'

'

'

'

'

Other current assets

'

'

'

'

'

300,000

'

'

'

'

'

'

'

Acquired noncurrent deferred revenue

'

'

'

'

'

1,000,000

'

'

'

'

'

'

'

Intangible assets

'

'

'

'

'

5,500,000

3,000,000

1,000,000

1,500,000

'

'

'

'

Estimated useful lives of intangible assets

'4 years 2 months

'

'

'

'

'

'

'

'

'6 months

'4 years

'12 years

'11 years

Weighted average useful life

'5 years 7 months

'

'

'7 years 2 months 12 days

'

'

'

'

'

'

'

'

'

Goodwill

129,424,000

95,540,000

74,235,000

'

'

7,900,000

'

'

'

'

'

'

'

Acquisition related costs

'

'

'

'

$200,000

'

'

'

'

'

'

'

'

Acquisitions_PivotHealth_Detai

Acquisitions PivotHealth (Details) (USD $)

12 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Aug. 02, 2011

Mar. 31, 2014

Mar. 31, 2012

Jul. 31, 2011

Jul. 31, 2011

Jul. 31, 2011

Mar. 31, 2014

Aug. 02, 2011

Mar. 31, 2014

Aug. 02, 2011

PivotHealth

PivotHealth

PivotHealth

PivotHealth

Customer Relationships And Trademark

Employee Related Intangibles

Minimum

Minimum

Maximum

Maximum

PivotHealth

PivotHealth

PivotHealth

PivotHealth

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Total purchase price

$46,036,000

$31,887,000

$12,829,000

$19,800,000

'

'

'

'

'

'

'

'

'

Initial payment in cash

'

'

'

16,900,000

'

'

'

'

'

'

'

'

'

Contingent earn-out liabilities

'

'

'

'

0

'

2,900,000

'

'

'

'

'

'

Additional downward adjustment made to the fair value of contingent liability

'

'

'

'

1,000,000

'

'

'

'

'

'

'

'

Total estimated purchase price allocated to acquired assets

'

'

'

'

'

'

1,800,000

'

'

'

'

'

'

Liabilities assumed

'

'

'

'

'

'

1,000,000

'

'

'

'

'

'

Intangible assets

'

'

'

'

'

'

6,400,000

6,000,000

400,000

'

'

'

'

Estimated useful lives of intangible assets

'4 years 2 months

'

'

'

'

'

'

'

'

'6 months

'6 months

'12 years

'9 years

Weighted average useful life

'5 years 7 months

'

'

'6 years 6 months

'

'

'

'

'

'

'

'

'

Goodwill

129,424,000

95,540,000

74,235,000

'

'

'

12,600,000

'

'

'

'

'

'

Acquisition related costs

'

'

'

'

'

$400,000

'

'

'

'

'

'

'

Discontinued_operations_Additi

Discontinued operations - Additional Information (Detail) (USD $)	1 Months Ended
In Millions, unless otherwise specified	Jan. 31, 2012	Jan. 20, 2012
	employee
Discontinued Operations and Disposal Groups [Abstract]	'	'
Sales of OptiLink business	'	$8.90
Number of employees transferred to the buyer	35	'

Fair_value_measurements_Additi

Fair value measurements - Additional Information (Detail) (USD $)	12 Months Ended								0 Months Ended	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Jun. 30, 2009	Mar. 31, 2014	Nov. 15, 2012	Mar. 31, 2014	Jul. 31, 2011	Oct. 31, 2012	Mar. 31, 2014	Dec. 31, 2009
					360 Fresh	360 Fresh	PivotHealth	PivotHealth	Southwind	Southwind	Southwind
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Common stock warrants	6,015,000	'	'	'	'	'	'	'	'	'	'
Significant transfers between Level 1, Level 2,or Level 3	$0	$0	'	'	'	'	'	'	'	'	'
Fair value of the common stock warrants	$0.44	$0.40	'	$0	'	'	'	'	'	'	'
Fair value change in common stock warrants	0	'	'	'	'	'	'	'	'	'	'
Business combination, consideration transferred	'	'	'	'	'	'	'	'	'	14,700,000	'
Fair value estimate discount rate	'	'	'	'	19.00%	'	'	'	'	16.00%	'
Shares transferred to satisfy earn-out liability	0	0	110,000	'	'	'	'	'	112,408	'	'
Earn-out liability	'	'	'	'	'	'	'	'	5,400,000	'	'
Contingent earn-out liabilities	'	'	'	'	2,600,000	2,500,000	0	2,900,000	'	6,100,000	5,600,000
Gain on conversion of notes receivable into preferred stock of unconsolidated entities	4,000,000	'	'	'	'	'	'	'	'	'	'
Fair value adjustments	$0	$0	'	'	'	'	'	'	'	'	'

Discontinued_operations_Compon

Discontinued operations - Components of Discontinued Operations Included in Consolidated Statements of Income (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Discontinued Operations and Disposal Groups [Abstract]	'	'	'
Revenue	$0	$0	$4,985
Costs and expenses:	'	'	'
Cost of services	0	0	4,330
Member relations and marketing	0	0	189
Gain on disposal	0	0	3,510
Income from discontinued operations before provision for income taxes	0	0	3,976
Provision for income taxes	0	0	-1,535
Net income from discontinued operations	$0	$0	$2,441

Fair_value_measurements_Fair_V

Fair value measurements - Fair Value Measurements of Financial Assets and Liabilities on Recurring Basis (Detail) (USD $)	Mar. 31, 2014		Mar. 31, 2013
Financial assets	'		'
Available-for-sale marketable securities	$164,396,000		$156,839,000
Recurring	'		'
Financial assets	'		'
Cash and cash equivalents	23,129,000	[1]	57,829,000
Available-for-sale marketable securities	164,396,000	[2]	156,839,000	[2]
Common stock warrants	550,000	[3]	550,000	[3]
Financial liabilities	'		'
Contingent earn-out liabilities	8,750,000	[4]	15,200,000	[4]
Recurring | Level 1	'		'
Financial assets	'		'
Cash and cash equivalents	23,129,000	[1]	57,829,000	[1]
Available-for-sale marketable securities	0	[2]	0	[2]
Common stock warrants	0	[3]	0	[3]
Financial liabilities	'		'
Contingent earn-out liabilities	0	[4]	0	[4]
Recurring | Level 2	'		'
Financial assets	'		'
Cash and cash equivalents	0	[1]	0	[1]
Available-for-sale marketable securities	164,396,000	[2]	156,839,000	[2]
Common stock warrants	0	[3]	0	[3]
Financial liabilities	'		'
Contingent earn-out liabilities	0	[4]	0	[4]
Recurring | Level 3	'		'
Financial assets	'		'
Cash and cash equivalents	0	[1]	0	[1]
Available-for-sale marketable securities	0	[2]	0	[2]
Common stock warrants	550,000	[3]	550,000	[3]
Financial liabilities	'		'
Contingent earn-out liabilities	$8,750,000	[4]	$15,200,000	[4]
[1]	Fair value is based on quoted market prices.
[2]	Fair value is determined using quoted market prices of the assets. For further detail, see Note 6, “Marketable securities.” The Company changed the classification of its marketable securities from Level 1 to Level 2 within the fair value hierarchy during the fiscal year ended March 31, 2014. The investments affected by this change are U.S. government-sponsored securities and tax exempt obligations of states that do not have observable prices in active markets. The Company concluded that these investments are more appropriately classified as Level 2 within the fair value hierarchy. The March 31, 2013 classification has been changed to conform to the revised presentation. The impact of this change is immaterial and has no effect on the previously reported consolidated statements of income, stockholders' equity, cash flows or balance sheets.
[3]	The fair value of the common stock warrants as of March 31, 2013 and 2014 was calculated to be $0.40 per share and $0.44 per share, respectively, using a Black-Scholes-Merton model. The significant assumptions as of March 31, 2013 were as follows: risk-free interest rate of 1.0%; expected term of 6.22 years; expected volatility of 39.38%; dividend yield of 0%; weighted average share price of $1.00 per share; and warrants expected to become exercisable of approximately 1,400,000 shares. The significant assumptions as of March 31, 2014 were as follows: risk-free interest rate of 1.7%; expected term of 5.22 years; expected volatility of 36.77%; dividend yield of 0%; weighted average share price of $1.12 per share; and a range of warrants expected to become exercisable of between 1,000,000 and 1,400,000 share
[4]	This fair value measurement is based on unobservable inputs that are supported by little or no market activity and reflect the Company’s own assumptions in measuring fair value using the income approach. In developing these estimates, the Company considered certain performance projections, historical results, and general macro-economic environment and industry trends.

Fair_value_measurements_Fair_V1

Fair value measurements - Fair Value Measurements of Financial Assets and Liabilities on Recurring Basis (Parenthetical) (Detail) (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2009
Fair Value Disclosures [Abstract]	'	'	'
Fair value of the common stock warrants	$0.44	$0.40	$0
Risk-free interest rate	1.70%	1.00%	'
Expected term	'5 years 2 months 19 days	'6 years 2 months 20 days	'
Expected volatility	36.77%	39.38%	'
Dividend yield	0.00%	0.00%	'
Weighted average exercise price	$1.12	$1	'
Warrants exercisable, minimum	1,000,000	'	'
Warrants exercisable, maximum	1,400,000	1,400,000	'

Fair_value_measurements_Reconc

Fair value measurements - Reconciliation of Change in Fair Value of Common Stock Warrants (Detail) (Common Stock Warrant, USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Common Stock Warrant	'		'
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'		'
Beginning balance	$550		$450
Fair value change in common stock warrants	0	[1]	100	[1]
Ending balance	$550		$550
[1]	Amounts were recognized in other income, net on the consolidated statements of income.

Fair_value_measurements_Reconc1

Fair value measurements - Reconciliation of Change in Contingent Earn-out Liabilities (Detail) (Contingent Earn Out Liability, USD $)

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

In Thousands, unless otherwise specified

Southwind

Southwind

Cielo

Cielo

PivotHealth

PivotHealth

360 Fresh

360 Fresh

360 Fresh

360 Fresh

Minimum

Minimum

Maximum

Maximum

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Beginning balance

$8,750

$15,200

$21,200

'

'

'

'

'

'

'

'

'

'

Adjustments made to the fair value of contingent liability

'

'

'

-3,350

[1]

5,600

[1]

0

[1]

400

[1]

-1,000

[1]

-2,200

[1]

100

[1]

0

[1]

'

'

Earn out payments

'

'

'

-2,200

-10,600

0

-1,700

'

'

'

'

'

'

Additions

'

'

'

'

'

'

'

'

'

'

'

0

2,500

Ending balance

$8,750

$15,200

$21,200

'

'

'

'

'

'

'

'

'

'

[1]

Amounts were recognized in cost of services on the consolidated statements of income.

Marketable_securities_Aggregat

Marketable securities - Aggregate Value, Amortized Cost, Gross Unrealized Gains, and Gross Unrealized Losses on Available-for-Sale Marketable Securities (Detail) (USD $)	Mar. 31, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Fair value	$164,396	$156,839
Amortized cost	166,997	154,897
Gross unrealized gains	1,060	2,798
Gross unrealized losses	3,661	856
U.S. government-sponsored enterprises	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Fair value	29,291	25,430
Amortized cost	30,344	25,347
Gross unrealized gains	0	83
Gross unrealized losses	1,053	0
Tax exempt obligations of states	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Fair value	135,105	131,409
Amortized cost	136,653	129,550
Gross unrealized gains	1,060	2,715
Gross unrealized losses	$2,608	$856

Marketable_securities_Marketab

Marketable securities - Marketable Securities Maturities (Detail) (USD $)	Mar. 31, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Investments, Debt and Equity Securities [Abstract]	'	'
Matures in less than 1 year, Fair market value	$2,426	'
Matures after 1 year through 5 years, Fair market value	44,867	'
Matures after 5 years through 10 years, Fair market value	87,956	'
Matures after 10 years through 20 years, Fair market value	29,147	'
Fair market value	164,396	156,839
Matures in less than 1 year, Amortized cost	2,404	'
Matures after 1 year through 5 years, Amortized cost	44,536	'
Matures after 5 years through 10 years, Amortized cost	89,436	'
Matures after 10 years through 20 years, Amortized cost	30,621	'
Amortized cost	$166,997	'

Marketable_securities_Gross_un

Marketable securities - Gross unrealized Losses and Fair Value of Company's Investments (Detail) (USD $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'
Less than 12 months, Fair value	$80,445
Less than 12 months, Gross unrealized losses	1,857
12 months or more, Fair value	45,328
12 months or more, Gross unrealized losses	1,804
Total, Fair value	125,773
Total, Gross unrealized losses	3,661
U.S. government-sponsored enterprises	'
Schedule of Available-for-sale Securities [Line Items]	'
Less than 12 months, Fair value	26,828
Less than 12 months, Gross unrealized losses	1,016
12 months or more, Fair value	2,463
12 months or more, Gross unrealized losses	37
Total, Fair value	29,291
Total, Gross unrealized losses	1,053
Tax exempt obligations of states	'
Schedule of Available-for-sale Securities [Line Items]	'
Less than 12 months, Fair value	53,617
Less than 12 months, Gross unrealized losses	841
12 months or more, Fair value	42,865
12 months or more, Gross unrealized losses	1,767
Total, Fair value	96,482
Total, Gross unrealized losses	$2,608

Marketable_securities_Addition

Marketable securities - Additional Information (Detail) (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Gross realized gains on sales of available-for-sale investments	$500,000	$0	$0
Gross realized losses on sales of available-for-sale investments	400,000	0	0
Weighted average maturity of marketable securities	'7 years 1 month 23 days	'	'
Gross unrealized losses	3,661,000	856,000	'
Investments matured	22,323	'	'
Tax exempt obligations of states	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Gross unrealized losses	2,608,000	856,000	'
Unrealized losses existed for less than one year	18	'	'
U.S. government-sponsored enterprises	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'
Gross unrealized losses	$1,053,000	$0	'
Unrealized losses existed for less than one year	10	'	'

Membership_fees_receivable_Mem

Membership fees receivable - Membership Fees Receivable (Detail) (USD $)	Mar. 31, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Membership fees receivable, gross	$454,747	$376,087
Allowance for uncollectible revenue	-6,850	-5,766
Membership fees receivable, net	447,897	370,321
Billed fees receivable	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Membership fees receivable, gross	87,476	76,594
Unbilled fees receivable	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Membership fees receivable, gross	$367,271	$299,493

Membership_fees_receivable_Add

Membership fees receivable - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2014
Receivables [Abstract]	'
Unbilled fees expected to be billed	'12 months

Property_and_equipment_Additio

Property and equipment - Additional Information (Detail) (USD $)	Mar. 31, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, net	$102,457	$73,572
Software development	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, net	$46,000	$30,700

Property_and_equipment_Schedul

Property and equipment - Schedule of Property and Equipment (Detail) (USD $)	Mar. 31, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Abstract]	'	'
Leasehold improvements	$39,425	$29,953
Furniture, fixtures and equipment	43,112	36,502
Software	100,808	65,589
Property and equipment, gross	183,345	132,044
Accumulated depreciation and amortization	-80,888	-58,472
Property and equipment, net	$102,457	$73,572

Goodwill_and_intangibles_Addit

Goodwill and intangibles - Additional Information (Detail) (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Goodwill And Intangible Assets [Line Items]	'	'	'
Impairment of goodwill	$0	$0	$0
Estimated useful lives of intangible assets	'4 years 2 months	'	'
Weighted average useful life	'5 years 7 months	'	'
Amortization expense for intangible assets	8,000,000	5,800,000	5,100,000
Future amortization expense to be recorded in 2014	8,800,000	'	'
Future amortization expense to be recorded in 2015	6,000,000	'	'
Future amortization expense to be recorded in 2016	5,500,000	'	'
Future amortization expense to be recorded in 2017	4,900,000	'	'
Future amortization expense to be recorded in 2018	3,700,000	'	'
Future amortization expense to be recorded thereafter	$3,700,000	'	'
Minimum	'	'	'
Goodwill And Intangible Assets [Line Items]	'	'	'
Estimated useful lives of intangible assets	'6 months	'	'
Maximum	'	'	'
Goodwill And Intangible Assets [Line Items]	'	'	'
Estimated useful lives of intangible assets	'12 years	'	'

Goodwill_and_intangibles_Chang

Goodwill and intangibles - Changes in Carrying Amount of Goodwill (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Goodwill [Roll Forward]	'	'
Beginning of year	$95,540	$74,235
Goodwill acquired	33,884	21,305
Ending balance	$129,424	$95,540

Goodwill_and_intangibles_Gross

Goodwill and intangibles - Gross and Net Carrying Balances and Accumulated Amortization of Intangibles (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Finite-Lived Intangible Assets [Line Items]	'	'
Weighted average useful life (years)	'4 years 2 months	'
Gross carrying amount	$58,567	$49,187
Accumulated amortization	-24,812	-16,806
Net carrying amount	33,755	32,381
Capitalized software	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Weighted average useful life (years)	'5 years	'
Gross carrying amount	11,508	6,438
Accumulated amortization	-2,266	-1,018
Net carrying amount	9,242	5,420
Developed software	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Weighted average useful life (years)	'6 years 1 month 6 days	'
Gross carrying amount	19,250	19,250
Accumulated amortization	-7,875	-4,659
Net carrying amount	11,375	14,591
Customer Relationships	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Weighted average useful life (years)	'8 years 1 month 6 days	'
Gross carrying amount	15,910	12,700
Accumulated amortization	-6,800	-4,735
Net carrying amount	9,110	7,965
Trademarks	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Weighted average useful life (years)	'6 years 2 months 12 days	'
Gross carrying amount	4,200	4,200
Accumulated amortization	-2,680	-2,118
Net carrying amount	1,520	2,082
Non-compete agreements	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Weighted average useful life (years)	'4 years 3 months 18 days	'
Gross carrying amount	1,400	1,400
Accumulated amortization	-900	-633
Net carrying amount	500	767
Customer Contracts	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Weighted average useful life (years)	'4 years 8 months 12 days	'
Gross carrying amount	6,299	5,199
Accumulated amortization	-4,291	-3,643
Net carrying amount	$2,008	$1,556

Investment_in_unconsolidated_e1

Investment in unconsolidated entity - Additional Information (Detail) (USD $)

1 Months Ended

12 Months Ended

4 Months Ended

6 Months Ended

12 Months Ended

1 Months Ended

1 Months Ended

12 Months Ended

Aug. 31, 2011

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Sep. 30, 2013

Jul. 31, 2013

Sep. 30, 2013

Mar. 31, 2014

Mar. 31, 2013

Sep. 22, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2014

Series A Preferred Stock

Series A Preferred Stock

Evolent

Evolent

Evolent

Evolent

Evolent

Evolent LLC

Evolent LLC

Evolent LLC

Evolent LLC

Evolent Health Holdings Inc

Evolent Health Holdings Inc

Evolent Health Holdings Inc

Series B Preferred Stock

Series B Preferred Stock

Schedule of Equity Method Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Initial contribution

$10,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity interest

44.00%

'

'

'

23.10%

23.60%

'

'

'

'

44.00%

'

57.00%

11.50%

11.30%

Proportionate share of the losses

'

'

7,900,000

1,300,000

'

'

'

'

'

'

'

'

'

'

'

Note bearing interest rate

'

'

'

'

'

'

8.00%

'

'

'

'

'

'

'

'

Financing Receivable, Net

'

'

'

'

'

'

'

'

'

4,400,000

'

'

'

'

'

Equity method investment additional funds provided

'

'

'

'

'

'

5,600,000

'

'

'

'

'

'

'

'

Note receivable decrease due to equity investment loss

'

'

'

'

'

'

'

4,000,000

'

'

'

'

'

'

'

Proportionate share of investee losses applied to carrying value of investment

'

'

'

'

'

'

'

0

10,100,000

'

'

'

'

'

'

Gain (Loss) resulting from dilution in ownership percentage

'

'

'

'

'

'

'

'

1,900,000

1,100,000

'

'

'

'

'

Cash provided to equity method investments

'

'

'

'

'

'

'

'

'

'

'

9,600,000

'

'

'

Notes receivable provided to equity method investments

'

'

'

'

'

'

'

'

'

'

'

10,100,000

'

'

'

Equity method investments, shares acquired

'

'

'

'

'

'

'

'

'

'

'

'

'

1,302,172

'

Gain on conversion of notes receivable into preferred stock of unconsolidated entities

'

4,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Cost method investments

'

5,000,000

'

'

0

'

'

'

'

'

'

'

'

'

'

Loss from equity method investments

'

6,051,000

6,756,000

1,337,000

'

'

'

'

'

'

'

'

'

'

3,800,000

Equity method investment, amortization related to intangible assets, basis difference

'

'

'

'

'

'

'

'

'

'

'

'

'

'

400,000

Equity method investments

'

$15,857,000

$6,265,000

'

'

'

'

'

'

'

'

'

'

'

$15,900,000

Investments_in_and_Advances_to

Investments in and Advances to Unconsolidated Entities - Summary of Financial Position of Evolent (Detail) 10Q (Evolent LLC, USD $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Evolent LLC	'
Assets:	'
Current assets	$78,692
Non-current assets	20,151
Total assets	98,843
Liabilities and Members' Equity:	'
Current liabilities	35,453
Non-current liabilities	3,173
Total liabilities	38,626
Redeemable equity	78,360
Members’ equity	-18,143
Total liabilities and members’ equity	$98,843

Investments_in_and_Advances_to1

Investments in and Advances to Unconsolidated Entities - Summary of Operating Results of Evolent (Detail) 10Q (Evolent LLC, USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Evolent LLC	'	'	'
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]	'	'	'
Revenue	$35,788	$0	$0
Operating expenses	-54,497	0	0
Depreciation and amortization	-1,381	0	0
Interest, net	16	0	0
Taxes	0	0	0
Net loss	($20,074)	$0	$0

Investments_in_and_Advances_to2

Investments in and Advances to Unconsolidated Entities - Summary of Financial Position of Evolent Health Holdings (Details) 10Q (Evolent Health Holdings Inc, USD $)	Mar. 31, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Evolent Health Holdings Inc	'	'
Assets:	'	'
Current assets	$0	$9,842
Non-current assets	48,172	10,571
Total assets	48,172	20,413
Liabilities and Members' Equity:	'	'
Current liabilities	0	11,716
Non-current liabilities	0	10,116
Total liabilities	0	21,832
Redeemable shares	38,680	0
Members’ equity	9,492	-1,419
Total liabilities and members’ equity	$48,172	$20,413

Investments_in_and_Advances_to3

Investments in and Advances to Unconsolidated Entities - Summary of Operating Results of Evolent Health Holdings (Details) 10Q (Evolent Health Holdings Inc, USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Evolent Health Holdings Inc	'	'	'
Schedule of Cost-method Investments [Line Items]	'	'	'
Revenue	$25,671	$13,082	$1,480
Operating expenses	-45,617	-36,183	-4,445
Depreciation and amortization	-1,208	-1,038	-9
Interest, net	-820	-149	7
Taxes	-8	333	0
Gain from deconsolidation	46,246	0	0
Income/loss from investments	-7,141	0	0
Net loss	$17,123	($23,955)	($2,967)

Other_noncurrent_assets_Additi

Other non-current assets - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended
	Jun. 30, 2009	Mar. 31, 2014	Mar. 31, 2013
Investments, All Other Investments [Abstract]	'	'	'
Common stock purchased by company	6,015,000	'	'
Exercise price	$1	'	'
Warrants recorded at their fair value	'	$550,000	$550,000
Convertible preferred stock investment is recorded at cost	'	$5,000,000	'
Convertible preferred stock carries a dividend rate	'	8.00%	'
Dividends declared	'	$0	'

Noncontrolling_interest_Additi

Noncontrolling interest - Additional Information (Detail) (USD $)	Mar. 31, 2014
In Millions, unless otherwise specified
Noncontrolling Interest [Abstract]	'
Redeemable noncontrolling interest	$0.10
Estimated maximum total redemption amount	$7.50
Noncontrolling interest ownership percentage	100.00%
Ownership interest	0.00%

Revolving_credit_facility_Addi

Revolving credit facility - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended
	Jul. 30, 2012	Mar. 31, 2014	Mar. 31, 2013
		financial_ratio
Line of Credit Facility [Line Items]	'	'	'
Amount of revolving credit facility	$150,000,000	'	'
Duration of senior secured revolving credit facility	'5 years	'	'
Additional borrowings under the revolving credit facility	'	50,000,000	'
Minimum increments under the credit agreement	'	10,000,000	'
Maximum principal amount of swing line loans	'	5,000,000	'
Issuance of letters of credit under sublimit	'	10,000,000	'
Revolving credit facility matures	'	30-Jul-17	'
Debt instrument basis spread on variable rate minimum	'	1.75%	'
Debt instrument basis spread on variable rate maximum	'	2.50%	'
Amounts outstanding on the revolving credit facility	'	0	0
Amounts available for borrowing	'	150,000,000	150,000,000
Number of financial ratios required to be satisfied	'	3	'
Secured Debt	'	'	'
Line of Credit Facility [Line Items]	'	'	'
Amount of revolving credit facility	'	150,000,000	'
Financing fees related to revolving credit facility	'	$800,000	'
Minimum	'	'	'
Line of Credit Facility [Line Items]	'	'	'
Alternate base rate loans under credit agreement	'	0.75%	'
Commitment fee percentage on unutilized portion	'	0.25%	'
Maximum	'	'	'
Line of Credit Facility [Line Items]	'	'	'
Alternate base rate loans under credit agreement	'	1.50%	'
Commitment fee percentage on unutilized portion	'	0.40%	'

Stockholders_equity_Additional

Stockholders' equity - Additional Information (Detail) (USD $)	1 Months Ended		12 Months Ended			123 Months Ended	0 Months Ended
	31-May-13	1-May-12	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2014	Jun. 18, 2012	1-May-12
							Common Stock	Common Stock
Class of Stock [Line Items]	'	'	'	'	'	'	'	'
Increased share repurchase program	$450,000,000	'	'	'	'	'	'	'
Number of shares repurchased under stock repurchase program	'	'	376,532	385,314	223,438	16,026,626	'	'
Purchases of treasury stock	'	'	21,917,000	17,999,000	6,580,000	'	'	'
Total cost of common stock repurchase	'	'	340,900,000	'	'	340,900,000	'	'
Remaining authorized repurchase amount	'	'	87,200,000	'	'	'	'	'
Number of shares retired by the Company	'	'	13,650,094	'	'	'	'	'
Post-confirmation, preferred and common stock held in treasury	'	'	3,000	70,000	'	'	'	'
Treasury stock retirement resulted in reductions to treasury stock	'	'	21,900,000	307,800,000	'	'	'	'
Treasury stock retirement resulted in reductions to retained earnings	'	'	$21,900,000	$307,700,000	'	'	'	'
Stockholder's equity stock split	'	'The Company's Board of Directors approved a two-for-one split of the Company's common stock to be effected in the form of a stock dividend. As a result of this action, one additional share was issued on June 18, 2012 for each share held by stockholders of record at the close of business on May 31, 2012.	'	'	'	'	'	'
Stockholders' equity, stock split conversion ratio	'	'	'	'	'	'	2	2

Stockbased_compensation_Additi

Stock-based compensation - Additional Information (Detail) (USD $)

12 Months Ended

0 Months Ended

7 Months Ended

12 Months Ended

12 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Sep. 05, 2013

Sep. 13, 2011

Mar. 31, 2014

Jun. 26, 2009

Mar. 31, 2014

Mar. 31, 2014

Nov. 15, 2005

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

General Employee

General Employee

Board Of Directors

Executive One

Executive Two

2009 Plan

2009 Plan

2009 Plan

2009 Plan

2006 Plan

2005 Plan

2005 Plan

Employee Stock

Minimum

Maximum

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares increases for issuance

'

'

'

'

'

'

'

'

2,125,000

2,500,000

'

'

'

'

'

'

'

'

Common stock available for issuance

'

'

'

'

'

'

'

'

'

'

2,384,443

6,735,000

'

715,670

3,200,000

1,487,207

'

'

Maximum contractual term

'

'

'

'

'

'

'

'

'5 years

'

'7 years

'

'5 years

'7 years

'

'

'

'

Number of shares granted

536,958

361,844

601,412

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average exercise price of options granted

$51.71

$44

$24.98

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Options exercised, Shares

1,327,358

1,477,219

1,775,510

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Options for a total intrinsic value

$53,700,000

$44,300,000

$27,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock options, vested

850,087

710,972

729,182

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock options, vested with fair value

5,300,000

3,800,000

3,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restricted stock units granted

550,384

342,240

464,700

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average grant date fair value of RSU

$53.64

$44.39

$24.81

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Participants vested in RSU

346,310

292,020

226,168

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total intrinsic value of RSU

17,200,000

13,600,000

7,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares withhold to satisfy minimum employee tax withholding

119,108

89,155

75,662

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payroll deductions to purchase shares, Minimum

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payroll deductions to purchase shares, Maximum

15.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Rate of purchase of ESPP shares

95.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares authorized under ESPP

1,684,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares issued under ESPP

8,962

7,748

6,684

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Average price per ESPP per share

$57.31

$46.77

$33.17

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Discount of the purchase date closing price

5.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Option vesting term

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'6 months

'4 years

Estimated forfeiture rate

'

'

'

10.00%

15.00%

0.00%

1.00%

5.00%

'

'

'

'

'

'

'

'

'

'

Stock-based compensation costs capitalized as part of the cost of an asset

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total unrecognized compensation cost related to stock-based compensation

43,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average period of stock-based compensation

'2 years 10 months 26 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Tax benefits associated with compensation expense

$19,476,000

$20,535,000

$7,593,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stockbased_compensation_Summar

Stock-based compensation - Summary of Changes in Common Stock Options (Detail) (USD $)	12 Months Ended
	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Number of Options	'		'		'
Number of Options, Outstanding, Beginning balance	2,692,353	[1]	3,812,228	[1]	5,059,198
Number of Options, Granted	536,958		361,844		601,412
Number of Options, Exercised	-1,327,358		-1,477,219		-1,775,510
Number of Options, Forfeited	-71,630		-4,500		-72,872
Number of Options, Outstanding, Ending balance	1,830,323	[1]	2,692,353	[1]	3,812,228	[1]
Number of Options, Exercisable, Ending balance	680,978	[2]	'		'
Weighted Average Exercise Price	'		'		'
Weighted Average Exercise Price, Outstanding, Beginning balance	$21.06	[1]	$17.05	[1]	$16.40
Weighted Average Exercise Price, Granted	$51.71		$44		$24.98
Weighted Average Exercise Price, Exercised	$16.60		$16.35		$17.48
Weighted Average Exercise Price, Forfeited	$32.93		$9.26		$20.33
Weighted Average Exercise Price, Outstanding, Ending balance	$32.82	[1]	$21.06	[1]	$17.05	[1]
Weighted Average Exercise Price, Exercisable, Ending balance	$19.57	[2]	'		'
[1]	The weighted average remaining contractual term for the fiscal year ended March 31, 2014 is approximately three years and the aggregate intrinsic value is $57.7 million.
[2]	The weighted average remaining contractual term for the fiscal year ended March 31, 2014 is approximately two years and the aggregate intrinsic value is $30.4 million

Stockbased_compensation_Summar1

Stock-based compensation - Summary of Changes in Common Stock Options (Parenthetical) (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Weighted average remaining contractual term in years, outstanding	'3 years
Aggregate intrinsic value, outstanding	$57.70
Weighted average remaining contractual term in years, exercisable	'2 years
Aggregate intrinsic value, exercisable	$30.40

Stockbased_compensation_Summar2

Stock-based compensation - Summary of Exercise Prices and Contractual Lives of Options Outstanding under Stock Incentive Plans (Detail) (USD $)	12 Months Ended
	Mar. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Shares	1,830,323
Weighted Average Exercise Price	$32.82
Weighted Average Remaining Contractual Life - Years	'3 years 6 months 2 days
Exercise Price Range One	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Range of Exercise Price, Minimum	$0
Range of Exercise Price, Maximum	$9.99
Shares	219,906
Weighted Average Exercise Price	$9.26
Weighted Average Remaining Contractual Life - Years	'2 years 1 month 6 days
Exercise Price Range Two	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Range of Exercise Price, Minimum	$10
Range of Exercise Price, Maximum	$19.99
Shares	284,332
Weighted Average Exercise Price	$16.85
Weighted Average Remaining Contractual Life - Years	'2 years
Exercise Price Range Three	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Range of Exercise Price, Minimum	$20
Range of Exercise Price, Maximum	$29.99
Shares	471,791
Weighted Average Exercise Price	$24.62
Weighted Average Remaining Contractual Life - Years	'2 years 10 months 28 days
Exercise Price Range Four	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Range of Exercise Price, Minimum	$30
Range of Exercise Price, Maximum	$39.99
Shares	5,000
Weighted Average Exercise Price	$34.06
Weighted Average Remaining Contractual Life - Years	'2 years 8 months 15 days
Exercise Price Range Five	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Range of Exercise Price, Minimum	$40
Range of Exercise Price, Maximum	$49.99
Shares	730,776
Weighted Average Exercise Price	$46.15
Weighted Average Remaining Contractual Life - Years	'4 years 3 months 19 days
Exercise Price Range Six	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Range of Exercise Price, Minimum	$50
Range of Exercise Price, Maximum	$59.99
Shares	11,253
Weighted Average Exercise Price	$57.88
Weighted Average Remaining Contractual Life - Years	'6 years 4 months 26 days
Exercise Price Range Seven	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Range of Exercise Price, Minimum	$60
Range of Exercise Price, Maximum	$69.99
Shares	107,265
Weighted Average Exercise Price	$66.06
Weighted Average Remaining Contractual Life - Years	'6 years 10 months 28 days

Stockbased_compensation_Summar3

Stock-based compensation - Summary of Changes in RSUs (Detail) (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Number of options RSUs	'	'	'
Number of RSUs, Non-vested, Balance	943,206	896,640	664,218
Number of RSUs, Granted	550,384	342,240	464,700
Number of RSUs, Forfeited	-36,818	-3,654	-6,110
Number of RSUs, Vested	-346,310	-292,020	-226,168
Number of RSUs, Non-vested, Balance	1,110,462	943,206	896,640
Weighted Average Grant Date Fair Value, RSU	'	'	'
Weighted Average Grant Date Fair Value non-vested, Balance	$29.50	$20.77	$17.34
Weighted Average Grant Date Fair Value, Granted	$53.64	$44.39	$24.81
Weighted Average Grant Date Fair Value, Forfeited	$39.88	$19.98	$23.53
Weighted Average Grant Date Fair Value, Vested	$26.53	$20.26	$18.92
Weighted Average Grant Date Fair Value Non-vested, Balance	$42.05	$29.50	$20.77

Stockbased_compensation_Valuat

Stock-based compensation - Valuation of Stock Options (Detail) (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Share Based Payment Award Stock Options Valuation Assumptions [Line Items]	'	'	'
Risk-free interest rate, Minimum	0.34%	0.43%	0.66%
Risk-free interest rate, Maximum	1.71%	1.15%	2.22%
Expected volatility, Minimum	30.40%	33.20%	36.70%
Expected volatility, Maximum	38.00%	40.70%	41.60%
Dividend yield	0.00%	0.00%	0.00%
Weighted average exercise price of options granted	$51.71	$44	$24.98
Weighted average grant date fair value of options granted	$14.77	$13.33	$8.24
Number of shares granted	536,958	361,844	601,412
Minimum	'	'	'
Share Based Payment Award Stock Options Valuation Assumptions [Line Items]	'	'	'
Expected lives in years	'3 years 3 months	'3 years 3 months	'3 years
Maximum	'	'	'
Share Based Payment Award Stock Options Valuation Assumptions [Line Items]	'	'	'
Expected lives in years	'5 years 6 months	'5 years 6 months	'5 years 3 months

Stockbased_compensation_Summar4

Stock-based compensation - Summary of Stock-based Compensation Expense (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Stock-based compensation expense included in Costs and expenses	'	'	'	'	'	'	'	'	'	'	'
Total costs and expenses	'	'	'	'	'	'	'	'	$18,217	$13,913	$11,986
Income from operations	17,183	7,875	11,390	10,738	12,884	9,736	12,490	10,365	47,186	45,475	36,372
Net income before allocation to noncontrolling interest	'	'	'	'	'	'	'	'	24,633	23,300	25,303
Employee Stock Purchase Plan	'	'	'	'	'	'	'	'	'	'	'
Stock-based compensation expense included in Costs and expenses	'	'	'	'	'	'	'	'	'	'	'
Total costs and expenses	'	'	'	'	'	'	'	'	18,217	13,913	11,986
Income from operations	'	'	'	'	'	'	'	'	-18,217	-13,913	-11,986
Net income before allocation to noncontrolling interest	'	'	'	'	'	'	'	'	-11,204	-8,686	-7,359
Impact on diluted earnings per share	'	'	'	'	'	'	'	'	($0.30)	($0.24)	($0.21)
Cost of services | Employee Stock Purchase Plan	'	'	'	'	'	'	'	'	'	'	'
Stock-based compensation expense included in Costs and expenses	'	'	'	'	'	'	'	'	'	'	'
Total costs and expenses	'	'	'	'	'	'	'	'	5,527	3,975	3,440
Member relations and marketing | Employee Stock Purchase Plan	'	'	'	'	'	'	'	'	'	'	'
Stock-based compensation expense included in Costs and expenses	'	'	'	'	'	'	'	'	'	'	'
Total costs and expenses	'	'	'	'	'	'	'	'	3,688	2,643	2,133
General and administrative | Employee Stock Purchase Plan	'	'	'	'	'	'	'	'	'	'	'
Stock-based compensation expense included in Costs and expenses	'	'	'	'	'	'	'	'	'	'	'
Total costs and expenses	'	'	'	'	'	'	'	'	9,002	7,295	6,413
Depreciation and amortization | Employee Stock Purchase Plan	'	'	'	'	'	'	'	'	'	'	'
Stock-based compensation expense included in Costs and expenses	'	'	'	'	'	'	'	'	'	'	'
Total costs and expenses	'	'	'	'	'	'	'	'	$0	$0	$0

Stockbased_compensation_Summar5

Stock-based compensation - Summary of Stock-based Compensation Expense by Award (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation	$18,217	$13,913	$11,986
Stock options	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation	4,846	5,000	5,072
Restricted stock units	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation	13,371	8,913	6,914
Employee stock purchase rights	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation	$0	$0	$0

Income_taxes_Summary_of_Provis

Income taxes - Summary of Provision for Income Taxes (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Income Tax Disclosure [Abstract]	'	'	'
Current	$11,413	$17,382	$14,903
Deferred	7,795	641	304
Provision for income taxes	$19,208	$18,023	$15,207

Income_taxes_Statutory_Rates_t

Income taxes - Statutory Rates to Income before Provision for Income Taxes (Detail)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Income Tax Disclosure [Abstract]	'	'	'
Statutory U.S. federal income tax rate	35.00%	35.00%	35.00%
State income tax, net of U.S. federal income tax benefit	6.00%	5.90%	5.50%
Tax-exempt interest income	-1.70%	-2.00%	-1.50%
Washington, D.C. QHTC income tax credits	-4.00%	-5.40%	-3.10%
Other permanent differences, net	3.20%	4.00%	2.70%
Effective tax rate on continuing operations	38.50%	37.50%	38.60%

Income_taxes_Tax_Effect_of_Dif

Income taxes - Tax Effect of Differences between Tax Bases of Assets and Liabilities (Detail) (USD $)	Mar. 31, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
Deferred Tax Assets, Net, Classification [Abstract]	'	'
Tax credit carryforwards	$11,199	$10,848
Deferred compensation accrued for financial reporting purposes	11,692	8,592
Stock-based compensation	8,942	8,548
Acquired net operating loss carryforwards	5,444	3,279
Reserve for uncollectible revenue	2,812	2,355
Book/tax basis difference in investment in unconsolidated entities	1,677	0
Unrealized losses on available-for-sale securities	1,270	0
Acquired intangibles and goodwill	0	195
Other	1,628	778
Total deferred tax assets	44,664	34,595
Valuation allowance	-1,677	0
Total deferred tax assets, net of valuation allowance	42,987	34,595
Capitalized software development costs	-22,659	-14,648
Deferred incentive compensation and other deferred charges	-9,234	-5,968
Acquired intangibles and goodwill	-5,097	0
Unrealized gains on available-for-sale securities	0	-680
Depreciation	-1,616	-2,417
Other	-426	-225
Total deferred tax liabilities	-39,032	-23,938
Net deferred income tax assets	$3,955	$10,657

Income_taxes_Additional_Inform

Income taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2008
Income Tax Examination [Line Items]	'	'	'	'
Operating loss carryforwards	$15,600,000	'	'	'
Valuation allowance	1,677,000	0	'	'
Unrecognized tax benefits	0	0	'	'
Interest or penalties on unrecognized tax benefits	0	0	0	'
D.C. QHTC statutory income tax rate	6.00%	'	'	0.00%
D.C. QHTC statutory income tax rate, prior to the qualification	9.98%	'	'	'
Washington, D.C. tax credits	17,200,000	'	'	'
Minimum	'	'	'	'
Income Tax Examination [Line Items]	'	'	'	'
Range of expiration dates of Washington, D.C. tax credits	'2017	'	'	'
Maximum	'	'	'	'
Income Tax Examination [Line Items]	'	'	'	'
Range of expiration dates of Washington, D.C. tax credits	'2024	'	'	'
Equity Method Investment in Unconsolidated Entities	'	'	'	'
Income Tax Examination [Line Items]	'	'	'	'
Valuation allowance	$1,700,000	'	'	'

Commitments_and_contingencies_1

Commitments and contingencies - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Operating Leased Assets [Line Items]	'	'	'
Percentage of headquarters space under operating lease	70.00%	'	'
Depreciated leases	$25.30	$17.50	'
Date of expiration of operating lease	31-Dec-19	'	'
Rental and executory expenses	17.4	14.2	11.9
Total of minimum rentals to be received in the future under noncancelable subleases	0.2	'	'
Purchase obligation, 2015	5	'	'
Purchase obligation, 2016	5	'	'
Purchase obligation, 2017	3	'	'
Purchase obligation, 2018	2	'	'
Purchase obligation, 2019	1	'	'
Minimum age of employees for defined contribution plan	'21 years	'	'
Minimum discretionary matching contributions	0.00%	'	'
Maximum discretionary matching contributions	100.00%	'	'
Maximum percentage of employee contribution of base salary	4.00%	'	'
Discretionary contributions	$4.60	$2.70	$2.90
Texas Lease	'	'	'
Operating Leased Assets [Line Items]	'	'	'
Date of expiration of operating lease	31-Mar-21	'	'
Tennessee Lease	'	'	'
Operating Leased Assets [Line Items]	'	'	'
Date of expiration of operating lease	30-Apr-20	'	'
Illinois Lease	'	'	'
Operating Leased Assets [Line Items]	'	'	'
Date of expiration of operating lease	31-Mar-15	'	'
California Lease	'	'	'
Operating Leased Assets [Line Items]	'	'	'
Date of expiration of operating lease	31-Aug-17	'	'
Michigan Lease	'	'	'
Operating Leased Assets [Line Items]	'	'	'
Date of expiration of operating lease	31-Dec-14	'	'
Pennsylvania Lease	'	'	'
Operating Leased Assets [Line Items]	'	'	'
Date of expiration of operating lease	30-Sep-16	'	'
Arizona Lease	'	'	'
Operating Leased Assets [Line Items]	'	'	'
Date of expiration of operating lease	31-Aug-14	'	'
England Lease	'	'	'
Operating Leased Assets [Line Items]	'	'	'
Date of expiration of operating lease	31-Jul-14	'	'
India Lease	'	'	'
Operating Leased Assets [Line Items]	'	'	'
Date of expiration of operating lease	31-Dec-16	'	'

Commitments_and_contingencies_2

Commitments and contingencies - Future Minimum Lease Payments (Detail) (USD $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]	'
2014	$13,563
2015	13,200
2016	13,054
2017	10,733
2018	10,382
Thereafter	6,112
Total	$67,044

Segments_and_geographic_areas_1

Segments and geographic areas - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2014
	Segment
Segment Reporting [Abstract]	'
Number of operating segments	2

Segments_and_geographic_areas_2

Segments and geographic areas - Revenue Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'
Revenue	$520,596	$450,837	$370,345
United States	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'
Revenue	504,211	434,640	357,937
Other Countries	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'
Revenue	$16,385	$16,197	$12,408

Quarterly_financial_data_Addit

Quarterly financial data - Additional Information (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Operating income, net	$17,183	$7,875	$11,390	$10,738	$12,884	$9,736	$12,490	$10,365	$47,186	$45,475	$36,372
Net income	8,287	3,771	9,002	3,692	6,542	4,592	7,647	4,627	24,752	23,408	25,303
Net income attributable to common stockholders per share - basic	$0.23	$0.10	$0.25	$0.10	$0.19	$0.13	$0.22	$0.14	$0.69	$0.67	$0.77
Restatement Adjustment	'	'	'	'	'	'	'	'	'	'	'
Operating income, net	'	'	'	'	'	'	'	'	'	2,009	14
Net income	'	'	'	'	'	'	'	'	'	1,245	10
Net income attributable to common stockholders per share - basic	'	'	'	'	'	'	'	'	'	$0.03	$0
Restatement Adjustment | Software Capitalization Cost Error	'	'	'	'	'	'	'	'	'	'	'
Operating income, net	'	'	'	'	200	200	300	1,300	'	'	'
Net income	'	'	'	'	$100	$200	$200	$800	'	'	'
Net income attributable to common stockholders per share - basic	'	'	'	'	$0.01	$0	$0	$0.03	'	'	'

Quarterly_financial_data_Summa

Quarterly financial data - Summarized Financial Data (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Quarterly Financial Information Disclosure [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Revenue	$138,001	$131,038	$128,341	$123,216	$119,706	$116,231	$110,758	$104,142	$520,596	$450,837	$370,345
Operating income	17,183	7,875	11,390	10,738	12,884	9,736	12,490	10,365	47,186	45,475	36,372
Income from continuing operations before provision for income taxes and equity in loss of unconsolidated entities	17,915	8,235	12,481	11,261	13,486	10,474	13,178	10,941	49,892	48,079	39,406
Net income attributable to common stockholders	$8,287	$3,771	$9,002	$3,692	$6,542	$4,592	$7,647	$4,627	$24,752	$23,408	$25,303
Earnings per share:	'	'	'	'	'	'	'	'	'	'	'
Basic	$0.23	$0.10	$0.25	$0.10	$0.19	$0.13	$0.22	$0.14	$0.69	$0.67	$0.77
Diluted	$0.22	$0.10	$0.24	$0.10	$0.18	$0.13	$0.21	$0.13	$0.67	$0.64	$0.73

Subsequent_events_Additional_I

Subsequent events - Additional Information (Detail) (HealthPost Solutions, Subsequent events, USD $)	0 Months Ended
In Millions, unless otherwise specified	5-May-14
HealthPost Solutions | Subsequent events	'
Subsequent Event [Line Items]	'
Total purchase price	$26

Schedule_II_Valuation_and_Qual1

Schedule II - Valuation and Qualifying Accounts (Detail) (Allowance for uncollectible revenue, USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Allowance for uncollectible revenue	'	'	'
Movement in Valuation Allowances and Reserves [Roll Forward]	'	'	'
Balance at Beginning of Year	$5,766	$5,540	$4,885
Additions Charged to Revenue	8,011	5,685	4,640
Additions Charged to Other Accounts	0	0	0
Deductions From Reserve	6,927	5,459	3,985
Balance at End of Year	$6,850	$5,766	$5,540