Blackbaud (BLKB) 10-K 26 Feb 14 2013 FY Annual report Financial data

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Feb. 12, 2014	Jun. 30, 2013
Document And Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Trading Symbol	'BLKB	'	'
Entity Registrant Name	'BLACKBAUD INC	'	'
Entity Central Index Key	'0001280058	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	46,119,969	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Public Float	'	'	$1,086,346,945

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$11,889	$13,491
Donor restricted cash	107,362	68,177
Accounts receivable, net of allowance of $5,613 and $8,546 at December 31, 2013 and 2012, respectively	66,969	75,692
Prepaid expenses and other current assets	30,115	40,589
Deferred tax asset, current portion	13,434	15,799
Total current assets	229,769	213,748
Property and equipment, net	49,550	49,063
Goodwill	264,599	265,055
Intangible assets, net	143,441	168,037
Other assets	19,251	9,844
Total assets	706,610	705,747
Current liabilities:	'	'
Trade accounts payable	10,244	13,623
Accrued expenses and other current liabilities	40,443	45,996
Donations payable	107,362	68,177
Debt, current portion	17,158	10,000
Deferred revenue, current portion	181,475	173,899
Total current liabilities	356,682	311,695
Debt, net of current portion	135,750	205,500
Deferred tax liability	36,880	24,468
Deferred revenue, net of current portion	9,099	11,119
Other liabilities	6,655	5,281
Total liabilities	545,066	558,063
Commitments and contingencies (see Note 11)	'	'
Stockholders' equity:	'	'
Preferred stock; 20,000,000 shares authorized, none outstanding	0	0
Common stock, $0.001 par value; 180,000,000 shares authorized, 55,699,817 and 54,859,604 shares issued at December 31, 2013 and 2012, respectively	56	55
Additional paid-in capital	220,763	203,638
Treasury stock, at cost; 9,573,102 and 9,209,371 shares at December 31, 2013 and 2012, respectively	-183,288	-170,898
Accumulated other comprehensive loss	-1,385	-1,973
Retained earnings	125,398	116,862
Total stockholders' equity	161,544	147,684
Total liabilities and stockholders' equity	$706,610	$705,747

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Accounts Receivable, allowance (in dollars)	$5,613	$8,546
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollar per share)	$0.00	$0.00
Common stock, shares authorized	180,000,000	180,000,000
Common stock, shares issued	55,699,817	54,859,604
Treasury stock, shares	9,573,102	9,209,371

Consolidated_Statements_Of_Com

Consolidated Statements Of Comprehensive Income (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenue	'	'	'
License fees	$16,715	$20,551	$19,475
Subscriptions	212,656	162,102	103,544
Services	126,548	119,626	108,781
Maintenance	138,745	136,101	130,604
Other revenue	9,153	9,039	8,464
Total revenue	503,817	447,419	370,868
Cost of revenue	'	'	'
Cost of license fees	2,763	2,993	3,345
Cost of subscriptions	93,649	68,773	42,536
Cost of services	104,005	97,208	79,086
Cost of maintenance	25,741	26,001	25,178
Cost of other revenue	6,505	7,485	7,049
Total cost of revenue	232,663	202,460	157,194
Gross profit	271,154	244,959	213,674
Operating expenses	'	'	'
Sales and marketing	97,614	95,218	75,361
Research and development	65,645	64,692	47,672
General and administrative	50,320	63,133	36,933
Restructuring	3,494	175	0
Amortization	2,539	2,106	980
Impairment of cost method investment	0	200	1,800
Total operating expenses	219,612	225,524	162,746
Income from operations	51,542	19,435	50,928
Interest income	67	146	183
Interest expense	-5,818	-5,864	-200
Other (expense) income, net	-462	-392	346
Income before provision for income taxes	45,329	13,325	51,257
Income tax provision	14,857	6,742	18,037
Net income	30,472	6,583	33,220
Earnings per share	'	'	'
Basic	$0.68	$0.15	$0.76
Diluted	$0.67	$0.15	$0.75
Common shares and equivalents outstanding	'	'	'
Basic weighted average shares	44,684,812	44,145,535	43,522,563
Diluted weighted average shares	45,421,140	44,691,845	44,149,054
Dividends per share	$0.48	$0.48	$0.48
Other comprehensive income (loss)	'	'	'
Foreign currency translation adjustment	53	-34	-336
Unrealized gain (loss) on derivative instruments, net of tax	535	-791	0
Total other comprehensive income (loss)	588	-825	-336
Comprehensive income	$31,060	$5,758	$32,884

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities	'	'	'
Net income	$30,472	$6,583	$33,220
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Depreciation and amortization	43,164	32,241	16,995
Provision for doubtful accounts and sales returns	5,403	9,591	5,646
Stock-based compensation expense	16,910	19,240	14,884
Excess tax benefits from stock-based compensation	0	-81	-932
Deferred taxes	13,873	7,585	13,533
Impairment of cost method investment	0	200	1,800
Gain on sale of assets	0	0	-549
Amortization of deferred financing costs	613	678	164
Other non-cash adjustments	1,261	-293	-1,042
Changes in operating assets and liabilities, net of acquisition of businesses:	'	'	'
Accounts receivable	3,161	-9,397	-8,692
Prepaid expenses and other assets	2,977	-8,817	-2,915
Trade accounts payable	-218	-1,363	1,714
Accrued expenses and other liabilities	-17,055	-388	-1,056
Donor restricted cash	-39,801	-27,990	-22,862
Donations payable	39,801	27,990	22,862
Deferred revenue	6,683	12,912	12,757
Net cash provided by operating activities	107,244	68,691	85,527
Cash flows from investing activities	'	'	'
Purchase of property and equipment	-20,086	-20,557	-18,215
Purchase of net assets of acquired companies, net of cash acquired	-876	-280,687	-23,385
Capitalized software development costs	-3,197	-1,245	-1,012
Proceeds from sale of assets	0	0	874
Net cash used in investing activities	-24,159	-302,489	-41,738
Cash flows from financing activities	'	'	'
Proceeds from issuance of debt	103,008	315,000	0
Payments on debt	-165,600	-99,500	0
Payments of deferred financing costs	0	-2,440	-767
Proceeds from exercise of stock options	385	3,146	2,041
Excess tax benefits from stock-based compensation	0	81	932
Dividend payments to stockholders	-22,081	-21,731	-21,429
Payments on capital lease obligations	0	0	-40
Net cash (used in) provided by financing activities	-84,288	194,556	-19,263
Effect of exchange rate on cash and cash equivalents	-399	213	-10
Net (decrease) increase in cash and cash equivalents	-1,602	-39,029	24,516
Cash and cash equivalents, beginning of year	13,491	52,520	28,004
Cash and cash equivalents, end of year	11,889	13,491	52,520
Supplemental disclosure of cash flow information	'	'	'
Cash (paid) received for interest	-5,108	-5,098	-2
Cash (paid) received for taxes, net of refunds	4,132	-3,456	4,601
Purchase of equipment included in accounts payable	($1,557)	($4,641)	($4,760)

Consolidated_Statements_Of_Sto

Consolidated Statements Of Stockholders' Equity (USD $)	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member]
In Thousands, except Share data, unless otherwise specified
Balance at Dec. 31, 2010	$116,469	$53	$158,372	($161,186)	($812)	$120,042
Balance, (in shares) at Dec. 31, 2010	'	53,316,280	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'
Net income	33,220	'	'	'	'	33,220
Payment of dividends	-21,429	'	'	'	'	-21,429
Exercise of stock options, stock appreciation rights and restricted stock units (in shares)	'	262,428	'	'	'	'
Exercise of stock options, stock appreciation rights and restricted stock units	2,041	1	2,040	'	'	'
Surrender of shares upon restricted stock vesting and exercise of stock appreciation rights	-5,040	'	'	-5,040	'	'
Tax impact of exercise of equity-based compensation	193	'	193	'	'	'
Stock-based compensation	14,884	'	14,796	'	'	88
Restricted stock grants (in shares)	'	502,426	'	'	'	'
Restricted stock cancellations (in shares)	'	-121,602	'	'	'	'
Other comprehensive income (loss)	-336	'	'	'	-336	'
Balance at Dec. 31, 2011	140,002	54	175,401	-166,226	-1,148	131,921
Balance, (in shares) at Dec. 31, 2011	'	53,959,532	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'
Net income	6,583	'	'	'	'	6,583
Payment of dividends	-21,731	'	'	'	'	-21,731
Exercise of stock options, stock appreciation rights and restricted stock units (in shares)	'	355,180	'	'	'	'
Exercise of stock options, stock appreciation rights and restricted stock units	3,146	0	3,146	'	'	'
Surrender of shares upon restricted stock vesting and exercise of stock appreciation rights	-4,672	'	'	-4,672	'	'
Tax impact of exercise of equity-based compensation	81	'	81	'	'	'
Stock-based compensation	19,240	'	19,151	'	'	89
Equity-based awards assumed in business combination	5,859	'	5,859	'	'	'
Restricted stock grants (in shares)	'	687,652	'	'	'	'
Restricted stock grants	1	1	'	'	'	'
Restricted stock cancellations (in shares)	'	-142,760	'	'	'	'
Other comprehensive income (loss)	-825	'	'	'	-825	'
Balance at Dec. 31, 2012	147,684	55	203,638	-170,898	-1,973	116,862
Balance, (in shares) at Dec. 31, 2012	'	54,859,604	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'
Net income	30,472	'	'	'	'	30,472
Payment of dividends	-22,081	'	'	'	'	-22,081
Exercise of stock options, stock appreciation rights and restricted stock units (in shares)	'	609,500	'	'	'	'
Exercise of stock options, stock appreciation rights and restricted stock units	385	'	385	'	'	'
Surrender of shares upon restricted stock vesting and exercise of stock appreciation rights	-12,390	'	'	-12,390	'	'
Tax impact of exercise of equity-based compensation	-25	'	-25	'	'	'
Stock-based compensation	16,910	'	16,765	'	'	145
Restricted stock grants (in shares)	'	458,462	'	'	'	'
Restricted stock grants	1	1	'	'	'	'
Restricted stock cancellations (in shares)	'	-227,749	'	'	'	'
Other comprehensive income (loss)	588	'	'	'	588	'
Balance at Dec. 31, 2013	$161,544	$56	$220,763	($183,288)	($1,385)	$125,398
Balance, (in shares) at Dec. 31, 2013	'	55,699,817	'	'	'	'

Consolidated_Statements_Of_Sto1

Consolidated Statements Of Stockholders' Equity (Parenthetical)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Stockholders' Equity [Abstract]	'	'	'
Surrender of shares upon restricted stock vesting and exercise of stock appreciation rights	363,731	189,547	176,942

Organization_Notes

Organization (Notes)	12 Months Ended
	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Organization	'
	Organization
	We provide cloud-based and on-premise software solutions and related services designed specifically for nonprofit organizations. Our products and services enable nonprofit organizations to increase donations, reduce fundraising costs, improve communications with constituents, manage their finances and optimize internal operations. As of December 31, 2013, we had more than 29,000 active customers distributed across multiple verticals within the nonprofit market including education, foundations, health and human services, religion, arts and cultural, public and societal benefits, environment and animal welfare as well as international foreign affairs.

Significant_Accounting_Policie

Significant Accounting Policies (Notes)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Summary Of Significant Accounting Policies	'
	Summary of significant accounting policies
	Basis of presentation
	The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (GAAP). In order to provide comparability between periods presented, amortization of software development costs and amortization of deferred financing costs have been broken out separately from other non-cash adjustments in the previously reported consolidated statements of cash flows to conform to the consolidated statement of cash flow presentation of the current period. After this change in presentation, amounts related to the amortization of software development costs are included in depreciation and amortization and amounts related to the amortization of deferred financing costs are presented separately within cash flows from operating activities. Similarly, restructuring costs have been broken out separately from general and administrative expense in the previously reported consolidated statements of comprehensive income to conform to the consolidated statement of comprehensive income presentation of the current period. After this change in presentation, restructuring costs are presented separately within operating expenses.
	Basis of consolidation
	The consolidated financial statements include the accounts of Blackbaud, Inc. and its wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation.
	Use of estimates
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported amounts of revenues and expenses during the reporting periods. On an ongoing basis, we reconsider and evaluate our estimates and assumptions, including those that impact revenue recognition, long-lived and intangible assets and goodwill, stock-based compensation, the provision for income taxes, capitalization of software development costs, our allowance for sales returns and doubtful accounts, deferred sales commissions and professional services costs, valuation of derivative instruments, accounting for business combinations and loss contingencies. Changes in the facts or circumstances underlying these estimates could result in material changes and actual results could materially differ from these estimates.
	Revenue recognition
	Our revenue is primarily generated from the following sources: (i) charging for the use of our software products in a hosted environment; (ii) selling perpetual licenses of our software products; (iii) providing professional services including implementation, training, consulting, analytic, hosting and other services; and (iv) providing software maintenance and support services.
	We recognize revenue when all of the following conditions are met:
	•Persuasive evidence of an arrangement exists;
	•The products or services have been delivered;
	•The fee is fixed or determinable; and
	•Collection of the resulting receivable is probable.
	Determining whether and when these criteria have been met can require significant judgment and estimates. We deem acceptance of an agreement to be evidence of an arrangement. Delivery of our services occurs when the services have been performed. Delivery of our products occurs when the product is shipped or transmitted, and title and risk of loss have transferred to the customers. Our typical agreements do not include customer acceptance provisions; however, if acceptance provisions are provided, delivery is deemed to occur upon acceptance. We consider the fee to be fixed or determinable unless the fee is subject to refund or adjustment or is not payable within our standard payment terms. Payment terms greater than 90 days are considered to be beyond our customary payment terms. Collection is deemed probable if we expect that the customer will be able to pay amounts under the arrangement as they become due. If we determine that collection is not probable, we defer revenue recognition until collection. Revenue is recognized net of sales returns and allowances.
	We follow guidance provided in ASC 605-45, Principal Agent Considerations, which states that determining whether a company should recognize revenue based on the gross amount billed to a customer or the net amount retained is a matter of judgment that depends on the facts and circumstances of the arrangement and that certain factors should be considered in the evaluation.
	Subscriptions
	We provide hosting services to customers who have purchased perpetual rights to certain of our software products (hosting services). Revenue from hosting services, as well as data enrichment services, data management services and online training programs, is recognized ratably beginning on the activation date over the term of the agreement, which generally ranges from one to three years. Any related set-up fees are recognized ratably over the estimated period that the customer benefits from the related hosting service. The estimated period of benefit is evaluated on an annual basis using historical customer retention information by product or service.
	We make certain of our software products available for use in hosted application arrangements without licensing perpetual rights to the software (hosted applications). Revenue from hosted applications is recognized ratably beginning on the activation date over the term of the agreement, which generally ranges from one to three years. Any revenue related to upfront activation, set-up or implementation fees is recognized ratably over the estimated period that the customer benefits from the related hosted application. Direct and incremental costs relating to activation, set-up and implementation for hosted applications are capitalized until the hosted application is deployed and in use, and then expensed over the estimated period that the customer benefits from the related hosted application.
	For arrangements that have multiple elements and do not include software licenses, we allocate arrangement consideration at the inception of the arrangement to those elements that qualify as separate units of accounting. The arrangement consideration is allocated to the separate units of accounting based on relative selling price method in accordance with the selling price hierarchy, which includes: (i) vendor specific objective evidence (VSOE) of fair value if available; (ii) third-party evidence (TPE) if VSOE is not available; and (iii) best estimate of selling price (BESP) if neither VSOE nor TPE is available. In general, we use VSOE to allocate the selling price to subscription and service deliverables.
	We offer certain payment processing services with the assistance of third-party vendors. When we are the primary obligor in a transaction, have latitude in establishing prices and are the party determining the service specifications or have several but not all of these indicators, we record the revenue and cost on a gross basis. Otherwise, we record revenue associated with the related subscribers on a net basis, netting the cost of revenue associated with the service against the gross amount billed the customer and record the net amount as revenue.
	Revenue from transaction processing services is recognized when the service is provided and the amounts are determinable. Revenue directly associated with processing donations for customers are included in subscriptions revenue.
	License fees
	We sell perpetual software licenses with maintenance, varying levels of professional services and, in certain instances, with hosting services. We allocate revenue to each of the elements in these arrangements using the residual method under which we first allocate revenue to the undelivered elements, typically the non-software license components, based on VSOE of fair value of the various elements. We determine VSOE of fair value of the various elements using different methods. VSOE of fair value for maintenance services associated with software licenses is based upon renewal rates stated in the agreements with customers, which demonstrate a consistent relationship of maintenance pricing as a percentage of the contractual license fee. VSOE of fair value of professional services and other products and services is based on the average selling price of these same products and services to other customers when sold on a stand-alone basis. Any remaining revenue is allocated to the delivered elements which is normally the software license in the arrangement.
	When a software license is sold with software customization services, generally the services are to provide customer support for assistance in creating special reports and other enhancements that will assist with efforts to improve operational efficiency and/or to support business process improvements. These services are generally not essential to the functionality of the software. However, when software customization services are considered essential to the functionality of the software, we recognize revenue for both the software license and the services using the percentage-of-completion method.
	Services
	We generally bill consulting, installation and implementation services based on hourly rates plus reimbursable travel-related expenses. Revenue is recognized for these services over the period the services are performed.
	We recognize analytic services revenue from donor prospect research engagements, the sale of lists of potential donors, benchmarking studies and data modeling service engagements upon delivery. In arrangements where we provide customers the right to updates to the lists during the contract period, revenue is recognized ratably over the contract period.
	We sell training at a fixed rate for each specific class at a per attendee price or at a packaged price for several attendees, and recognize the related revenue upon the customer attending and completing training. Additionally, we sell fixed-rate programs, which permit customers to attend unlimited training over a specified contract period, typically one year, subject to certain restrictions, and revenue is recognized ratably over the contract period.
	Maintenance
	We recognize revenue from maintenance services ratably over the contract term, typically one year. Maintenance contracts are at rates that vary according to the level of the maintenance program and are generally renewable annually. Maintenance contracts may also include the right to unspecified product upgrades on an if-and-when available basis. Certain support services are sold in prepaid units of time and recognized as revenue upon their usage.
	Deferred revenue
	To the extent that our customers are billed for the above-described services in advance of delivery, we record such amounts in deferred revenue.
	Fair value measurements
	We measure certain financial assets and liabilities at fair value on a recurring basis, including derivative instruments. Fair value is defined as the exchange price that would be received upon purchase of an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants at the measurement date. We use a three-tier fair value hierarchy to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows:
	•	Level 1 - Quoted prices for identical assets or liabilities in active markets;
	•	Level 2 - Quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets in markets that are not active, and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets; and
	•	Level 3 - Valuations derived from valuation techniques in which one or more significant inputs are unobservable.
	Our financial assets and liabilities are classified in their entirety within the hierarchy based on the lowest level of input that is significant to fair value measurement. Changes to a financial assets' or liabilities' level within the fair value hierarchy are determined as of the end of a reporting period. All methods of assessing fair value result in a general approximation of value, and such value may never actually be realized.
	Financial liabilities measured at fair value on a recurring basis consisted of the following, as of:
			Fair value measurement using
	(in thousands)		Level 1				Level 2			Level 3			Total
	Fair value as of December 31, 2013
	Financial Liabilities:
	Derivative instruments(1)		—				427			—			427
	Total financial liabilities		$	—			$	427		$	—		$	427
	Fair value as of December 31, 2012
	Financial liabilities:
	Derivative instruments(1)		—				1,296			—			1,296
	Total financial liabilities		$	—			$	1,296		$	—		$	1,296
	-1	The fair value of our interest rate swaps was based on model-driven valuations using LIBOR rates, which are observable at commonly quoted intervals. Accordingly, our interest rate swaps are classified within Level 2 of the fair value hierarchy.
	We believe the carrying amounts of our cash and cash equivalents, donor restricted cash, accounts receivable, trade accounts payable, accrued expenses and other current liabilities and donations payable approximate their fair values at December 31, 2013 and 2012, due to the immediate or short-term maturity of these instruments.
	Financial assets and liabilities that are measured at fair value on a non-recurring basis include intangible assets, goodwill and our credit facility. Intangible assets and goodwill are recognized at fair value in the period in which an acquisition is completed, or when they are considered to be impaired. We believe the carrying amount of our credit facility approximates its fair value at December 31, 2013 and 2012, as the debt bears interest rates that approximate market. As LIBOR rates are observable at commonly quoted intervals, it is classified within Level 2 of the fair value hierarchy. There were no non-recurring fair value adjustments recorded during the years ended December 31, 2013 or 2012.
	Derivative instruments
	We use derivative instruments to manage interest rate risk. We view derivative instruments as risk management tools and do not use them for trading or speculative purposes. Our policy requires that derivatives used for hedging purposes be designated and effective as a hedge of the identified risk exposure at the inception of the contract. Accordingly, changes in fair value of the derivative contract must be highly correlated with changes in the fair value of the underlying hedged item at inception of the hedge and over the life of the hedge contract.
	We record all derivative instruments on our consolidated balance sheets at fair value. If the derivative is designated as a fair value hedge, the changes in the fair value of the derivative and of the hedged item attributable to the hedged risk are recognized currently in earnings. If the derivative is designated as a cash flow hedge, the effective portions of the changes in fair value of the derivative are recorded in other comprehensive income and reclassified to earnings in a manner that matches the timing of the earnings impact of the hedged transactions. Ineffective portions of the changes in the fair value of cash flow hedges are recognized currently in earnings. See Note 10 for further discussion of our derivative instruments.
	Reimbursable travel expense
	We expense reimbursable travel costs as incurred and include them in cost of other revenue. The reimbursement of these costs by our customers is included in other revenue.
	Sales taxes
	We present sales taxes and other taxes collected from customers and remitted to governmental authorities on a net basis and, as such, exclude them from revenues.
	Shipping and handling
	We expense shipping and handling costs as incurred and include them in cost of other revenue. The reimbursement of these costs by our customers is included in other revenue.
	Cash and cash equivalents
We consider all highly liquid investments purchased with a maturity of three months or less to be cash equivalents.
Donor restricted cash and donations payable
Restricted cash consists of donations collected by us and payable to our customers, net of the associated transaction fees earned. Monies associated with donations payable are segregated in a separate bank account and used exclusively for the payment of donations payable. This usage restriction is either legally or internally imposed and reflects our intention with regard to such deposits.
Concentration of credit risk
Financial instruments that potentially subject us to concentrations of credit risk consist of cash and cash equivalents, donor restricted cash and accounts receivable. Our cash and cash equivalents and donor restricted cash are placed with high credit-quality financial institutions. Our accounts receivable are derived from sales to customers who primarily operate in the nonprofit sector. With respect to accounts receivable, we perform ongoing evaluations of our customers and maintain an allowance for doubtful accounts based on historical experience and our expectations of future losses. As of and for the years ended December 31, 2013, 2012 and 2011, there were no significant concentrations with respect to our consolidated revenues or accounts receivable.
Property and equipment
We record property and equipment at cost and depreciate them over their estimated useful lives using the straight-line method. Property and equipment subject to capital leases are depreciated over the lesser of the term of the lease or the estimated useful life of the asset. Upon retirement or sale, the cost of assets disposed of and the related accumulated depreciation are removed from the accounts and any resulting gain or loss is credited or charged to income. Repair and maintenance costs are expensed as incurred.
Construction-in-progress represents purchases of computer software and hardware associated with new internal system implementation projects which had not been placed in service at the respective balance sheet dates. We transferred these assets to the applicable property category on the date they are placed in service. There was no capitalized interest applicable to construction-in-progress for the years ended December 31, 2013 and 2012.
Business combinations
We are required to allocate the purchase price of acquired companies to the tangible and intangible assets acquired and liabilities assumed at the acquisition date based upon their estimated fair values. Goodwill as of the acquisition date represents the excess of the purchase consideration of an acquired business over the fair value of the underlying net tangible and intangible assets acquired and liabilities assumed. This allocation and valuation require management to make significant estimates and assumptions, especially with respect to long-lived and intangible assets.
Critical estimates in valuing intangible assets include, but are not limited to, estimates about: future expected cash flows from customer contracts, proprietary technology and non-compete agreements; the acquired company's brand awareness and market position, assumptions about the period of time the brand will continue to be valuable; as well as expected costs to develop the in-process research and development into commercially viable products and estimated cash flows from the projects when completed, and discount rates. Our estimates of fair value are based upon assumptions we believe to be reasonable, but which are inherently uncertain and unpredictable. Assumptions may be incomplete or inaccurate, and unanticipated events and circumstances may occur.
Goodwill
Goodwill represents the purchase price in excess of the net amount assigned to assets acquired and liabilities assumed by us in a business combination. Goodwill is allocated to reporting units and tested annually for impairment. Our reporting units are our four reportable segments and our payment processing operations. We will also test goodwill for impairment between annual impairment tests if indicators of potential impairment exist. We first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. Significant judgment is required in the assessment of qualitative factors including but not limited to an evaluation of macroeconomic conditions as they relate to our business, industry and market trends, as well as the overall future financial performance of our reporting units and future opportunities in the markets in which they operate. To the extent the qualitative factors indicate that there is more than 50% likelihood that the fair value is less than the carrying amount, we compare the fair value of the reporting unit with its carrying amount. If the carrying amount exceeds its fair value, impairment is indicated and we will recognize an impairment loss in an amount equal to the difference. As a result of our 2013 qualitative assessments of goodwill assigned to each of our reporting units, we concluded it was not more likely than not that the fair value of each reporting unit was less than its carrying value, respectively. There was no impairment of goodwill during 2013, 2012 or 2011.
Intangible assets
We amortize finite-lived intangible assets over their estimated useful lives as follows.
		Basis of amortization		Amortization
				period
				(in years)
Customer relationships		Straight-line and accelerated (1)		15-Apr
Marketing assets		Straight-line		8-Jan
Acquired software and technology		Straight-line		10-Jan
Non-compete agreements		Straight-line		5-Jan
Database		Straight-line		8
-1	Certain of the customer relationships are amortized on an accelerated basis.
Indefinite-lived intangible assets consist of tradenames. We evaluate the estimated useful lives and the potential for impairment of finite and indefinite-lived intangible assets on an annual basis, or more frequently if events or circumstances indicate revised estimates of useful lives may be appropriate or that the carrying amount may not be recoverable. If the carrying amount is no longer recoverable based upon the undiscounted cash flows of the asset, the amount of impairment is the difference between the carrying amount and the fair value of the asset. Substantially all of our intangible assets were acquired in business combinations. There was no impairment of intangible assets during 2013, 2012 or 2011.
Cost method investments
Cost method investments consist of investments in privately held companies where we do not have the ability to exercise significant influence or have control over the investee. We record these investments at cost and periodically test them for other-than-temporary impairment. During the years ended December 31, 2012 and 2011, we determined that our cost method investment had other-than-temporary impairment based on the projected liquidity of the investment. We used the income approach to determine the fair value of the investment in determining the impairment. An impairment loss of $0.2 million and $1.8 million was recorded in income from operations for the years ended December 31, 2012 and 2011, respectively. There were no remaining cost method investments at December 31, 2013 and 2012.
Deferred financing costs
Deferred financing costs included in other assets represent the direct costs of entering into both our revolving credit facility in June 2011 and our amended and restated credit facility in February 2012. These costs are amortized as interest expense using the effective interest method. The deferred financing fees are being amortized over the term of the credit facility.
Stock-based compensation
We measure stock-based compensation cost at the grant date based on the fair value of the award and recognize it as expense over the requisite service period, which is the vesting period. We determine the fair value of stock options and stock appreciation rights using a Black-Scholes option pricing model, which requires us to use significant judgment to make estimates regarding the life of the award, volatility of our stock price, the risk-free interest rate and the dividend yield of our stock over the life of the award. We determine the fair value of awards that contain market conditions using a Monte Carlo simulation model. Changes to these estimates would result in different fair values of awards.
We estimate the number of awards that will be forfeited and recognize expense only for those awards that we expect will ultimately vest. Significant judgment is required in determining the adjustment to compensation expense for estimated forfeitures. Compensation expense in a period could be impacted, favorably or unfavorably, by differences between estimated and actual forfeitures.
Income taxes
We make estimates and judgments in accounting for income taxes. The calculation of income tax provision requires estimates due to transactions, credits and calculations where the ultimate tax determination is uncertain. Uncertainties arise as a consequence of the actual source of taxable income between domestic and foreign locations, the outcome of tax audits and the ultimate utilization of tax credits. To the extent actual results differ from estimated amounts recorded, such differences will impact the income tax provision in the period in which the determination is made.
We make estimates in determining tax assets and liabilities, which arise from differences in the timing of recognition of revenue and expense for tax and financial statement purposes. We record valuation allowances to reduce our deferred tax assets to the amount expected to be realized. In assessing the adequacy of a recorded valuation allowance significant judgment is required. We consider all positive and negative evidence and a variety of factors including the scheduled reversal of deferred tax liabilities, historical and projected future taxable income, and prudent and feasible tax planning strategies. If we determine there is less than a 50% likelihood that we will be able to use a deferred tax asset in the future in excess of its net carrying value, then an adjustment to the deferred tax asset valuation allowance is made to reduce income tax expense, thereby increasing net income in the period such determination was made.
We measure and recognize uncertain tax positions. To recognize such positions we must first determine if it is more likely than not that the position will be sustained on audit. We must then measure the benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement. Significant judgment is required in the identification and measurement of uncertain tax positions.
Foreign currency
Net assets recorded in a foreign currency are translated at the exchange rate on the balance sheet date. Revenue and expense items are translated at the average exchange rate for the year. The resulting translation adjustments are recorded in accumulated other comprehensive income.
Gains and losses resulting from foreign currency transactions denominated in currency other than the functional currency are recorded at the approximate rate of exchange at the transaction date in other expense, net. For each of the years ended December 31, 2013 and 2012, we recorded net foreign currency losses of $0.4 million. For the year ended December 31, 2011, we recorded net a foreign currency gain of $0.3 million.
Research and development
Research and development costs are expensed as incurred. These costs include human resource costs, stock-based compensation expense, third-party contractor expenses, software development tools and certain other expenses related to researching and developing new products, and allocated depreciation, facilities and IT support costs.
Software development costs
We incur certain costs associated with the development of internal-use software and software developed related to our cloud-based solutions, which are accounted for as internal-use software. The costs incurred in the preliminary stages of internal-use software development are expensed as incurred. Once an application has reached the development stage, internal and external costs, if direct and incremental, are capitalized until the software is substantially complete and ready for its intended use. Capitalization ceases upon completion of all substantial testing. We also capitalize costs related to specific upgrades and enhancements when it is probable the expenditures will result in additional functionality. Capitalized costs for internal-use software are recorded as part of computer software costs within property and equipment. Capitalized costs for software developed for our cloud-based solutions are recorded to other assets. Internal-use software is amortized on a straight line basis over its estimated useful life, which is generally three years.
Although our development efforts are primarily focused on our cloud-based solutions, we also incur cost in connection with the development of certain of our software products licensed to customers on a perpetual basis, which are accounted for as costs of software to be sold, leased or otherwise marketed. Costs for the development of software to be sold are expensed as incurred until technological feasibility has been established, at which time such costs are capitalized until the product is available for general release to customers. Capitalized software development costs include direct labor costs and fringe benefit costs attributed to programmers, software engineers and quality control teams working on products after they reach technological feasibility but before they are generally available to customers for sale. Capitalized software development costs are typically amortized over the estimated product life on a straight-line basis, which is generally three years.
Management evaluates the useful lives of these assets on an annual basis and tests for impairment whenever events or changes in circumstances occur that could impact the recoverability of these assets. There were no impairments during the years ended December 31, 2013, 2012 or 2011. At December 31, 2013 and 2012, software development costs, net of accumulated amortization, were $4.2 million and $2.0 million, respectively, and are included in other assets on the consolidated balance sheets. Amortization expense related to software development costs was $1.0 million, $0.4 million and $0.1 million for the years ended December 31, 2013, 2012 and 2011, respectively, and is included in both cost of license fees and cost of subscriptions.
Sales returns and allowance for doubtful accounts
We maintain a reserve for returns and credits which is estimated based on several factors including historical experience, known credits yet to be issued, the aging of customer accounts and the nature of service level commitments. A considerable amount of judgment is required in assessing these factors. Provisions for sales returns and credits are charged against the related revenue items.
Accounts receivable are recorded at original invoice amounts less an allowance for doubtful accounts, an amount we estimate to be sufficient to provide adequate protection against losses resulting from extending credit to our customers. In judging the adequacy of the allowance for doubtful accounts, we consider multiple factors including historical bad debt experience, the general economic environment, the need for specific customer reserves and the aging of our receivables. A considerable amount of judgment is required in assessing these factors and if any receivables were to deteriorate, an additional provision for doubtful accounts could be required. Accounts are written off after all means of collection are exhausted and recovery is considered remote. Provisions for doubtful accounts are recorded in general and administrative expense.
Below is a summary of the changes in our allowance for sales returns.
Years ended December 31,		Balance at beginning of year				Provision/adjustment			Write-off			Balance at end of year
(in thousands)
2013		$	7,730			$	4,132		$	(6,704	)	$	5,158
2012		3,652				8,914			(4,836		)	7,730
2011		2,263				5,619			(4,230		)	3,652
Below is a summary of the changes in our allowance for doubtful accounts.
Years ended December 31,		Balance at beginning of year				Provision/adjustment			Write-off			Balance at end of year
(in thousands)
2013		$	816			$	775		$	(1,136	)	$	455
2012		261				976			(421		)	816
2011		424				27			(190		)	261
Sales commissions
We pay sales commissions at the time contracts with customers are signed or shortly thereafter, depending on the size and duration of the sales contract. To the extent that these commissions relate to revenue not yet recognized, the amounts are recorded as deferred sales commission costs. Subsequently, the commissions are recognized as expense as the revenue is recognized.
Below is a summary of the changes in our deferred sales commission costs included in prepaid expenses and other current assets.
Years ended December 31,		Balance at beginning of year				Additions			Expense			Balance at end of year
(in thousands)
2013		$	18,142			$	20,487		$	(18,541	)	$	20,088
2012		16,452				19,693			(18,003		)	18,142
2011		11,548				18,415			(13,511		)	16,452
Advertising costs
We expense advertising costs as incurred, which was $1.1 million, $1.2 million and $1.1 million for the years ended December 31, 2013, 2012 and 2011, respectively.
Restructuring costs
Restructuring costs include charges for the costs of exit or disposal activities. The liability for costs associated with exit or disposal activities is measured initially at fair value and only recognized when the liability is incurred.
Impairment of long-lived assets
We review long-lived assets for impairment when events change or circumstances indicate the carrying amount may not be recoverable. Events or changes in circumstances that indicate the carrying amount may not be recoverable include, but are not limited to, a significant decrease in the market value of the business or asset acquired, a significant adverse change in the extent or manner in which the business or asset acquired is used or significant adverse change in the business climate. If such events or changes in circumstances are present, the undiscounted cash flow method is used to determine whether the asset is impaired. No impairment of long-lived assets resulted in 2013, 2012 or 2011.
Contingencies
We are subject to the possibility of various loss contingencies in the normal course of business. We record an accrual for a contingency when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Often these issues are subject to substantial uncertainties and, therefore, the probability of loss and the estimation of damages are difficult to ascertain. These assessments can involve a series of complex judgments about future events and can rely heavily on estimates and assumptions that have been deemed reasonable by us. Although we believe we have substantial defenses in these matters, we could incur judgments or enter into settlements of claims that could have a material adverse effect on our consolidated financial position, results of operations or cash flows in any particular period.
Earnings per share
We compute basic earnings per share by dividing net income available to common stockholders by the weighted average number of common shares outstanding. Diluted earnings per share is computed by dividing net income available to common stockholders by the weighted average number of common shares and dilutive potential common shares then outstanding. Diluted earnings per share reflect the assumed exercise, settlement and vesting of all dilutive securities using the "treasury stock method" when the effect is not anti-dilutive. Potentially dilutive securities consist of shares issuable upon the exercise of stock options, settlement of stock appreciation rights and vesting of restricted stock awards and units.
The following table sets forth the computation of basic and diluted earnings per share:
		Year ended December 31,
(in thousands, except share and per share amounts)		2013				2012			2011
Numerator:
Net income		$	30,472			$	6,583		$	33,220
Denominator:
Weighted average common shares		44,684,812				44,145,535			43,522,563
Add effect of dilutive securities:
Employee stock-based compensation		736,328				546,310			626,491
Weighted average common shares assuming dilution		45,421,140				44,691,845			44,149,054
Earnings per share:
Basic		$	0.68			$	0.15		$	0.76
Diluted		$	0.67			$	0.15		$	0.75
The following shares underlying stock-based awards were not included in diluted earnings per share because their inclusion would have been anti-dilutive:
		Year ended December 31,
		2013			2012			2011
Shares excluded from calculations of diluted EPS		116,438			434,050			422,418
Recently adopted accounting pronouncements
Effective January 1, 2013, we adopted ASU 2013-02, Comprehensive Income (Topic 220), Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income, which requires that entities provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, entities are required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under GAAP to be reclassified to net income in its entirety in the same reporting period. For other amounts that are not required under GAAP to be reclassified in their entirety to net income, entities are required to cross-reference to other disclosures required under GAAP that provide additional detail about those amounts. The adoption of ASU 2013-02 did not have a material impact on our consolidated financial statements. We have presented the amounts reclassified out of accumulated other comprehensive income by component in Note 10 and Note 14 to our consolidated financial statements.
Effective January 1, 2013, we adopted ASU 2012-02, Intangibles - Goodwill and Other (Topic 350), Testing Indefinite-Lived Intangible Assets for Impairment, which simplifies how entities test indefinite-lived intangible assets for impairment. ASU 2012-02 permits an entity to first assess qualitative factors to determine whether it is more likely than not that an indefinite-lived intangible asset is impaired as a basis for determining whether it is necessary to perform the quantitative impairment test currently required by ASC Topic 350-30 on general intangibles other than goodwill. The adoption of ASU 2012-02 did not have a material impact on our consolidated financial statements.
Recently issued accounting pronouncements
In July 2013, the FASB issued ASU 2013-11, Income Taxes (Topic 740), Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. Under ASU 2013-11, an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward or a similar tax loss, or a tax credit carryforward, except as follows. To the extent a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position or the tax law of the applicable jurisdiction does not require the entity to use, and the entity does not intend to use, the deferred tax asset for such purpose, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. ASU 2013-11 is effective for fiscal years and interim periods within those years, beginning after December 15, 2013. Early adoption is permitted. We do not anticipate any material impact from the adoption of ASU 2013-11.

Business_Combinations_Notes

Business Combinations (Notes)	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Business Combinations	'
	Business combinations
	2012 Acquisitions
	Convio
	In May 2012, we completed our acquisition of Convio, Inc. (Convio), for approximately $329.8 million in cash consideration and the assumption of unvested equity awards valued at approximately $5.9 million, for a total of $335.7 million. Convio was a leading provider of on-demand constituent engagement solutions that enabled nonprofit organizations to more effectively raise funds, advocate for change and cultivate relationships. The acquisition of Convio expands our subscription and online offerings and accelerates our evolution to a subscription-based revenue model. As a result of the acquisition, Convio has become a wholly-owned subsidiary of ours. The results of operations of Convio are included in our consolidated financial statements from the date of acquisition. Because we have integrated a substantial amount of the Convio operations and have made product rationalization decisions, it is not possible to determine the revenue and operating costs attributable solely to the acquired business. During the year ended December 31, 2012, we incurred $6.4 million of acquisition-related costs associated with the acquisition of Convio, which were recorded in general and administrative expense.
	We financed the acquisition of Convio through cash on hand and borrowings of $312.0 million under our credit facility. In connection with closing the Convio acquisition, we designated Convio as a material domestic subsidiary under our credit facility. As a material domestic subsidiary, Convio guarantees amounts outstanding under the credit facility and pledges certain stock of its subsidiaries.
	The following table summarizes the allocation of the purchase price based on the estimated fair value of the assets acquired and the liabilities assumed:
	(in thousands)
	Net working capital, excluding deferred revenue	$	57,062
	Property and equipment	6,591
	Other long term assets	75
	Deferred revenue	(7,847		)
	Deferred tax liability	(33,181		)
	Intangible assets and liabilities	139,650
	Goodwill	173,324
		$	335,674
	The estimated fair value of accounts receivable acquired approximates the contractual value of $12.8 million. The goodwill recognized is attributable primarily to the assembled workforce of Convio and the opportunities for expected synergies. None of the goodwill arising in the acquisition is deductible for income tax purposes. The estimated amount of goodwill assigned to the Enterprise Customer Business Unit and the General Markets Business Unit reporting segments was $124.8 million and $48.5 million, respectively.
	The acquisition resulted in the identification of the following identifiable intangible assets:
		Intangible assets acquired			Weighted average amortization period
		(in thousands)			(in years)
	Customer relationships	$	53,000		15
	Marketing assets	7,800			7
	Acquired technology	69,000			8
	In-process research and development	9,100			7
	Non-compete agreements	1,440			2
	Unfavorable leasehold interests	(690		)	7
		$	139,650
	The fair value of the intangible assets was based on the income approach, cost approach, relief of royalty rate method and excess earnings methods. Customer relationships are amortized on an accelerated basis. Marketing assets, acquired technology and non-compete agreements are amortized on a straight-line basis. In-process research and development related to proprietary technology was placed into service subsequent to the time of acquisition and is amortized on a straight-line basis since the time of being placed into service over a weighted average amortization period of seven years.
	The following unaudited pro forma condensed consolidated results of operations assume that the acquisition of Convio occurred on January 1, 2011. This unaudited pro forma financial information does not reflect any adjustments for anticipated synergies resulting from the acquisition and should not be relied upon as being indicative of the historical results that would have been attained had the transaction been consummated as of January 1, 2011, or of the results that may occur in the future.
		Year ended December 31,
	(in thousands, except per share amounts)	2012			2011
	Revenue	$	476,887		$	451,221
	Net income	$	116		$	27,697
	Basic earnings per share	$	—		$	0.64
	Diluted earnings per share	$	—		$	0.63
	2011 Acquisitions
	During the year ended December 31, 2011, we acquired two entities for total consideration of $24.2 million, all of which was paid in cash. The results of operations of acquired entities have been included in our consolidated financial statements from the date of acquisition. Pro forma results of operations have not been presented because the effects of these business combinations, individually and in the aggregate, were not material to our consolidated results of operations. We recorded the purchase price allocation based on the estimated fair value of the assets acquired and liabilities assumed. None of the goodwill arising from the acquisitions completed in 2011 is deductible for income tax purposes.

Property_And_Equipment_Notes

Property And Equipment (Notes)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property, Plant and Equipment Disclosure [Text Block]	'
	Property and equipment
	Property and equipment consisted of the following, as of:
		Estimated	December 31,
		useful life
	(in thousands)	(years)	2013			2012
	Equipment	5-Mar	$	3,710		$	2,430
	Computer hardware	5-Mar	59,394			56,969
	Computer software	5-Mar	19,989			17,540
	Construction in progress	-	93			1,854
	Furniture and fixtures	7-May	6,987			5,486
	Leasehold improvements	term of lease	11,375			5,104
	Total property and equipment		101,548			89,383
	Less: accumulated depreciation		(51,998		)	(40,320		)
	Property and equipment, net of depreciation		$	49,550		$	49,063
	Depreciation expense was $17.5 million, $14.5 million and $9.4 million for the years ended December 31, 2013, 2012 and 2011, respectively.
	Property and equipment, net of depreciation, under capital leases at December 31, 2013 and 2012 was not material.

Goodwill_And_Other_Intangible_

Goodwill And Other Intangible Assets	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets Disclosure [Text Block]	'
	Goodwill and other intangible assets
	The change in goodwill for each reportable segment during the year ended December 31, 2013, consisted of the following:
	(in thousands)	ECBU				GMBU				IBU			Target Analytics		Other		Total
	Balance at December 31, 2012	$	148,322			$	75,149			$	6,311		$	33,177	$	2,096	$	265,055
	Additions related to business combinations	—				—				344			—		—		344
	Adjustments related to prior year business combinations	(494		)		(193		)		—			—		—		(687		)
	Effect of foreign currency translation	—				—				(113		)	—		—		(113		)
	Balance at December 31, 2013	$	147,828			$	74,956			$	6,542		$	33,177	$	2,096	$	264,599
	We have no accumulated impairment losses as of December 31, 2013 and 2012. Additions to goodwill during the year ended December 31, 2013, related to an immaterial acquisition. Decreases were the result of adjustments to the allocation of the purchase price for the entity we acquired during the year ended December 31, 2012.
	We have recorded intangible assets acquired in various business combinations based on their fair values at the date of acquisition. The table below sets forth the balances of each class of intangible asset and related amortization as of:
			December 31,
	(in thousands)		2013				2012
	Finite-lived gross carrying amount
	Customer relationships		$	102,030			$	101,878
	Marketing assets		10,384				10,296
	Acquired software and technology		94,144				94,378
	Non-compete agreements		2,128				3,979
	Database		4,275				4,275
	Total finite-lived gross carrying amount		212,961				214,806
	Accumulated amortization
	Customer relationships		(33,442		)		(24,994		)
	Marketing assets		(4,529		)		(2,852		)
	Acquired software and technology		(27,671		)		(14,787		)
	Non-compete agreements		(1,739		)		(2,727		)
	Database		(3,332		)		(2,798		)
	Total accumulated amortization		(70,713		)		(48,158		)
	Indefinite-lived gross carrying amount
	Marketing assets		1,193				1,389
	Total intangible assets, net		$	143,441			$	168,037
	Changes to the gross carrying amounts of intangible asset classes during 2013 were related to an immaterial acquisition, the write-off of certain non-compete agreements that expired and the effect of foreign currency translation.
	Amortization expense
	Amortization expense related to finite-lived intangible assets acquired in business combinations is allocated to cost of revenue and operating expenses on the consolidated statements of comprehensive income based on the revenue stream to which the asset contributes. The following table summarizes amortization expense:
		Year ended December 31,
	(in thousands)	2013				2012				2011
	Included in cost of revenue:
	Cost of license fees	$	421			$	485			$	635
	Cost of subscriptions	18,578				11,969				3,341
	Cost of services	2,528				1,992				1,572
	Cost of maintenance	457				722				975
	Cost of other revenue	75				75				75
	Total included in cost of revenue	22,059				15,243				6,598
	Included in operating expenses	2,539				2,106				980
	Total	$	24,598			$	17,349			$	7,578
	The following table outlines the estimated future amortization expense for each of the next five years for our finite-lived intangible assets as of December 31, 2013:
	Year ended December 31,	Amortization expense
		(in thousands)
	2014	$	22,573
	2015	22,203
	2016	21,799
	2017	19,484
	2018	18,123
	Total	$	104,182

Prepaid_Expenses_And_Other_Ass

Prepaid Expenses And Other Assets (Notes)	12 Months Ended
	Dec. 31, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]	'
Prepaid Expenses And Other Assets	'
	Prepaid expenses and other assets
	Prepaid expenses and other assets consisted of the following as of:
	(in thousands)	December 31, 2013		December 31, 2012
	Deferred sales commissions	$	20,088	$	18,142
	Prepaid software maintenance	6,875		5,530
	Taxes, prepaid and receivable	1,112		7,398
	Deferred professional services costs	7,445		8,057
	Software development costs	4,172		1,994
	Other assets	9,674		9,312
	Total prepaid expenses and other assets	49,366		50,433
	Less: Long-term portion	19,251		9,844
	Total prepaid expenses and other current assets	$	30,115	$	40,589
	Prepaid expenses and other assets consisted of the following as of:
	(in thousands)	December 31, 2013		December 31, 2012
	Deferred sales commissions	$	20,088	$	18,142
	Prepaid software maintenance	6,875		5,530
	Taxes, prepaid and receivable	1,112		7,398
	Deferred professional services costs	7,445		8,057
	Software development costs	4,172		1,994
	Other assets	9,674		9,312
	Total prepaid expenses and other assets	49,366		50,433
	Less: Long-term portion	19,251		9,844
	Total prepaid expenses and other current assets	$	30,115	$	40,589

Accrued_Expenses_And_Other_Lia

Accrued Expenses And Other Liabilities (Notes)	12 Months Ended
	Dec. 31, 2013
Accrued Expenses And Other Current Liabilities [Abstract]	'
Accrued Expenses And Other Liabilities	'
	Accrued expenses and other liabilities
	Accrued expenses and other liabilities consisted of the following as of:
	(in thousands)	December 31, 2013		December 31, 2012
	Taxes payable	$	5,430	$	7,607
	Accrued commissions and salaries	7,127		5,905
	Accrued bonuses	9,258		11,966
	Customer credit balances	3,281		4,577
	Accrued software and maintenance	970		3,875
	Unrecognized tax benefit	3,698		3,846
	Other liabilities	17,334		13,501
	Total accrued expenses and other liabilities	47,098		51,277
	Less: Long-term portion	6,655		5,281
	Total accrued expenses and other current liabilities	$	40,443	$	45,996

Deferred_Revenue

Deferred Revenue	12 Months Ended
	Dec. 31, 2013
Deferred Revenue Disclosure [Abstract]	'
Deferred Revenue Disclosure [Text Block]	'
	Deferred revenue
	Deferred revenue consisted of the following as of:
	(in thousands)	31-Dec-13		31-Dec-12
	Maintenance	$	85,219	$	81,741
	Subscriptions	72,480		65,850
	Services	32,153		36,904
	License fees and other	722		523
	Total deferred revenue	190,574		185,018
	Less: Deferred revenue, net of current portion	9,099		11,119
	Deferred revenue, current portion	$	181,475	$	173,899

Debt_Notes

Debt (Notes)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Debt	'
	Debt
	Credit facility
	We have a five-year $325.0 million credit facility, which includes the following facilities: (i) a dollar and a designated currency revolving credit facility with sublimits for letters of credit and swingline loans, and (ii) a delayed draw term loan. The stock and limited liability company interests of certain subsidiaries are pledged as collateral for the credit facility which is guaranteed by our material domestic subsidiaries.
	Amounts borrowed under the dollar tranche revolving credit loans and delayed draw term loans under the credit facility bear interest at a rate per annum equal to, at our option, (a) Base Rate equal to the highest of (i) the prime rate, (ii) federal funds rate plus 0.50% and (iii) one month LIBOR plus 1%, in addition to a margin of 0.25% to 1.25%, or (b) LIBOR rate plus a margin of 1.25% to 2.25%. Swingline loans bear interest at a rate per annum equal to the Base Rate plus a margin of 0.25% to 1.25% or such other rate agreed to between the Swingline lender and us. Designated currency tranche revolving credit loans bear interest at a rate per annum equal to the LIBOR rate for the applicable currency plus a margin of 1.25% to 2.25%. The exact amount of any margin depends on the nature of the loan and our leverage ratio.
	We also pay a quarterly commitment fee on the unused portion of the revolving credit facility from 0.20% to 0.35% per annum, depending on our leverage ratio. At December 31, 2013, the commitment fee was 0.25%.
	The term loans under our credit facility require periodic principal payments. The balance of the term loans and any amounts drawn on the revolving credit loans are due upon maturity of the credit facility in February 2017. We evaluate the classification of our debt based on the required annual maturities of our credit facility.
	The credit facility includes financial covenants related to the consolidated leverage ratio and interest ratio, as well as restrictions on the maximum amount of annual capital expenditures, our ability to incur obligations with other financial institutions, our ability to declare and pay dividends and our ability to repurchase shares of our common stock. At December 31, 2013, we were in compliance with all debt covenants under the credit facility.
	The following table summarizes our debt balances and the related weighted average effective interest rates, which include our interest cost incurred and the effect of interest rate swap agreements.
		Debt balance at				Weighted average effective interest rate at
	(in thousands, except percentages)	December 31, 2013		December 31, 2012		December 31, 2013		December 31, 2012
	Credit facility:
	Revolving credit loans	$	70,408	$	123,000	1.95	%	2.68	%
	Term loans	82,500		92,500		2.39	%	3.14	%
	Total debt	152,908		215,500		2.14	%	2.88	%
	Less: Debt, current portion	17,158		10,000		2.39	%	3.14	%
	Debt, net of current portion	$	135,750	$	205,500	2.11	%	2.86	%
	As of December 31, 2013, the required annual maturities related to our credit facility were as follows:
	Year ending December 31,	Annual maturities
	(in thousands)
	2014	$	17,158
	2015	15,000
	2016	15,000
	2017	105,750
	Total required maturities	$	152,908
	Deferred financing costs
	In February 2012, we amended and restated our credit facility to increase our borrowing capacity. In connection with our amended and restated credit facility, we paid $2.4 million of financing costs. These costs together with a portion of the unamortized financing costs from our previous credit facility are being amortized over the term of the new facility. As of December 31, 2013 and December 31, 2012, deferred financing costs totaling $1.9 million and $2.5 million, respectively, are included in other assets on the consolidated balance sheets.

Derivative_Instruments

Derivative Instruments	12 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivatives and Fair Value [Text Block]	'
	Derivative instruments
	We use derivative instruments to manage interest rate risk. We have two interest rate swap agreements which effectively convert portions of our variable rate debt under our credit facility to a fixed rate for the terms of the swap agreements. The aggregate notional value of the swap agreements was $150.0 million with effective dates beginning in May 2012 through January 2017. We designated the swap agreements as cash flow hedges at the inception of the contracts.
	The fair values of our derivative instruments were as follows as of:
				Liability fair value at
	(in thousands)	Balance sheet location		December 31, 2013			31-Dec-12
	Derivative instruments designated as hedging instruments:
	Interest rate swaps, current portion	Accrued expenses and other current liabilities		$	46		$	—
	Interest rate swaps, long-term portion	Other liabilities		381			1,296
	Total derivative instruments designated as hedging instruments			$	427		$	1,296
	The effects of derivative instruments in cash flow hedging relationships were as follows:
		Loss recognized in accumulated other comprehensive loss as of				Location of loss reclassified from accumulated other comprehensive loss into income	Amount reclassified from accumulated other comprehensive loss into income
		31-Dec-13					Year ended December 31,
	(in thousands)						2013
	Interest rate swaps	$	427			Interest expense	$	794
							Year ended December 31,
		31-Dec-12					2012
	Interest rate swaps	$	1,296			Interest expense	$	466
	We recognize income tax expense or benefit within accumulated other comprehensive loss each reporting period based on the change in fair value of our derivative instruments. The income tax benefit recognized in accumulated other comprehensive loss decreased $(0.3) million during the year ended December 31, 2013. The income tax benefit recognized in accumulated other comprehensive loss was $0.5 million for the year ended December 31, 2012.

Commitments_And_Contingencies_

Commitments And Contingencies (Notes)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments And Contingencies	'
	Commitments and contingencies
	Leases
	We lease our headquarters facility under a 15-year lease agreement which was entered into in October 2008, and has two five-year renewal options. The current annual base rent of the lease is $4.0 million, payable in equal monthly installments. The base rent escalates annually at a rate equal to the change in the consumer price index, as defined in the agreement, but not to exceed 5.5% in any year.
	With our acquisition of Convio, we assumed a lease for office space in Austin, Texas which terminates on September 30, 2023, and has two five-year renewal options. Under the terms of the lease, we will increase our leased space by approximately 20,000 square feet on July 31, 2016. The current annual base rent of the lease is $2.2 million. The terms of the agreement include a rent holiday during the first year and base rent that escalates annually thereafter between 2% and 4%. The related rent expense is recorded on a straight-line basis over the length of the lease term. We have a standby letter of credit of $2.0 million for a security deposit for this lease.
	We have provisions in our leases that entitle us to aggregate leasehold improvement allowances of $9.5 million. These amounts are recorded as a reduction to rent expense ratably over the terms of the leases. Rent expense was reduced related to these lease provisions by $0.6 million during the year ended December 31, 2013 and $0.3 million during each of the years ended December 31, 2012 and 2011, respectively. The leasehold improvement allowances have been included in the table of operating lease commitments below as a reduction in our lease commitments ratably over the then remaining terms of the leases. The timing of the reimbursements for the actual leasehold improvements may vary from the amounts reflected in the table below.
	Additionally, we have subleased a portion of our facilities under various agreements extending through 2013. The reduction in rent expense related to these agreements during the year ending December 31, 2013 was not material to the consolidated statements of comprehensive income. Rent expense was reduced by $0.3 million and $0.4 million related to these agreements during the years ended December 31, 2012 and 2011, respectively.
	We have also received, and expect to receive through 2016, quarterly South Carolina state incentive payments as a result of locating our headquarters facility in Berkeley County, South Carolina. These amounts are recorded as a reduction of rent expense and were $2.4 million, $2.2 million and $2.3 million for the years ended December 31, 2013, 2012 and 2011, respectively.
	Additionally, we lease various office space and equipment under operating leases. We also have various non-cancelable capital leases for computer equipment and furniture that are not significant.
	Total rent expense was $9.0 million, $7.6 million and $4.7 million for the years ended December 31, 2013, 2012 and 2011, respectively.
	As of December 31, 2013, the future minimum lease commitments related to lease agreements, net of related sublease commitments and lease incentives, were as follows:
	Year ended December 31,	Operating
	(in thousands)	leases
	2014	$	10,027
	2015	9,872
	2016	9,570
	2017	9,616
	2018	9,819
	Thereafter	41,466
	Total minimum lease payments	$	90,370
	Other commitments
	As discussed in Note 9 of these consolidated financial statements, the term loans under our credit facility require periodic principal payments. The balance of the term loans and any amounts drawn on the revolving credit loans are due upon maturity of the credit facility in February 2017.
	We utilize third-party technology in conjunction with our products and services, with contractual arrangements varying in length from one to three years. In certain cases, these arrangements require a minimum annual purchase commitment by us. As of December 31, 2013, the remaining aggregate minimum purchase commitment under these arrangements was approximately $11.8 million through 2016. We incurred expense under these arrangements of $3.5 million for the year ended December 31, 2013.
	Legal contingencies
	We are subject to legal proceedings and claims that arise in the ordinary course of business. We record an accrual for a contingency when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. We do not believe the amount of potential liability with respect to these actions will have a material adverse effect upon our consolidated financial position, results of operations or cash flows.
	Guarantees and indemnification obligations
	We enter into agreements in the ordinary course of business with, among others, customers, creditors, vendors and service providers. Pursuant to certain of these agreements we have agreed to indemnify the other party for certain matters, such as property damage, personal injury, acts or omissions of ours, or our employees, agents or representatives, or third-party claims alleging that the activities of its contractual partner pursuant to the contract infringe a patent, trademark or copyright of such third party.
	We assess the fair value of our liability on the above indemnities to be immaterial based on historical experience and information known at December 31, 2013.

Income_Taxes_Notes

Income Taxes (Notes)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Tax Disclosure [Text Block]	'
	Income taxes
	Prior to October 13, 1999, we were organized as an S corporation under the Internal Revenue Code and, therefore, were not subject to federal income taxes. We historically made distributions to our stockholders to cover the stockholders' anticipated tax liability. In connection with our 1999 recapitalization, we converted our U.S. taxable status from an S corporation to a C corporation and, accordingly, since October 14, 1999, have been subject to federal and state income taxes. We file income tax returns in the U.S. for federal and various state jurisdictions as well as in foreign jurisdictions including Canada, United Kingdom, Australia, the Netherlands and Ireland. We are generally subject to U.S. federal income tax examination for calendar tax years 2010 through 2013 as well as state and foreign income tax examinations for various years depending on statutes of limitations of those jurisdictions.
	The following summarizes the components of income tax expense:
		Year ended December 31,
	(in thousands)	2013				2012				2011
	Current taxes:
	U.S. Federal	$	78			$	(1,764	)		$	3,434
	U.S. State and local	1,127				410				1,030
	International	(221		)		511				40
	Total current taxes	984				(843		)		4,504
	Deferred taxes:
	U.S. Federal	14,394				8,943				11,943
	U.S. State and local	(694		)		(796		)		1,536
	International	173				(562		)		54
	Total deferred taxes	13,873				7,585				13,533
	Total income tax provision	$	14,857			$	6,742			$	18,037
	The following summarizes the components of income before provision for income taxes:
		Year ended December 31,
	(in thousands)	2013				2012				2011
	U.S.	$	48,137			$	16,793			$	50,946
	International	(2,808		)		(3,468		)		311
	Income before provision for income taxes	$	45,329			$	13,325			$	51,257
	A reconciliation between the effect of applying the federal statutory rate and the effective income tax rate used to calculate our income tax provision is as follows:
		Year ended December 31,
		2013			2012			2011
	Federal statutory rate	35	%		35	%		35	%
	Effect of:
	State income taxes, net of federal benefit	5.2			8.3			4.2
	Change in state income tax rate applied to deferred tax balances	(2.5	)		(2.2	)		0.6
	Fixed assets	(1.0	)		(7.6	)		—
	Unrecognized tax benefit	0.3			2.9			(0.3	)
	State credits, net of federal benefit	(2.9	)		(1.7	)		(2.2	)
	Change in valuation reserve	0.7			4.1			0.7
	Federal credits generated	(5.1	)		—			(2.7	)
	Foreign tax rate	0.6			2.3			—
	Acquisition costs	—			10.8			0.6
	Foreign tax credits	(0.5	)		(3.0	)		—
	Section 162(m) limitation	1.8			0.1			(0.4	)
	Other	1.2			1.6			(0.3	)
	Income tax provision effective rate	32.8	%		50.6	%		35.2	%
	We recorded net excess tax benefits attributable to stock option and stock appreciation right exercises and restricted stock vesting of $0.1 million and $0.2 million in stockholders’ equity during the years ended December 31, 2012 and 2011, respectively. We were unable to recognize additional excess tax benefits of stock-based compensation deductions generated during 2013 and 2012 of $3.8 million and $0.6 million, respectively, because the deductions did not reduce income tax payable after considering our net operating loss carryforwards. Although not recognized for financial reporting purposes, these unrecognized tax benefits are available to reduce future taxable income.
	The federal and state research and development tax credits, which had previously expired on December 31, 2011, were reinstated as part of the American Taxpayer Relief Act of 2012 enacted on January 2, 2013. This legislation retroactively reinstated and extended the credits from the previous expiration date through December 31, 2013. The benefit of the federal and state credits for 2013 and 2012 has been included in 2013 tax expense, representing a $1.8 million and $1.6 million benefit, respectively.
	The significant components of our deferred tax assets and liabilities were as follows:
		December 31,
	(in thousands)	2013				2012
	Deferred tax assets relating to:
	Federal, state and foreign net operating loss carryforwards	$	18,144			$	30,839
	Federal, state and foreign tax credits	18,947				15,438
	Intangible assets	5,849				13,706
	Effect of expensing nonqualified stock options and restricted stock	3,818				7,634
	Accrued bonuses	3,286				4,361
	Deferred revenue	3,850				4,342
	Allowance for doubtful accounts	1,938				3,161
	Other	4,286				8,321
	Total deferred tax assets	60,118				87,802
	Deferred tax liabilities relating to:
	Intangible assets	(55,018		)		(65,882		)
	Fixed assets	(11,557		)		(12,643		)
	Other	(5,752		)		(7,318		)
	Total deferred tax liabilities	(72,327		)		(85,843		)
	Valuation allowance	(11,042		)		(10,651		)
	Net deferred tax asset (liabilities)	$	(23,251	)		$	(8,692	)
	As of December 31, 2013, our federal, foreign and state net operating loss carryforwards for income tax purposes were approximately $41.8 million, $3.1 million and $52.6 million, respectively. The federal and state net operating loss carryforwards are subject to various Internal Revenue Code limitations and applicable state tax laws. If not utilized, the federal net operating loss carryforwards will begin to expire in 2032 and the state net operating loss carryforwards will expire over various periods beginning in 2014. A portion of the foreign and state net operating loss carryforwards have a valuation reserve due to management's uncertainty regarding the future ability to use such carryforwards. Our federal, foreign and state tax credit carryforwards for income tax purposes were approximately $6.3 million, $0.5 million and $12.2 million, net of federal tax, respectively. If not utilized, the federal tax credit carryforwards will begin to expire in 2022 and the state tax credit carryforwards will begin to expire in 2014. The state tax credits had a valuation reserve of approximately $8.5 million, net of federal tax, as of December 31, 2013.
The following table illustrates the change in our deferred tax asset valuation allowance:
(in thousands)	Balance				Acquisition				Charges to			Balance at
	at beginning				related				expense			end of
Year ended December 31,	of year				change							year
2013	$	10,651			$	635			$	(244	)	$	11,042
2012	10,079				286				286			10,651
2011	9,614				—				465			10,079
The following table sets forth the change to our unrecognized tax benefit for the years ended December 31, 2013, 2012 and 2011:
	December 31,
(in thousands)	2013				2012				2011
Balance at beginning of year	$	3,846			$	1,777			$	1,414
Increases from prior period positions	1,254				2,766				87
Decreases in prior year position	(813		)		(93		)		(9		)
Increases from current period positions	224				—				285
Lapse of statute of limitations	(813		)		(604		)		—
Balance at end of year	$	3,698			$	3,846			$	1,777
The total amount of unrecognized tax benefit that, if recognized, would favorably affect the effective tax rate was $3.7 million at December 31, 2013. We recognize accrued interest and penalties, if any, related to unrecognized tax benefits as a component of income tax expense. The total amount of accrued interest and penalties included in the consolidated balance sheets as of December 31, 2013 and 2012 was $0.6 million and $0.7 million, respectively. The total amount of interest and penalties included in the consolidated statements of comprehensive income as a decrease in income tax expense for 2012 was $0.3 million. The total amount of interest and penalties included in the consolidated statement of comprehensive income as an increase in income tax expense for 2013 and 2011 was $0.2 million and $0.1 million, respectively.
We have taken federal and state tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits might decrease within the next twelve months. This possible decrease could result from the expiration of statutes of limitations. The reasonably possible decrease approximates $1.3 million at December 31, 2013.
We concluded that a portion of the undistributed earnings of our foreign subsidiaries, as related solely to Canada, are not permanently reinvested and as a result we recorded a tax liability and applicable foreign tax credits for the effect of repatriating those foreign earnings. For the remaining undistributed earnings, which we do not consider to be significant, we concluded that these earnings would be permanently reinvested in the local jurisdictions and not repatriated to the United States. Accordingly, we have not provided for U.S. federal and foreign withholding taxes on those undistributed earnings of our foreign subsidiaries. It is not practicable to estimate the amount that might be payable if some or all of such earnings were to be remitted.

StockBased_Compensation_Notes

Stock-Based Compensation (Notes)	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock-Based Compensation	'
	Stock-based compensation
	Employee stock-based compensation plans
	Under the Blackbaud, Inc. 2008 Equity Incentive Plan (2008 Equity Plan), we may grant incentive stock options, non-statutory stock options, restricted stock awards, restricted stock unit awards, stock appreciation rights, performance stock awards and other stock awards to eligible employees, directors and consultants. We maintain other stock-based compensation plans including the 2004 Stock Plan, under which no additional grants may be made, and the 2009 Equity Compensation Plan for Employees from Acquired Companies, under which we may grant shares of common stock to employees pursuant to employment contracts or other arrangements entered into in connection with past and future acquisitions.
	In connection with the acquisition of Kintera in July 2008, we maintain the Kintera, Inc. Amended and Restated 2003 Equity Incentive Plan, as amended (Kintera 2003 Plan), which we assumed upon the acquisition of Kintera. In connection with the acquisition of Convio in May 2012, we maintain the Convio, Inc. 1999 Stock Option/Stock Issuance Plan, as amended (Convio 1999 Plan) and Convio, Inc. 2009 Stock Incentive Plan, as amended (Convio 2009 Plan), which we assumed upon the acquisition of Convio. Our Compensation Committee of the Board of Directors administers all of these plans and the stock-based awards are granted under terms determined by them.
	The total number of authorized stock-based awards available under our plans was 5,723,093 as of December 31, 2013. We issue common stock from our pool of authorized stock upon exercise of stock options and stock appreciation rights, vesting of restricted stock units or upon granting of restricted stock.
	Historically, we have issued four types of awards under these plans: stock options, restricted stock awards, restricted stock units and stock appreciation rights. The following table sets forth the number of awards outstanding for each award type as of:
		Outstanding at December 31,
	Award type	2013			2012
	Stock options	24,158			60,775
	Restricted stock awards	1,015,934			1,202,121
	Restricted stock units	130,512			389,913
	Stock appreciation rights	1,292,996			2,786,828
	The majority of the stock-based awards granted under these plans have a 10-year contractual term. Stock appreciation rights (SARs) have contractual lives of 7 years. Awards granted to our executive officers and certain members of management are subject to accelerated vesting upon a change in control as defined in the employees’ retention agreement.
	We recognize compensation expense associated with stock options and awards with performance or market based vesting conditions on an accelerated basis over the requisite service period of the individual grantees, which generally equals the vesting period. We recognize compensation expense associated with restricted stock awards and SARs on a straight-line basis over the requisite service period of the individual grantees, which generally equals the vesting period. Compensation expense is recognized net of estimated forfeitures such that expense is recognized only for those stock-based awards that are expected to vest. A forfeiture rate is estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from initial estimates.
	Stock-based compensation expense is allocated to expense categories on the consolidated statements of comprehensive income based on where the associated employee’s compensation is recorded. The following table summarizes stock-based compensation expense:
		Year ended December 31,
	(in thousands)	2013				2012				2011
	Included in cost of revenue:
	Cost of subscriptions	$	1,032			$	860			$	571
	Cost of services	2,464				2,786				1,966
	Cost of maintenance	545				538				741
	Total included in cost of revenue	4,041				4,184				3,278
	Included in operating expenses:
	Sales and marketing	2,351				2,527				1,325
	Research and development	3,731				3,556				3,039
	General and administrative	6,787				8,973				7,242
	Total included in operating expenses	12,869				15,056				11,606
	Total	$	16,910			$	19,240			$	14,884
	The total amount of compensation cost related to non-vested awards not recognized was $34.5 million at December 31, 2013. It is expected that this amount will be recognized over a weighted average period of 1.9 years .
	Stock options
	The following table summarizes the options outstanding under each of our stock-based compensation plans as of December 31, 2013.
	Plan	Date of adoption		Options			Range of
				outstanding			exercise prices
	2004 Stock Plan	March 23, 2004		11,213			$8.60-$13.05
	Kintera 2003 Plan	July 8, 2008	-1	3,977			$10.59-$19.26
	Convio 1999 Plan	5-May-12	-1	6,538			$9.10-$15.54
	Convio 2009 Plan	5-May-12	-1	2,430			$15.62-$18.20
	Total			24,158
	-1	In connection with the acquisitions of Kintera and Convio, we assumed certain stock options issued and outstanding at the date of acquisition.
	The following table summarizes our outstanding stock options as of December 31, 2013, and changes during the year then ended:
	Options	Share			Weighted				Weighted		Aggregate
		options			average				average		intrinsic value
					exercise				remaining		(in thousands)
					price				contractual
									term
									(in years)
	Outstanding at January 1, 2013	60,775			$	11.09
	Exercised	(35,831	)		10.76
	Forfeited	(513	)		14.72
	Expired	(273	)		13.25
	Outstanding at December 31, 2013	24,158			$	11.49			3.1		$	631
	Unvested and expected to vest at December 31, 2013	388			$	17.75			6.3		$	8
	Vested and exercisable at December 31, 2013	23,738			$	11.38			3.1		$	624
	There have been no new stock option awards granted since 2005. The total intrinsic value of options exercised during the years ended December 31, 2013, 2012 and 2011 was $0.8 million, $3.2 million and $3.1 million, respectively. The total fair value of options that vested during the years ended December 31, 2013, 2012 and 2011 was not material. All outstanding options granted had a fair market value assigned at the grant date based on the use of the Black-Scholes option pricing model.
	Restricted stock awards
	We have also granted shares of common stock subject to certain restrictions under the 2008 Equity Plan and the 2004 Stock Plan. Restricted stock awards granted to employees vest in equal annual installments over four years from the grant date. Restricted stock awards granted to non-employee directors vest after one year from the date of grant or, if earlier, immediately prior to the next annual election of directors, provided the non-employee director is serving as a director at that time. The fair market value of the stock at the time of the grant is amortized on a straight-line basis to expense over the period of vesting. Recipients of restricted stock awards have the right to vote such shares and receive dividends.
	The following table summarizes our unvested restricted stock awards as of December 31, 2013, and changes during the year then ended:
	Restricted stock awards	Restricted			Weighted
		stock awards			average
					grant-date
					fair value
	Unvested at January 1, 2013	1,202,121			$	24.58
	Granted	458,462			35.31
Vested	(416,900	)		24.86
Forfeited	(227,749	)		24.55
Unvested at December 31, 2013	1,015,934			$	29.3
As of December 31, 2013, the number and intrinsic value of restricted stock awards expected to vest was 965,270 and $36.3 million, respectively. The total fair value of restricted stock awards that vested during the years ended December 31, 2013, 2012 and 2011 was $10.4 million, $9.6 million and $9.9 million, respectively. The weighted average grant-date fair value of restricted stock awards granted during the years ended December 31, 2012 and 2011 was $22.77 and $27.98, respectively.
Restricted stock units
We have also granted restricted stock units subject to certain restrictions under the 2008 Equity Plan and assumed restricted stock units in connection with the Convio acquisition. Restricted stock units granted to employees vest in equal annual installments generally over three years from the grant date. We have also granted restricted stock units for which vesting is subject to meeting certain performance and/or market conditions. The fair market value of the stock at the time of the grant is amortized to expense on a straight-line basis over the period of vesting except for awards with market or performance conditions which are amortized on an accelerated basis over the period of vesting. Income tax benefits resulting from the vesting of restricted stock units are recognized in the period the unit is exercised to the extent expense has been recognized.
The following table summarizes our unvested restricted stock units as of December 31, 2013, and changes during the year then ended:
Restricted stock units	Restricted			Weighted
	stock units			average
				grant-date
				fair value
Unvested at January 1, 2013	389,913			$	27.55
Granted	25,427			35.7
Forfeited	(64,863	)		27.69
Expired	(30,049	)		24.7
Vested	(189,916	)		28.13
Unvested at December 31, 2013	130,512			$	28.84
As of December 31, 2013, the number and intrinsic value of restricted stock units expected to vest was 125,247 and $4.7 million, respectively. The weighted average grant date fair value of restricted stock units granted for the years ended December 31, 2012 and 2011 was $21.41 and $26.68, respectively.
Stock appreciation rights
We have granted SARs under the 2008 Equity Plan and the 2004 Stock Plan to certain members of management. The SARs will be settled in stock at the time of exercise and vest four years from the date of grant subject to the recipient’s continued employment with us. The number of shares issued upon the exercise of the SARs is calculated as the difference between the share price of our stock on the date of exercise and the date of grant multiplied by the number of SARs divided by the share price on the exercise date.
The following table summarizes our outstanding SARs as of December 31, 2013, and changes during the year then ended:
Stock appreciation rights	Stock			Weighted				Weighted		Aggregate
	appreciation			average				average		intrinsic value
	rights			exercise				remaining		(in thousands)
				price				contractual
								term
								(in  years)
Outstanding at January 1, 2013	2,786,828			$	23.87
Granted	60,367			28.47
Exercised	(1,270,064	)		23.53
Forfeited	(282,552	)		24.79
Expired	(1,583	)		$	26.17
Outstanding at December 31, 2013	1,292,996			$	24.21			5		$	17,375
Unvested and expected to vest at December 31, 2013	844,760			$	24.21			5.5		$	11,350
Vested and exercisable at December 31, 2013	418,809			$	24.15			3.8		$	5,653
The total intrinsic value of SARs exercised during the year ended December 31, 2013, 2012 and 2011 was $12.9 million, $2.4 million and $2.2 million, respectively. The total fair value of SARs that vested during the year ended December 31, 2013, 2012 and 2011 was $3.4 million, $3.9 million and $3.6 million, respectively. The weighted average grant date fair value of SARs granted for the years ended December 31, 2013, 2012 and 2011 was $6.59, $6.36 and $8.10, respectively. All outstanding SARs granted had a fair market value assigned at the grant date based on the use of the Black-Scholes option pricing model. All SARs granted with a market condition had a fair market value assigned at the grant date based on the use of a Monte Carlo simulation model. Significant assumptions used in the Black-Scholes option pricing model for SARs granted in 2013, 2012 and 2011 were as follows:
	Year ended December 31,
	2013			2012			2011
Volatility	32% to 35%			35% to 41%			41% to 42%
Dividend yield	1.70%			1.70%			1.7% to 1.8%
Risk-free interest rate	0.6% to 0.8%			0.5% to 0.6%			0.6% to 1.9%
Expected SAR life in years	4			4			4
The expected volatility assumption is based on the volatility derived from prices of our stock over a historical term consistent with the expected life of the SAR at the time of grant. The dividend yield is based on the adopted dividend policy in effect at the time of grant and the expectation of future dividends. The risk-free interest rate is based on a United States Treasury instrument with a term consistent with the expected life of the SAR at the time of grant. The expected life of the SAR represents the period that the award is expected to be outstanding based on historical experience. In determining the appropriate expected life of the SAR, we segregate our grantees into categories based upon employee levels that are expected to be indicative of similar award-related behavior.

Stockholders_Equity_Notes

Stockholders' Equity (Notes)	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Stockholders' Equity	'
	Stockholders’ equity
	Preferred stock
	Our Board of Directors may fix the relative rights and preferences of each series of preferred stock in a resolution of the Board of Directors.
	Dividends
	Our Board of Directors has adopted a dividend policy which provides for the distribution to stockholders a portion of cash generated by us that is in excess of operational needs and capital expenditures. Our credit facility limits the amount of dividends payable and certain state laws restrict the amount of dividends distributed.
	The following table provides information with respect to quarterly dividends paid on common stock during the year ended December 31, 2013.
	Declaration Date	Dividend per Share			Record Date	Payable Date
	Feb-13	$	0.12		28-Feb	15-Mar
	May-13	$	0.12		28-May	14-Jun
	Aug-13	$	0.12		28-Aug	13-Sep
	Nov-13	$	0.12		27-Nov	13-Dec
	In February 2014, our Board of Directors declared a first quarter dividend of $0.12 per share payable on March 14, 2014 to stockholders of record on February 28, 2014.
	Stock repurchase program
	We have a repurchase program that authorizes us to purchase up to $50.0 million of our outstanding shares of common stock. The program does not have an expiration date. The shares can be purchased from time to time on the open market or in privately negotiated transactions depending upon market conditions and other factors.
	We account for purchases of treasury stock under the cost method. The remaining amount available to purchase stock under the stock repurchase program was $50.0 million as of December 31, 2013.
	Changes in accumulated other comprehensive loss by component
	The changes in accumulated other comprehensive loss by component, consisted of the following:
	(in thousands)	Gains and losses on cash flow hedges				Foreign currency translation adjustment			Total
	Balance at December 31, 2012	$	(791	)		$	(1,182	)	$	(1,973	)
	Other comprehensive (loss) income before reclassifications	(259		)		53			(206		)
	Amounts reclassified from accumulated other comprehensive loss to interest expense(1)	794				—			794
	Net current-period other comprehensive income	535				53			588
	Balance at December 31, 2013	$	(256	)		$	(1,129	)	$	(1,385	)
	-1	Included in the amount reclassified from accumulated other comprehensive loss during 2013 was an income tax benefit of $0.3 million.

Employee_ProfitSharing_Plan_No

Employee Profit-Sharing Plan (Notes)	12 Months Ended
	Dec. 31, 2013
Employee profit-sharing plan [Abstract]	'
Compensation and Employee Benefit Plans [Text Block]	'
	Employee profit-sharing plan
	We have a 401(k) profit-sharing plan (the 401K Plan) covering substantially all employees. Employees can contribute between 1% and 30% of their salaries in 2013, 2012 and 2011, and we match 50% of qualified employees’ contributions up to 6% of their salary. The 401K Plan also provides for additional employer contributions to be made at our discretion. Total matching contributions to the 401K Plan for the years ended December 31, 2013, 2012 and 2011 were $5.1 million, $4.6 million and $4.0 million, respectively. There was no discretionary contribution by us to the 401K Plan in 2013, 2012 and 2011.

Segment_Information_Notes

Segment Information (Notes)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Segment Information	'
	Segment information
	As of December 31, 2013, our reportable segments were as follows: the Enterprise Customer Business Unit, or the ECBU, the General Markets Business Unit, or the GMBU, the International Business Unit, or IBU, and Target Analytics. Following is a description of each reportable segment:
	•	The ECBU is focused on marketing, sales, delivery and support to large and/or strategic, specifically identified prospects and customers in North America;
	•	The GMBU is focused on marketing, sales, delivery and support to all emerging and mid-sized prospects and customers in North America;
	•	The IBU is focused on marketing, sales, delivery and support to all prospects and customers outside of North America; and
	•	Target Analytics is primarily focused on marketing, sales and delivery of analytics services to all prospects and customers in North America.
	Our chief operating decision maker is our chief executive officer, or CEO. The CEO reviews financial information presented on an operating segment basis for the purposes of making certain operating decisions and assessing financial performance. The CEO uses internal financial reports that provide segment revenues and operating income, excluding stock-based compensation expense, amortization expense, depreciation expense, research and development expense and certain corporate sales, marketing, general and administrative expenses. Currently, the CEO believes that the exclusion of these costs allows for a better understanding of the operating performance of the operating units and management of other operating expenses and cash needs. The CEO does not review any segment balance sheet information.
	We have recast our segment disclosures for 2012 and 2011 to present them on a consistent basis with the current year. During 2013, we refined our methodology for allocating revenue and expenses to our reportable segments to provide further precision in those allocations. Summarized reportable segment financial results were as follows:
		Year ended December 31,
	(in thousands)	2013		2012		2011
	Revenue by segment:
	ECBU	$	195,570	$	165,161	$	127,945
	GMBU	225,352		203,178		171,999
	IBU	41,488		40,068		33,841
	Target Analytics	39,845		37,453		35,769
	Other(1)	1,562		1,559		1,314
	Total revenue	$	503,817	$	447,419	$	370,868
	Segment operating income(2):
	ECBU	$	103,443	$	74,419	$	53,141
	GMBU	131,707		121,985		101,572
	IBU	8,082		5,265		6,922
	Target Analytics	16,582		17,619		16,882
	Other(1)	1,342		1,485		1,203
		261,156		220,773		179,720
	Less:
	Corporate unallocated costs(3)	168,106		164,749		106,330
	Stock-based compensation costs	16,910		19,240		14,884
	Amortization expense	24,598		17,349		7,578
	Interest expense (income), net	5,751		5,718		17
	Other expense (income), net	462		392		(346		)
	Income before provision for income taxes	$	45,329	$	13,325	$	51,257
	-1	Other includes revenue and the related costs from the sale of products and services not directly attributable to an operating segment.
	-2	Segment operating income includes direct, controllable costs related to the sale of products and services by the reportable segment, except for IBU, which includes operating costs from our foreign locations such as sales, marketing, general, administrative, depreciation and facilities costs.
	-3	Corporate unallocated costs include research and development, depreciation expense, and certain corporate sales, marketing, general and administrative expenses.
	Revenue by product and service group for each of our reportable segments were as follows:
		Year ended December 31,
	(in thousands)	2013		2012		2011
	ECBU revenue:
	License fees	$	7,374	$	7,888	$	6,741
	Subscriptions	97,392		73,246		45,572
	Services	48,471		44,882		39,662
	Maintenance	39,503		35,905		32,759
	Other	2,830		3,240		3,211
	Total ECBU revenue	$	195,570	$	165,161	$	127,945
	GMBU revenue:
	License fees	$	6,718	$	9,068	$	8,742
	Subscriptions	88,766		65,482		41,017
	Services	41,228		39,036		34,820
	Maintenance	84,763		86,026		83,963
	Other	3,877		3,566		3,457
	Total GMBU revenue	$	225,352	$	203,178	$	171,999
	IBU revenue:
	License fees	$	2,510	$	3,476	$	3,830
	Subscriptions	12,743		10,038		4,575
	Services	11,337		12,230		11,472
	Maintenance	14,056		13,673		13,484
	Other	842		651		480
	Total IBU revenue	$	41,488	$	40,068	$	33,841
	Target Analytics revenue:
	License fees	$	113	$	119	$	162
	Subscriptions	13,755		13,320		12,292
	Services	25,495		23,452		22,810
	Maintenance	423		497		396
Other	59		65		109
Total Target Analytics revenue	$	39,845	$	37,453	$	35,769
Other revenue:
License fees	$	—	$	—	$	—
Subscriptions	—		16		88
Services	17		26		17
Maintenance	—		—		2
Other	1,545		1,517		1,207
Total Other revenue	$	1,562	$	1,559	$	1,314
Total consolidated revenue	$	503,817	$	447,419	$	370,868
We derive a portion of our revenue from our foreign operations. The following table presents revenue by geographic region based on country of invoice origin and identifiable, long-lived assets by geographic region based on the location of the assets.
(in thousands)	United States		Canada		Europe			Asia Pacific		Total Foreign		Total
Revenue from external customers:
2013	$	439,887	$	23,344	$	24,107		$	16,479	$	63,930	$	503,817
2012	386,376		22,770		23,022			15,251		61,043		447,419
2011	317,305		21,725		21,162			10,676		53,563		370,868
Property and equipment:
December 31, 2013	$	47,367	$	72	$	1,694		$	417	$	2,183	$	49,550
December 31, 2012	47,826		188		810			239		1,237		49,063
It is impractical for us to identify our total assets by segment.

Quarterly_Results_Notes

Quarterly Results (Notes)	12 Months Ended
	Dec. 31, 2013
Quarterly Results [Abstract]	'
Quarterly Financial Information [Text Block]	'
	Quarterly results (unaudited)
	(in thousands, except per share data)	December 31, 2013		September 30, 2013		June 30, 2013			March 31, 2013
	Total revenue	$	134,872	$	127,854	$	125,468		$	115,623
	Gross profit	68,514		71,740		68,855			62,045
	Income from operations	14,622		18,008		14,318			4,594
	Income before provision for income taxes	13,287		16,490		12,532			3,020
	Net income	11,790		9,393		6,623			2,666
	Earnings per share
	Basic	$	0.26	$	0.21	$	0.15		$	0.06
	Diluted	$	0.26	$	0.21	$	0.15		$	0.06
	(in thousands, except per share data)	December 31, 2012		September 30, 2012		June 30, 2012			March 31, 2012
	Total revenue	$	120,051	$	122,472	$	110,190		$	94,706
	Gross profit	64,299		67,344		59,685			53,631
	Income (loss) from operations	9,875		6,185		(1,877		)	5,252
	Income (loss) before provision for income taxes	7,342		4,629		(3,446		)	4,800
	Net income (loss)	3,270		2,825		(2,271		)	2,759
	Earnings (loss) per share
	Basic	$	0.07	$	0.06	$	(0.05	)	$	0.06
	Diluted	$	0.07	$	0.06	$	(0.05	)	$	0.06
	Included in the fourth quarter 2013 was $8.5 million of subscription revenue which was attributable to a prospective change in presentation from net to gross for revenues and costs associated with certain of our payment processing services effective October 2013. Earnings (loss) per common share are computed independently for each of the periods presented and, therefore, may not add up to the total for the year. The results of operations of acquired companies are included in the consolidated results of operations from the date of their respective acquisition as described in Note 3.

Restructuring_Notes

Restructuring (Notes)	12 Months Ended
	Dec. 31, 2013
Restructuring and Related Activities [Abstract]	'
Restructuring	'
	Restructuring
	During 2012, in an effort to consolidate our operating locations, we decided not to renew our lease for office space in San Diego, CA, which matured on June 30, 2013. As a result, we initiated a plan to transition most of our operations based in San Diego, CA to our Austin, TX location, which we substantially completed in June 2013 when the lease matured.
	The following table summarizes our restructuring costs related to our San Diego office transition as of December 31, 2013:
		Total costs expected to be incurred		Costs incurred during the year ended		Cumulative costs incurred as of
	(in thousands)			December 31, 2013
	By component:
	Employee severance and retention costs	$	295	$	120	$	295
	Employee relocation costs	187		187		187
		482		307		482
	By reportable segment:
	Other	$	482	$	307	$	482
	The change in our liability related to our San Diego office transition during the year ended December 31, 2013, consisted of the following:
		Accrued at		Increases for incurred costs		Costs paid			Accrued at
	(in thousands)	December 31, 2012							December 31, 2013
	Employee severance and retention costs	$	175	$	120	$	(295	)	$	—
	Employee relocation costs	—		187		(187		)	—
		$	175	$	307	$	(482	)	$	—
	In January 2013, we implemented a realignment of our workforce in response to changes in the nonprofit industry and global economy. The realignment included a reduction in workforce of approximately 135 positions and was substantially completed during 2013.
	The following table summarizes our restructuring costs related to the reduction in workforce as of December 31, 2013:
		Total costs expected to be incurred		Costs incurred during the year ended		Cumulative costs incurred as of
	(in thousands)			December 31, 2013
	By component:
	Employee severance costs	$	3,187	$	3,187	$	3,187
	By reportable segment:
	ECBU	$	828	$	828	$	828
	GMBU	290		290		290
	Target Analytics	136		136		136
	Other	1,933		1,933		1,933
		$	3,187	$	3,187	$	3,187
	The change in our liability related to the reduction in workforce during 2013, consisted of the following:
		Accrued at		Increases for incurred costs		Costs paid			Accrued at
	(in thousands)	December 31, 2012							December 31, 2013
	Employee severance costs	$	—	$	3,187	$	(3,187	)	$	—

Significant_Accounting_Policie1

Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Basis of Presentation, Policy [Policy Text Block]	'
	Basis of presentation
	The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (GAAP).
Basis of Consolidation, Policy [Policy Text Block]	'
	Basis of consolidation
	The consolidated financial statements include the accounts of Blackbaud, Inc. and its wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation.
Use of Estimates, Policy [Policy Text Block]	'
	Use of estimates
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported amounts of revenues and expenses during the reporting periods. On an ongoing basis, we reconsider and evaluate our estimates and assumptions, including those that impact revenue recognition, long-lived and intangible assets and goodwill, stock-based compensation, the provision for income taxes, capitalization of software development costs, our allowance for sales returns and doubtful accounts, deferred sales commissions and professional services costs, valuation of derivative instruments, accounting for business combinations and loss contingencies. Changes in the facts or circumstances underlying these estimates could result in material changes and actual results could materially differ from these estimates.
Revenue Recognition, Policy [Policy Text Block]	'
	Revenue recognition
	Our revenue is primarily generated from the following sources: (i) charging for the use of our software products in a hosted environment; (ii) selling perpetual licenses of our software products; (iii) providing professional services including implementation, training, consulting, analytic, hosting and other services; and (iv) providing software maintenance and support services.
	We recognize revenue when all of the following conditions are met:
	•Persuasive evidence of an arrangement exists;
	•The products or services have been delivered;
	•The fee is fixed or determinable; and
	•Collection of the resulting receivable is probable.
	Determining whether and when these criteria have been met can require significant judgment and estimates. We deem acceptance of an agreement to be evidence of an arrangement. Delivery of our services occurs when the services have been performed. Delivery of our products occurs when the product is shipped or transmitted, and title and risk of loss have transferred to the customers. Our typical agreements do not include customer acceptance provisions; however, if acceptance provisions are provided, delivery is deemed to occur upon acceptance. We consider the fee to be fixed or determinable unless the fee is subject to refund or adjustment or is not payable within our standard payment terms. Payment terms greater than 90 days are considered to be beyond our customary payment terms. Collection is deemed probable if we expect that the customer will be able to pay amounts under the arrangement as they become due. If we determine that collection is not probable, we defer revenue recognition until collection. Revenue is recognized net of sales returns and allowances.
	We follow guidance provided in ASC 605-45, Principal Agent Considerations, which states that determining whether a company should recognize revenue based on the gross amount billed to a customer or the net amount retained is a matter of judgment that depends on the facts and circumstances of the arrangement and that certain factors should be considered in the evaluation.
	Subscriptions
	We provide hosting services to customers who have purchased perpetual rights to certain of our software products (hosting services). Revenue from hosting services, as well as data enrichment services, data management services and online training programs, is recognized ratably beginning on the activation date over the term of the agreement, which generally ranges from one to three years. Any related set-up fees are recognized ratably over the estimated period that the customer benefits from the related hosting service. The estimated period of benefit is evaluated on an annual basis using historical customer retention information by product or service.
	We make certain of our software products available for use in hosted application arrangements without licensing perpetual rights to the software (hosted applications). Revenue from hosted applications is recognized ratably beginning on the activation date over the term of the agreement, which generally ranges from one to three years. Any revenue related to upfront activation, set-up or implementation fees is recognized ratably over the estimated period that the customer benefits from the related hosted application. Direct and incremental costs relating to activation, set-up and implementation for hosted applications are capitalized until the hosted application is deployed and in use, and then expensed over the estimated period that the customer benefits from the related hosted application.
	For arrangements that have multiple elements and do not include software licenses, we allocate arrangement consideration at the inception of the arrangement to those elements that qualify as separate units of accounting. The arrangement consideration is allocated to the separate units of accounting based on relative selling price method in accordance with the selling price hierarchy, which includes: (i) vendor specific objective evidence (VSOE) of fair value if available; (ii) third-party evidence (TPE) if VSOE is not available; and (iii) best estimate of selling price (BESP) if neither VSOE nor TPE is available. In general, we use VSOE to allocate the selling price to subscription and service deliverables.
	We offer certain payment processing services with the assistance of third-party vendors. When we are the primary obligor in a transaction, have latitude in establishing prices and are the party determining the service specifications or have several but not all of these indicators, we record the revenue and cost on a gross basis. Otherwise, we record revenue associated with the related subscribers on a net basis, netting the cost of revenue associated with the service against the gross amount billed the customer and record the net amount as revenue.
	Revenue from transaction processing services is recognized when the service is provided and the amounts are determinable. Revenue directly associated with processing donations for customers are included in subscriptions revenue.
	License fees
	We sell perpetual software licenses with maintenance, varying levels of professional services and, in certain instances, with hosting services. We allocate revenue to each of the elements in these arrangements using the residual method under which we first allocate revenue to the undelivered elements, typically the non-software license components, based on VSOE of fair value of the various elements. We determine VSOE of fair value of the various elements using different methods. VSOE of fair value for maintenance services associated with software licenses is based upon renewal rates stated in the agreements with customers, which demonstrate a consistent relationship of maintenance pricing as a percentage of the contractual license fee. VSOE of fair value of professional services and other products and services is based on the average selling price of these same products and services to other customers when sold on a stand-alone basis. Any remaining revenue is allocated to the delivered elements which is normally the software license in the arrangement.
	When a software license is sold with software customization services, generally the services are to provide customer support for assistance in creating special reports and other enhancements that will assist with efforts to improve operational efficiency and/or to support business process improvements. These services are generally not essential to the functionality of the software. However, when software customization services are considered essential to the functionality of the software, we recognize revenue for both the software license and the services using the percentage-of-completion method.
	Services
	We generally bill consulting, installation and implementation services based on hourly rates plus reimbursable travel-related expenses. Revenue is recognized for these services over the period the services are performed.
	We recognize analytic services revenue from donor prospect research engagements, the sale of lists of potential donors, benchmarking studies and data modeling service engagements upon delivery. In arrangements where we provide customers the right to updates to the lists during the contract period, revenue is recognized ratably over the contract period.
	We sell training at a fixed rate for each specific class at a per attendee price or at a packaged price for several attendees, and recognize the related revenue upon the customer attending and completing training. Additionally, we sell fixed-rate programs, which permit customers to attend unlimited training over a specified contract period, typically one year, subject to certain restrictions, and revenue is recognized ratably over the contract period.
	Maintenance
	We recognize revenue from maintenance services ratably over the contract term, typically one year. Maintenance contracts are at rates that vary according to the level of the maintenance program and are generally renewable annually. Maintenance contracts may also include the right to unspecified product upgrades on an if-and-when available basis. Certain support services are sold in prepaid units of time and recognized as revenue upon their usage.
	Deferred revenue
	To the extent that our customers are billed for the above-described services in advance of delivery, we record such amounts in deferred revenue.
Fair Value Measurements, Policy [Policy Text Block]	'
	Fair value measurements
	We measure certain financial assets and liabilities at fair value on a recurring basis, including derivative instruments. Fair value is defined as the exchange price that would be received upon purchase of an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants at the measurement date. We use a three-tier fair value hierarchy to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows:
	•	Level 1 - Quoted prices for identical assets or liabilities in active markets;
	•	Level 2 - Quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets in markets that are not active, and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets; and
	•	Level 3 - Valuations derived from valuation techniques in which one or more significant inputs are unobservable.
	Our financial assets and liabilities are classified in their entirety within the hierarchy based on the lowest level of input that is significant to fair value measurement. Changes to a financial assets' or liabilities' level within the fair value hierarchy are determined as of the end of a reporting period.
Derivative Instruments, Policy [Policy Text Block]	'
	Derivative instruments
	We use derivative instruments to manage interest rate risk. We view derivative instruments as risk management tools and do not use them for trading or speculative purposes. Our policy requires that derivatives used for hedging purposes be designated and effective as a hedge of the identified risk exposure at the inception of the contract. Accordingly, changes in fair value of the derivative contract must be highly correlated with changes in the fair value of the underlying hedged item at inception of the hedge and over the life of the hedge contract.
	We record all derivative instruments on our consolidated balance sheets at fair value. If the derivative is designated as a fair value hedge, the changes in the fair value of the derivative and of the hedged item attributable to the hedged risk are recognized currently in earnings. If the derivative is designated as a cash flow hedge, the effective portions of the changes in fair value of the derivative are recorded in other comprehensive income and reclassified to earnings in a manner that matches the timing of the earnings impact of the hedged transactions. Ineffective portions of the changes in the fair value of cash flow hedges are recognized currently in earnings.
Reimbursable Travel Expense, Policy [Policy Text Block]	'
	Reimbursable travel expense
	We expense reimbursable travel costs as incurred and include them in cost of other revenue. The reimbursement of these costs by our customers is included in other revenue.
Sales Taxes, Policy [Policy Text Block]	'
	Sales taxes
	We present sales taxes and other taxes collected from customers and remitted to governmental authorities on a net basis and, as such, exclude them from revenues.
Shipping and Handling, Policy [Policy Text Block]	'
	Shipping and handling
	We expense shipping and handling costs as incurred and include them in cost of other revenue. The reimbursement of these costs by our customers is included in other revenue.
Cash and Cash Equivalents, Policy [Policy Text Block]	'
	Cash and cash equivalents
	We consider all highly liquid investments purchased with a maturity of three months or less to be cash equivalents.
Donor Restricted Cash and Donations Payable, Policy [Policy Text Block]	'
	Donor restricted cash and donations payable
	Restricted cash consists of donations collected by us and payable to our customers, net of the associated transaction fees earned. Monies associated with donations payable are segregated in a separate bank account and used exclusively for the payment of donations payable. This usage restriction is either legally or internally imposed and reflects our intention with regard to such deposits.
Concentration of Credit Risk, Policy [Policy Text Block]	'
	Concentration of credit risk
	Financial instruments that potentially subject us to concentrations of credit risk consist of cash and cash equivalents, donor restricted cash and accounts receivable. Our cash and cash equivalents and donor restricted cash are placed with high credit-quality financial institutions. Our accounts receivable are derived from sales to customers who primarily operate in the nonprofit sector. With respect to accounts receivable, we perform ongoing evaluations of our customers and maintain an allowance for doubtful accounts based on historical experience and our expectations of future losses. As of and for the years ended December 31, 2013, 2012 and 2011, there were no significant concentrations with respect to our consolidated revenues or accounts receivable.
Property and Equipment, Policy [Policy Text Block]	'
	Property and equipment
	We record property and equipment at cost and depreciate them over their estimated useful lives using the straight-line method. Property and equipment subject to capital leases are depreciated over the lesser of the term of the lease or the estimated useful life of the asset. Upon retirement or sale, the cost of assets disposed of and the related accumulated depreciation are removed from the accounts and any resulting gain or loss is credited or charged to income. Repair and maintenance costs are expensed as incurred.
	Construction-in-progress represents purchases of computer software and hardware associated with new internal system implementation projects which had not been placed in service at the respective balance sheet dates. We transferred these assets to the applicable property category on the date they are placed in service. There was no capitalized interest applicable to construction-in-progress for the years ended December 31, 2013 and 2012.
Business Combinations, Policy [Policy Text Block]	'
	Business combinations
	We are required to allocate the purchase price of acquired companies to the tangible and intangible assets acquired and liabilities assumed at the acquisition date based upon their estimated fair values. Goodwill as of the acquisition date represents the excess of the purchase consideration of an acquired business over the fair value of the underlying net tangible and intangible assets acquired and liabilities assumed. This allocation and valuation require management to make significant estimates and assumptions, especially with respect to long-lived and intangible assets.
	Critical estimates in valuing intangible assets include, but are not limited to, estimates about: future expected cash flows from customer contracts, proprietary technology and non-compete agreements; the acquired company's brand awareness and market position, assumptions about the period of time the brand will continue to be valuable; as well as expected costs to develop the in-process research and development into commercially viable products and estimated cash flows from the projects when completed, and discount rates. Our estimates of fair value are based upon assumptions we believe to be reasonable, but which are inherently uncertain and unpredictable. Assumptions may be incomplete or inaccurate, and unanticipated events and circumstances may occur.
Goodwill and Intangible Assets, Policy [Policy Text Block]	'
	Goodwill
	Goodwill represents the purchase price in excess of the net amount assigned to assets acquired and liabilities assumed by us in a business combination. Goodwill is allocated to reporting units and tested annually for impairment. Our reporting units are our four reportable segments and our payment processing operations. We will also test goodwill for impairment between annual impairment tests if indicators of potential impairment exist. We first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. Significant judgment is required in the assessment of qualitative factors including but not limited to an evaluation of macroeconomic conditions as they relate to our business, industry and market trends, as well as the overall future financial performance of our reporting units and future opportunities in the markets in which they operate. To the extent the qualitative factors indicate that there is more than 50% likelihood that the fair value is less than the carrying amount, we compare the fair value of the reporting unit with its carrying amount. If the carrying amount exceeds its fair value, impairment is indicated and we will recognize an impairment loss in an amount equal to the difference. As a result of our 2013 qualitative assessments of goodwill assigned to each of our reporting units, we concluded it was not more likely than not that the fair value of each reporting unit was less than its carrying value, respectively. There was no impairment of goodwill during 2013, 2012 or 2011.
	Intangible assets
	We amortize finite-lived intangible assets over their estimated useful lives as follows.
			Basis of amortization	Amortization
				period
				(in years)
	Customer relationships		Straight-line and accelerated (1)	15-Apr
	Marketing assets		Straight-line	8-Jan
	Acquired software and technology		Straight-line	10-Jan
	Non-compete agreements		Straight-line	5-Jan
	Database		Straight-line	8
	-1	Certain of the customer relationships are amortized on an accelerated basis.
	Indefinite-lived intangible assets consist of tradenames. We evaluate the estimated useful lives and the potential for impairment of finite and indefinite-lived intangible assets on an annual basis, or more frequently if events or circumstances indicate revised estimates of useful lives may be appropriate or that the carrying amount may not be recoverable. If the carrying amount is no longer recoverable based upon the undiscounted cash flows of the asset, the amount of impairment is the difference between the carrying amount and the fair value of the asset. Substantially all of our intangible assets were acquired in business combinations. There was no impairment of intangible assets during 2013, 2012 or 2011.
Cost Method Investments, Policy [Text Block]	'
	Cost method investments
	Cost method investments consist of investments in privately held companies where we do not have the ability to exercise significant influence or have control over the investee. We record these investments at cost and periodically test them for other-than-temporary impairment. During the years ended December 31, 2012 and 2011, we determined that our cost method investment had other-than-temporary impairment based on the projected liquidity of the investment. We used the income approach to determine the fair value of the investment in determining the impairment. An impairment loss of $0.2 million and $1.8 million was recorded in income from operations for the years ended December 31, 2012 and 2011, respectively. There were no remaining cost method investments at December 31, 2013 and 2012.
Deferred Financing Costs, Policy [Policy Text Block]	'
	Deferred financing costs
	Deferred financing costs included in other assets represent the direct costs of entering into both our revolving credit facility in June 2011 and our amended and restated credit facility in February 2012. These costs are amortized as interest expense using the effective interest method. The deferred financing fees are being amortized over the term of the credit facility.
Stock-based Compensation, Policy [Policy Text Block]	'
	Stock-based compensation
	We measure stock-based compensation cost at the grant date based on the fair value of the award and recognize it as expense over the requisite service period, which is the vesting period. We determine the fair value of stock options and stock appreciation rights using a Black-Scholes option pricing model, which requires us to use significant judgment to make estimates regarding the life of the award, volatility of our stock price, the risk-free interest rate and the dividend yield of our stock over the life of the award. We determine the fair value of awards that contain market conditions using a Monte Carlo simulation model. Changes to these estimates would result in different fair values of awards.
	We estimate the number of awards that will be forfeited and recognize expense only for those awards that we expect will ultimately vest. Significant judgment is required in determining the adjustment to compensation expense for estimated forfeitures. Compensation expense in a period could be impacted, favorably or unfavorably, by differences between estimated and actual forfeitures.
Income Taxes, Policy [Policy Text Block]	'
	Income taxes
	We make estimates and judgments in accounting for income taxes. The calculation of income tax provision requires estimates due to transactions, credits and calculations where the ultimate tax determination is uncertain. Uncertainties arise as a consequence of the actual source of taxable income between domestic and foreign locations, the outcome of tax audits and the ultimate utilization of tax credits. To the extent actual results differ from estimated amounts recorded, such differences will impact the income tax provision in the period in which the determination is made.
	We make estimates in determining tax assets and liabilities, which arise from differences in the timing of recognition of revenue and expense for tax and financial statement purposes. We record valuation allowances to reduce our deferred tax assets to the amount expected to be realized. In assessing the adequacy of a recorded valuation allowance significant judgment is required. We consider all positive and negative evidence and a variety of factors including the scheduled reversal of deferred tax liabilities, historical and projected future taxable income, and prudent and feasible tax planning strategies. If we determine there is less than a 50% likelihood that we will be able to use a deferred tax asset in the future in excess of its net carrying value, then an adjustment to the deferred tax asset valuation allowance is made to reduce income tax expense, thereby increasing net income in the period such determination was made.
	We measure and recognize uncertain tax positions. To recognize such positions we must first determine if it is more likely than not that the position will be sustained on audit. We must then measure the benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement. Significant judgment is required in the identification and measurement of uncertain tax positions.
Foreign Currency, Policy [Policy Text Block]	'
	Foreign currency
	Net assets recorded in a foreign currency are translated at the exchange rate on the balance sheet date. Revenue and expense items are translated at the average exchange rate for the year. The resulting translation adjustments are recorded in accumulated other comprehensive income.
	Gains and losses resulting from foreign currency transactions denominated in currency other than the functional currency are recorded at the approximate rate of exchange at the transaction date in other expense, net. For each of the years ended December 31, 2013 and 2012, we recorded net foreign currency losses of $0.4 million. For the year ended December 31, 2011, we recorded net a foreign currency gain of $0.3 million.
Research and Development, Policy [Policy Text Block]	'
	Research and development
	Research and development costs are expensed as incurred. These costs include human resource costs, stock-based compensation expense, third-party contractor expenses, software development tools and certain other expenses related to researching and developing new products, and allocated depreciation, facilities and IT support costs.
Software Development Costs, Internal Use Software, Policy [Policy Text Block]	'
	Software development costs
	We incur certain costs associated with the development of internal-use software and software developed related to our cloud-based solutions, which are accounted for as internal-use software. The costs incurred in the preliminary stages of internal-use software development are expensed as incurred. Once an application has reached the development stage, internal and external costs, if direct and incremental, are capitalized until the software is substantially complete and ready for its intended use. Capitalization ceases upon completion of all substantial testing. We also capitalize costs related to specific upgrades and enhancements when it is probable the expenditures will result in additional functionality. Capitalized costs for internal-use software are recorded as part of computer software costs within property and equipment. Capitalized costs for software developed for our cloud-based solutions are recorded to other assets. Internal-use software is amortized on a straight line basis over its estimated useful life, which is generally three years.
Software Development Costs, Software to be Sold, Policy [Policy Text Block]	'
	Costs for the development of software to be sold are expensed as incurred until technological feasibility has been established, at which time such costs are capitalized until the product is available for general release to customers. Capitalized software development costs include direct labor costs and fringe benefit costs attributed to programmers, software engineers and quality control teams working on products after they reach technological feasibility but before they are generally available to customers for sale. Capitalized software development costs are typically amortized over the estimated product life on a straight-line basis, which is generally three years.
	Management evaluates the useful lives of these assets on an annual basis and tests for impairment whenever events or changes in circumstances occur that could impact the recoverability of these assets.
Sales Returns and Allowance for Doubtful Accounts, Policy [Policy Text Block]	'
	Sales returns and allowance for doubtful accounts
	We maintain a reserve for returns and credits which is estimated based on several factors including historical experience, known credits yet to be issued, the aging of customer accounts and the nature of service level commitments. A considerable amount of judgment is required in assessing these factors. Provisions for sales returns and credits are charged against the related revenue items.
Accounts Receivable, Policy [Policy Text Block]	'
	Accounts receivable are recorded at original invoice amounts less an allowance for doubtful accounts, an amount we estimate to be sufficient to provide adequate protection against losses resulting from extending credit to our customers. In judging the adequacy of the allowance for doubtful accounts, we consider multiple factors including historical bad debt experience, the general economic environment, the need for specific customer reserves and the aging of our receivables. A considerable amount of judgment is required in assessing these factors and if any receivables were to deteriorate, an additional provision for doubtful accounts could be required. Accounts are written off after all means of collection are exhausted and recovery is considered remote. Provisions for doubtful accounts are recorded in general and administrative expense.
Sales Commissions, Policy [Policy Text Block]	'
	Sales commissions
	We pay sales commissions at the time contracts with customers are signed or shortly thereafter, depending on the size and duration of the sales contract. To the extent that these commissions relate to revenue not yet recognized, the amounts are recorded as deferred sales commission costs. Subsequently, the commissions are recognized as expense as the revenue is recognized.
Advertising Costs, Policy [Policy Text Block]	'
	Advertising costs
	We expense advertising costs as incurred, which was $1.1 million, $1.2 million and $1.1 million for the years ended December 31, 2013, 2012 and 2011, respectively.
Restructuring Costs, Policy [Policy Text Block]	'
	Restructuring costs
	Restructuring costs include charges for the costs of exit or disposal activities. The liability for costs associated with exit or disposal activities is measured initially at fair value and only recognized when the liability is incurred.
Impairment of Long-Lived Assets, Policy [Policy Text Block]	'
	Impairment of long-lived assets
	We review long-lived assets for impairment when events change or circumstances indicate the carrying amount may not be recoverable. Events or changes in circumstances that indicate the carrying amount may not be recoverable include, but are not limited to, a significant decrease in the market value of the business or asset acquired, a significant adverse change in the extent or manner in which the business or asset acquired is used or significant adverse change in the business climate. If such events or changes in circumstances are present, the undiscounted cash flow method is used to determine whether the asset is impaired. No impairment of long-lived assets resulted in 2013, 2012 or 2011.
Contingencies, Policy [Policy Text Block]	'
	Contingencies
	We are subject to the possibility of various loss contingencies in the normal course of business. We record an accrual for a contingency when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Often these issues are subject to substantial uncertainties and, therefore, the probability of loss and the estimation of damages are difficult to ascertain. These assessments can involve a series of complex judgments about future events and can rely heavily on estimates and assumptions that have been deemed reasonable by us. Although we believe we have substantial defenses in these matters, we could incur judgments or enter into settlements of claims that could have a material adverse effect on our consolidated financial position, results of operations or cash flows in any particular period.
Earnings Per Share, Policy [Policy Text Block]	'
	Earnings per share
	We compute basic earnings per share by dividing net income available to common stockholders by the weighted average number of common shares outstanding. Diluted earnings per share is computed by dividing net income available to common stockholders by the weighted average number of common shares and dilutive potential common shares then outstanding. Diluted earnings per share reflect the assumed exercise, settlement and vesting of all dilutive securities using the "treasury stock method" when the effect is not anti-dilutive. Potentially dilutive securities consist of shares issuable upon the exercise of stock options, settlement of stock appreciation rights and vesting of restricted stock awards and units.
Recently Adopted Accounting Pronouncements [Policy Text Block]	'
	Recently adopted accounting pronouncements
	Effective January 1, 2013, we adopted ASU 2013-02, Comprehensive Income (Topic 220), Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income, which requires that entities provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, entities are required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under GAAP to be reclassified to net income in its entirety in the same reporting period. For other amounts that are not required under GAAP to be reclassified in their entirety to net income, entities are required to cross-reference to other disclosures required under GAAP that provide additional detail about those amounts. The adoption of ASU 2013-02 did not have a material impact on our consolidated financial statements. We have presented the amounts reclassified out of accumulated other comprehensive income by component in Note 10 and Note 14 to our consolidated financial statements.
	Effective January 1, 2013, we adopted ASU 2012-02, Intangibles - Goodwill and Other (Topic 350), Testing Indefinite-Lived Intangible Assets for Impairment, which simplifies how entities test indefinite-lived intangible assets for impairment. ASU 2012-02 permits an entity to first assess qualitative factors to determine whether it is more likely than not that an indefinite-lived intangible asset is impaired as a basis for determining whether it is necessary to perform the quantitative impairment test currently required by ASC Topic 350-30 on general intangibles other than goodwill. The adoption of ASU 2012-02 did not have a material impact on our consolidated financial statements.
Recently Issued Accounting Pronouncements [Policy Text Block]	'
	Recently issued accounting pronouncements
	In July 2013, the FASB issued ASU 2013-11, Income Taxes (Topic 740), Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. Under ASU 2013-11, an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward or a similar tax loss, or a tax credit carryforward, except as follows. To the extent a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position or the tax law of the applicable jurisdiction does not require the entity to use, and the entity does not intend to use, the deferred tax asset for such purpose, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. ASU 2013-11 is effective for fiscal years and interim periods within those years, beginning after December 15, 2013. Early adoption is permitted. We do not anticipate any material impact from the adoption of ASU 2013-11.

Significant_Accounting_Policie2

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Schedule of Liabilities Measured at Fair Value on a Recurring Basis [Table Text Block]	'
	Financial liabilities measured at fair value on a recurring basis consisted of the following, as of:
			Fair value measurement using
	(in thousands)		Level 1				Level 2			Level 3			Total
	Fair value as of December 31, 2013
	Financial Liabilities:
	Derivative instruments(1)		—				427			—			427
	Total financial liabilities		$	—			$	427		$	—		$	427
	Fair value as of December 31, 2012
	Financial liabilities:
	Derivative instruments(1)		—				1,296			—			1,296
	Total financial liabilities		$	—			$	1,296		$	—		$	1,296
	-1	The fair value of our interest rate swaps was based on model-driven valuations using LIBOR rates, which are observable at commonly quoted intervals. Accordingly, our interest rate swaps are classified within Level 2 of the fair value hierarchy.
Schedule of Finite-lived Intangible Assets, Estimated Useful Life [Table Text Block]	'
	We amortize finite-lived intangible assets over their estimated useful lives as follows.
			Basis of amortization		Amortization
					period
					(in years)
	Customer relationships		Straight-line and accelerated (1)		15-Apr
	Marketing assets		Straight-line		8-Jan
	Acquired software and technology		Straight-line		10-Jan
	Non-compete agreements		Straight-line		5-Jan
	Database		Straight-line		8
	-1	Certain of the customer relationships are amortized on an accelerated basis.
Schedule of Changes in Allowance for Sales Returns and Doubtful Accounts [Table Text Block]	'
	Below is a summary of the changes in our allowance for sales returns.
	Years ended December 31,		Balance at beginning of year				Provision/adjustment			Write-off			Balance at end of year
	(in thousands)
	2013		$	7,730			$	4,132		$	(6,704	)	$	5,158
	2012		3,652				8,914			(4,836		)	7,730
	2011		2,263				5,619			(4,230		)	3,652
	Below is a summary of the changes in our allowance for doubtful accounts.
	Years ended December 31,		Balance at beginning of year				Provision/adjustment			Write-off			Balance at end of year
	(in thousands)
	2013		$	816			$	775		$	(1,136	)	$	455
	2012		261				976			(421		)	816
	2011		424				27			(190		)	261
Schedule of Changes in Deferred Sales Commission Costs [Table Text Block]	'
	Below is a summary of the changes in our deferred sales commission costs included in prepaid expenses and other current assets.
	Years ended December 31,		Balance at beginning of year				Additions			Expense			Balance at end of year
	(in thousands)
	2013		$	18,142			$	20,487		$	(18,541	)	$	20,088
	2012		16,452				19,693			(18,003		)	18,142
	2011		11,548				18,415			(13,511		)	16,452
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	'
	The following table sets forth the computation of basic and diluted earnings per share:
			Year ended December 31,
	(in thousands, except share and per share amounts)		2013				2012			2011
	Numerator:
	Net income		$	30,472			$	6,583		$	33,220
	Denominator:
	Weighted average common shares		44,684,812				44,145,535			43,522,563
	Add effect of dilutive securities:
	Employee stock-based compensation		736,328				546,310			626,491
	Weighted average common shares assuming dilution		45,421,140				44,691,845			44,149,054
	Earnings per share:
	Basic		$	0.68			$	0.15		$	0.76
	Diluted		$	0.67			$	0.15		$	0.75
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	'
	The following shares underlying stock-based awards were not included in diluted earnings per share because their inclusion would have been anti-dilutive:
			Year ended December 31,
			2013			2012			2011
	Shares excluded from calculations of diluted EPS		116,438			434,050			422,418

Business_Combinations_Tables

Business Combinations (Tables)	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Purchase price allocation	'
	The following table summarizes the allocation of the purchase price based on the estimated fair value of the assets acquired and the liabilities assumed:
	(in thousands)
	Net working capital, excluding deferred revenue	$	57,062
	Property and equipment	6,591
	Other long term assets	75
	Deferred revenue	(7,847		)
	Deferred tax liability	(33,181		)
	Intangible assets and liabilities	139,650
	Goodwill	173,324
		$	335,674
Acquired intangible assets	'
	The acquisition resulted in the identification of the following identifiable intangible assets:
		Intangible assets acquired			Weighted average amortization period
		(in thousands)			(in years)
	Customer relationships	$	53,000		15
	Marketing assets	7,800			7
	Acquired technology	69,000			8
	In-process research and development	9,100			7
	Non-compete agreements	1,440			2
	Unfavorable leasehold interests	(690		)	7
		$	139,650
Convio pro forma condensed consolidated results of operations	'
	The following unaudited pro forma condensed consolidated results of operations assume that the acquisition of Convio occurred on January 1, 2011. This unaudited pro forma financial information does not reflect any adjustments for anticipated synergies resulting from the acquisition and should not be relied upon as being indicative of the historical results that would have been attained had the transaction been consummated as of January 1, 2011, or of the results that may occur in the future.
		Year ended December 31,
	(in thousands, except per share amounts)	2012			2011
	Revenue	$	476,887		$	451,221
	Net income	$	116		$	27,697
	Basic earnings per share	$	—		$	0.64
	Diluted earnings per share	$	—		$	0.63

Property_And_Equipment_Propert

Property And Equipment Property And Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property, Plant and Equipment [Table Text Block]	'
	Property and equipment consisted of the following, as of:
		Estimated	December 31,
		useful life
	(in thousands)	(years)	2013			2012
	Equipment	5-Mar	$	3,710		$	2,430
	Computer hardware	5-Mar	59,394			56,969
	Computer software	5-Mar	19,989			17,540
	Construction in progress	-	93			1,854
	Furniture and fixtures	7-May	6,987			5,486
	Leasehold improvements	term of lease	11,375			5,104
	Total property and equipment		101,548			89,383
	Less: accumulated depreciation		(51,998		)	(40,320		)
	Property and equipment, net of depreciation		$	49,550		$	49,063

Goodwill_And_Other_Intangible_1

Goodwill And Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule of Goodwill [Table Text Block]	'
	The change in goodwill for each reportable segment during the year ended December 31, 2013, consisted of the following:
	(in thousands)	ECBU				GMBU				IBU			Target Analytics		Other		Total
	Balance at December 31, 2012	$	148,322			$	75,149			$	6,311		$	33,177	$	2,096	$	265,055
	Additions related to business combinations	—				—				344			—		—		344
	Adjustments related to prior year business combinations	(494		)		(193		)		—			—		—		(687		)
	Effect of foreign currency translation	—				—				(113		)	—		—		(113		)
	Balance at December 31, 2013	$	147,828			$	74,956			$	6,542		$	33,177	$	2,096	$	264,599
Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]	'
	We have recorded intangible assets acquired in various business combinations based on their fair values at the date of acquisition. The table below sets forth the balances of each class of intangible asset and related amortization as of:
			December 31,
	(in thousands)		2013				2012
	Finite-lived gross carrying amount
	Customer relationships		$	102,030			$	101,878
	Marketing assets		10,384				10,296
	Acquired software and technology		94,144				94,378
	Non-compete agreements		2,128				3,979
	Database		4,275				4,275
	Total finite-lived gross carrying amount		212,961				214,806
	Accumulated amortization
	Customer relationships		(33,442		)		(24,994		)
	Marketing assets		(4,529		)		(2,852		)
	Acquired software and technology		(27,671		)		(14,787		)
	Non-compete agreements		(1,739		)		(2,727		)
	Database		(3,332		)		(2,798		)
	Total accumulated amortization		(70,713		)		(48,158		)
	Indefinite-lived gross carrying amount
	Marketing assets		1,193				1,389
	Total intangible assets, net		$	143,441			$	168,037
Schedule Of Amortization Expense [Table Text Block]	'
	The following table summarizes amortization expense:
		Year ended December 31,
	(in thousands)	2013				2012				2011
	Included in cost of revenue:
	Cost of license fees	$	421			$	485			$	635
	Cost of subscriptions	18,578				11,969				3,341
	Cost of services	2,528				1,992				1,572
	Cost of maintenance	457				722				975
	Cost of other revenue	75				75				75
	Total included in cost of revenue	22,059				15,243				6,598
	Included in operating expenses	2,539				2,106				980
	Total	$	24,598			$	17,349			$	7,578
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	'
	The following table outlines the estimated future amortization expense for each of the next five years for our finite-lived intangible assets as of December 31, 2013:
	Year ended December 31,	Amortization expense
		(in thousands)
	2014	$	22,573
	2015	22,203
	2016	21,799
	2017	19,484
	2018	18,123
	Total	$	104,182

Prepaid_Expenses_And_Other_Ass1

Prepaid Expenses And Other Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]	'
Schedule Of Prepaid Expenses And Other Assets [Table Text Block]	'
	Prepaid expenses and other assets
	Prepaid expenses and other assets consisted of the following as of:
	(in thousands)	December 31, 2013		December 31, 2012
	Deferred sales commissions	$	20,088	$	18,142
	Prepaid software maintenance	6,875		5,530
	Taxes, prepaid and receivable	1,112		7,398
	Deferred professional services costs	7,445		8,057
	Software development costs	4,172		1,994
	Other assets	9,674		9,312
	Total prepaid expenses and other assets	49,366		50,433
	Less: Long-term portion	19,251		9,844
	Total prepaid expenses and other current assets	$	30,115	$	40,589
	Prepaid expenses and other assets consisted of the following as of:
	(in thousands)	December 31, 2013		December 31, 2012
	Deferred sales commissions	$	20,088	$	18,142
	Prepaid software maintenance	6,875		5,530
	Taxes, prepaid and receivable	1,112		7,398
	Deferred professional services costs	7,445		8,057
	Software development costs	4,172		1,994
	Other assets	9,674		9,312
	Total prepaid expenses and other assets	49,366		50,433
	Less: Long-term portion	19,251		9,844
	Total prepaid expenses and other current assets	$	30,115	$	40,589

Accrued_Expenses_And_Other_Lia1

Accrued Expenses And Other Liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
Accrued Expenses And Other Current Liabilities [Abstract]	'
Schedule Of Accrued Expenses And Other Liabilities [Table Text Block]	'
	Accrued expenses and other liabilities consisted of the following as of:
	(in thousands)	December 31, 2013		December 31, 2012
	Taxes payable	$	5,430	$	7,607
	Accrued commissions and salaries	7,127		5,905
	Accrued bonuses	9,258		11,966
	Customer credit balances	3,281		4,577
	Accrued software and maintenance	970		3,875
	Unrecognized tax benefit	3,698		3,846
	Other liabilities	17,334		13,501
	Total accrued expenses and other liabilities	47,098		51,277
	Less: Long-term portion	6,655		5,281
	Total accrued expenses and other current liabilities	$	40,443	$	45,996

Deferred_Revenue_Tables

Deferred Revenue (Tables)	12 Months Ended
	Dec. 31, 2013
Deferred Revenue Disclosure [Abstract]	'
Deferred Revenue, by Arrangement, Disclosure [Table Text Block]	'
	Deferred revenue consisted of the following as of:
	(in thousands)	31-Dec-13		31-Dec-12
	Maintenance	$	85,219	$	81,741
	Subscriptions	72,480		65,850
	Services	32,153		36,904
	License fees and other	722		523
	Total deferred revenue	190,574		185,018
	Less: Deferred revenue, net of current portion	9,099		11,119
	Deferred revenue, current portion	$	181,475	$	173,899

Debt_Tables

Debt (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Schedule of Long-term Debt Instruments [Table Text Block]	'
	The following table summarizes our debt balances and the related weighted average effective interest rates, which include our interest cost incurred and the effect of interest rate swap agreements.
		Debt balance at				Weighted average effective interest rate at
	(in thousands, except percentages)	December 31, 2013		December 31, 2012		December 31, 2013		December 31, 2012
	Credit facility:
	Revolving credit loans	$	70,408	$	123,000	1.95	%	2.68	%
	Term loans	82,500		92,500		2.39	%	3.14	%
	Total debt	152,908		215,500		2.14	%	2.88	%
	Less: Debt, current portion	17,158		10,000		2.39	%	3.14	%
	Debt, net of current portion	$	135,750	$	205,500	2.11	%	2.86	%
Schedule of Maturities of Long-term Debt [Table Text Block]	'
	As of December 31, 2013, the required annual maturities related to our credit facility were as follows:
	Year ending December 31,	Annual maturities
	(in thousands)
	2014	$	17,158
	2015	15,000
	2016	15,000
	2017	105,750
	Total required maturities	$	152,908

Derivative_Instruments_Tables

Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Schedule Of Derivative Instruments In Statement Of Financial Position, Fair Value [Table Text Block]	'
	The fair values of our derivative instruments were as follows as of:
				Liability fair value at
	(in thousands)	Balance sheet location		December 31, 2013			31-Dec-12
	Derivative instruments designated as hedging instruments:
	Interest rate swaps, current portion	Accrued expenses and other current liabilities		$	46		$	—
	Interest rate swaps, long-term portion	Other liabilities		381			1,296
	Total derivative instruments designated as hedging instruments			$	427		$	1,296
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]	'
	The effects of derivative instruments in cash flow hedging relationships were as follows:
		Loss recognized in accumulated other comprehensive loss as of				Location of loss reclassified from accumulated other comprehensive loss into income	Amount reclassified from accumulated other comprehensive loss into income
		31-Dec-13					Year ended December 31,
	(in thousands)						2013
	Interest rate swaps	$	427			Interest expense	$	794
							Year ended December 31,
		31-Dec-12					2012
	Interest rate swaps	$	1,296			Interest expense	$	466

Commitments_And_Contingencies_1

Commitments And Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Schedule Of Future Minimum Lease Commitments Related To Operating And Capital Leases [Table Text Block]	'
	As of December 31, 2013, the future minimum lease commitments related to lease agreements, net of related sublease commitments and lease incentives, were as follows:
	Year ended December 31,	Operating
	(in thousands)	leases
	2014	$	10,027
	2015	9,872
	2016	9,570
	2017	9,616
	2018	9,819
	Thereafter	41,466
	Total minimum lease payments	$	90,370

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	'
	The following summarizes the components of income tax expense:
		Year ended December 31,
	(in thousands)	2013				2012				2011
	Current taxes:
	U.S. Federal	$	78			$	(1,764	)		$	3,434
	U.S. State and local	1,127				410				1,030
	International	(221		)		511				40
	Total current taxes	984				(843		)		4,504
	Deferred taxes:
	U.S. Federal	14,394				8,943				11,943
	U.S. State and local	(694		)		(796		)		1,536
	International	173				(562		)		54
	Total deferred taxes	13,873				7,585				13,533
	Total income tax provision	$	14,857			$	6,742			$	18,037
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	'
	The following summarizes the components of income before provision for income taxes:
		Year ended December 31,
	(in thousands)	2013				2012				2011
	U.S.	$	48,137			$	16,793			$	50,946
	International	(2,808		)		(3,468		)		311
	Income before provision for income taxes	$	45,329			$	13,325			$	51,257
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	'
	A reconciliation between the effect of applying the federal statutory rate and the effective income tax rate used to calculate our income tax provision is as follows:
		Year ended December 31,
		2013			2012			2011
	Federal statutory rate	35	%		35	%		35	%
	Effect of:
	State income taxes, net of federal benefit	5.2			8.3			4.2
	Change in state income tax rate applied to deferred tax balances	(2.5	)		(2.2	)		0.6
	Fixed assets	(1.0	)		(7.6	)		—
	Unrecognized tax benefit	0.3			2.9			(0.3	)
	State credits, net of federal benefit	(2.9	)		(1.7	)		(2.2	)
	Change in valuation reserve	0.7			4.1			0.7
	Federal credits generated	(5.1	)		—			(2.7	)
	Foreign tax rate	0.6			2.3			—
	Acquisition costs	—			10.8			0.6
	Foreign tax credits	(0.5	)		(3.0	)		—
	Section 162(m) limitation	1.8			0.1			(0.4	)
	Other	1.2			1.6			(0.3	)
	Income tax provision effective rate	32.8	%		50.6	%		35.2	%
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	'
	The significant components of our deferred tax assets and liabilities were as follows:
		December 31,
	(in thousands)	2013				2012
	Deferred tax assets relating to:
	Federal, state and foreign net operating loss carryforwards	$	18,144			$	30,839
	Federal, state and foreign tax credits	18,947				15,438
	Intangible assets	5,849				13,706
	Effect of expensing nonqualified stock options and restricted stock	3,818				7,634
	Accrued bonuses	3,286				4,361
	Deferred revenue	3,850				4,342
	Allowance for doubtful accounts	1,938				3,161
	Other	4,286				8,321
	Total deferred tax assets	60,118				87,802
	Deferred tax liabilities relating to:
	Intangible assets	(55,018		)		(65,882		)
	Fixed assets	(11,557		)		(12,643		)
	Other	(5,752		)		(7,318		)
	Total deferred tax liabilities	(72,327		)		(85,843		)
	Valuation allowance	(11,042		)		(10,651		)
	Net deferred tax asset (liabilities)	$	(23,251	)		$	(8,692	)
Summary of Valuation Allowance [Table Text Block]	'
	The following table illustrates the change in our deferred tax asset valuation allowance:
	(in thousands)	Balance				Acquisition				Charges to			Balance at
		at beginning				related				expense			end of
	Year ended December 31,	of year				change							year
	2013	$	10,651			$	635			$	(244	)	$	11,042
	2012	10,079				286				286			10,651
	2011	9,614				—				465			10,079
Summary of Income Tax Contingencies [Table Text Block]	'
	The following table sets forth the change to our unrecognized tax benefit for the years ended December 31, 2013, 2012 and 2011:
		December 31,
	(in thousands)	2013				2012				2011
	Balance at beginning of year	$	3,846			$	1,777			$	1,414
	Increases from prior period positions	1,254				2,766				87
	Decreases in prior year position	(813		)		(93		)		(9		)
	Increases from current period positions	224				—				285
	Lapse of statute of limitations	(813		)		(604		)		—
	Balance at end of year	$	3,698			$	3,846			$	1,777

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Schedule of Share-based Compensation, Activity [Table Text Block]	'
	The following table sets forth the number of awards outstanding for each award type as of:
		Outstanding at December 31,
	Award type	2013			2012
	Stock options	24,158			60,775
	Restricted stock awards	1,015,934			1,202,121
	Restricted stock units	130,512			389,913
	Stock appreciation rights	1,292,996			2,786,828
Summary of Stock-Based Compensation Expense [Table Text Block]	'
	The following table summarizes stock-based compensation expense:
		Year ended December 31,
	(in thousands)	2013				2012				2011
	Included in cost of revenue:
	Cost of subscriptions	$	1,032			$	860			$	571
	Cost of services	2,464				2,786				1,966
	Cost of maintenance	545				538				741
	Total included in cost of revenue	4,041				4,184				3,278
	Included in operating expenses:
	Sales and marketing	2,351				2,527				1,325
	Research and development	3,731				3,556				3,039
	General and administrative	6,787				8,973				7,242
	Total included in operating expenses	12,869				15,056				11,606
	Total	$	16,910			$	19,240			$	14,884
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding [Table Text Block]	'
	The following table summarizes the options outstanding under each of our stock-based compensation plans as of December 31, 2013.
	Plan	Date of adoption		Options			Range of
				outstanding			exercise prices
	2004 Stock Plan	March 23, 2004		11,213			$8.60-$13.05
	Kintera 2003 Plan	July 8, 2008	-1	3,977			$10.59-$19.26
	Convio 1999 Plan	5-May-12	-1	6,538			$9.10-$15.54
	Convio 2009 Plan	5-May-12	-1	2,430			$15.62-$18.20
	Total			24,158
	-1	In connection with the acquisitions of Kintera and Convio, we assumed certain stock options issued and outstanding at the date of acquisition.
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	'
	The following table summarizes our outstanding stock options as of December 31, 2013, and changes during the year then ended:
	Options	Share			Weighted				Weighted		Aggregate
		options			average				average		intrinsic value
					exercise				remaining		(in thousands)
					price				contractual
									term
									(in years)
	Outstanding at January 1, 2013	60,775			$	11.09
	Exercised	(35,831	)		10.76
	Forfeited	(513	)		14.72
	Expired	(273	)		13.25
	Outstanding at December 31, 2013	24,158			$	11.49			3.1		$	631
	Unvested and expected to vest at December 31, 2013	388			$	17.75			6.3		$	8
	Vested and exercisable at December 31, 2013	23,738			$	11.38			3.1		$	624
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]	'
	The following table summarizes our unvested restricted stock units as of December 31, 2013, and changes during the year then ended:
	Restricted stock units	Restricted			Weighted
		stock units			average
					grant-date
					fair value
	Unvested at January 1, 2013	389,913			$	27.55
	Granted	25,427			35.7
	Forfeited	(64,863	)		27.69
	Expired	(30,049	)		24.7
	Vested	(189,916	)		28.13
	Unvested at December 31, 2013	130,512			$	28.84
	The following table summarizes our unvested restricted stock awards as of December 31, 2013, and changes during the year then ended:
	Restricted stock awards	Restricted			Weighted
		stock awards			average
					grant-date
					fair value
	Unvested at January 1, 2013	1,202,121			$	24.58
	Granted	458,462			35.31
	Vested	(416,900	)		24.86
	Forfeited	(227,749	)		24.55
	Unvested at December 31, 2013	1,015,934			$	29.3
Schedule of Share-based Compensation, Stock Appreciation Rights Award Activity [Table Text Block]	'
	The following table summarizes our outstanding SARs as of December 31, 2013, and changes during the year then ended:
	Stock appreciation rights	Stock			Weighted				Weighted		Aggregate
		appreciation			average				average		intrinsic value
		rights			exercise				remaining		(in thousands)
					price				contractual
									term
									(in  years)
	Outstanding at January 1, 2013	2,786,828			$	23.87
	Granted	60,367			28.47
	Exercised	(1,270,064	)		23.53
	Forfeited	(282,552	)		24.79
	Expired	(1,583	)		$	26.17
	Outstanding at December 31, 2013	1,292,996			$	24.21			5		$	17,375
	Unvested and expected to vest at December 31, 2013	844,760			$	24.21			5.5		$	11,350
	Vested and exercisable at December 31, 2013	418,809			$	24.15			3.8		$	5,653
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	'
	Significant assumptions used in the Black-Scholes option pricing model for SARs granted in 2013, 2012 and 2011 were as follows:
		Year ended December 31,
		2013			2012			2011
	Volatility	32% to 35%			35% to 41%			41% to 42%
	Dividend yield	1.70%			1.70%			1.7% to 1.8%
	Risk-free interest rate	0.6% to 0.8%			0.5% to 0.6%			0.6% to 1.9%
	Expected SAR life in years	4			4			4

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Schedule Of Dividends Payable [Table Text Block]	'
	The following table provides information with respect to quarterly dividends paid on common stock during the year ended December 31, 2013.
	Declaration Date	Dividend per Share			Record Date	Payable Date
	Feb-13	$	0.12		28-Feb	15-Mar
	May-13	$	0.12		28-May	14-Jun
	Aug-13	$	0.12		28-Aug	13-Sep
	Nov-13	$	0.12		27-Nov	13-Dec
	In February 2014, our Board of Directors declared a first quarter dividend of $0.12 per share payable on March 14, 2014 to stockholders of record on February 28, 2014.
Schedule of Accumulated Other Comprehensive Loss [Table Text Block]	'
	The changes in accumulated other comprehensive loss by component, consisted of the following:
	(in thousands)	Gains and losses on cash flow hedges				Foreign currency translation adjustment			Total
	Balance at December 31, 2012	$	(791	)		$	(1,182	)	$	(1,973	)
	Other comprehensive (loss) income before reclassifications	(259		)		53			(206		)
	Amounts reclassified from accumulated other comprehensive loss to interest expense(1)	794				—			794
	Net current-period other comprehensive income	535				53			588
	Balance at December 31, 2013	$	(256	)		$	(1,129	)	$	(1,385	)
	-1	Included in the amount reclassified from accumulated other comprehensive loss during 2013 was an income tax benefit of $0.3 million.

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Reportable Segment Financial Results [Table Text Block]	'
	Summarized reportable segment financial results were as follows:
		Year ended December 31,
	(in thousands)	2013		2012		2011
	Revenue by segment:
	ECBU	$	195,570	$	165,161	$	127,945
	GMBU	225,352		203,178		171,999
	IBU	41,488		40,068		33,841
	Target Analytics	39,845		37,453		35,769
	Other(1)	1,562		1,559		1,314
	Total revenue	$	503,817	$	447,419	$	370,868
	Segment operating income(2):
	ECBU	$	103,443	$	74,419	$	53,141
	GMBU	131,707		121,985		101,572
	IBU	8,082		5,265		6,922
	Target Analytics	16,582		17,619		16,882
	Other(1)	1,342		1,485		1,203
		261,156		220,773		179,720
	Less:
	Corporate unallocated costs(3)	168,106		164,749		106,330
	Stock-based compensation costs	16,910		19,240		14,884
	Amortization expense	24,598		17,349		7,578
	Interest expense (income), net	5,751		5,718		17
	Other expense (income), net	462		392		(346		)
	Income before provision for income taxes	$	45,329	$	13,325	$	51,257
	-1	Other includes revenue and the related costs from the sale of products and services not directly attributable to an operating segment.
	-2	Segment operating income includes direct, controllable costs related to the sale of products and services by the reportable segment, except for IBU, which includes operating costs from our foreign locations such as sales, marketing, general, administrative, depreciation and facilities costs.
	-3	Corporate unallocated costs include research and development, depreciation expense, and certain corporate sales, marketing, general and administrative expenses.
Revenue from External Customers by Products and Services [Table Text Block]	'
	Revenue by product and service group for each of our reportable segments were as follows:
		Year ended December 31,
	(in thousands)	2013		2012		2011
	ECBU revenue:
	License fees	$	7,374	$	7,888	$	6,741
	Subscriptions	97,392		73,246		45,572
	Services	48,471		44,882		39,662
	Maintenance	39,503		35,905		32,759
	Other	2,830		3,240		3,211
	Total ECBU revenue	$	195,570	$	165,161	$	127,945
	GMBU revenue:
	License fees	$	6,718	$	9,068	$	8,742
	Subscriptions	88,766		65,482		41,017
	Services	41,228		39,036		34,820
	Maintenance	84,763		86,026		83,963
	Other	3,877		3,566		3,457
	Total GMBU revenue	$	225,352	$	203,178	$	171,999
	IBU revenue:
	License fees	$	2,510	$	3,476	$	3,830
	Subscriptions	12,743		10,038		4,575
	Services	11,337		12,230		11,472
	Maintenance	14,056		13,673		13,484
	Other	842		651		480
	Total IBU revenue	$	41,488	$	40,068	$	33,841
	Target Analytics revenue:
	License fees	$	113	$	119	$	162
	Subscriptions	13,755		13,320		12,292
	Services	25,495		23,452		22,810
	Maintenance	423		497		396
	Other	59		65		109
	Total Target Analytics revenue	$	39,845	$	37,453	$	35,769
	Other revenue:
	License fees	$	—	$	—	$	—
	Subscriptions	—		16		88
	Services	17		26		17
	Maintenance	—		—		2
	Other	1,545		1,517		1,207
	Total Other revenue	$	1,562	$	1,559	$	1,314
	Total consolidated revenue	$	503,817	$	447,419	$	370,868
Schedule of Revenues from External Customers and Long-Lived Assets by Geographical Areas [Table Text Block]	'
	The following table presents revenue by geographic region based on country of invoice origin and identifiable, long-lived assets by geographic region based on the location of the assets.
	(in thousands)	United States		Canada		Europe			Asia Pacific		Total Foreign		Total
	Revenue from external customers:
	2013	$	439,887	$	23,344	$	24,107		$	16,479	$	63,930	$	503,817
	2012	386,376		22,770		23,022			15,251		61,043		447,419
	2011	317,305		21,725		21,162			10,676		53,563		370,868
	Property and equipment:
	December 31, 2013	$	47,367	$	72	$	1,694		$	417	$	2,183	$	49,550
	December 31, 2012	47,826		188		810			239		1,237		49,063

Quarterly_Results_Quarterly_Re

Quarterly Results Quarterly Results (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Results [Abstract]	'
Schedule of Quarterly Financial Information [Table Text Block]	'
	Quarterly results (unaudited)
	(in thousands, except per share data)	December 31, 2013		September 30, 2013		June 30, 2013			March 31, 2013
	Total revenue	$	134,872	$	127,854	$	125,468		$	115,623
	Gross profit	68,514		71,740		68,855			62,045
	Income from operations	14,622		18,008		14,318			4,594
	Income before provision for income taxes	13,287		16,490		12,532			3,020
	Net income	11,790		9,393		6,623			2,666
	Earnings per share
	Basic	$	0.26	$	0.21	$	0.15		$	0.06
	Diluted	$	0.26	$	0.21	$	0.15		$	0.06
	(in thousands, except per share data)	December 31, 2012		September 30, 2012		June 30, 2012			March 31, 2012
	Total revenue	$	120,051	$	122,472	$	110,190		$	94,706
	Gross profit	64,299		67,344		59,685			53,631
	Income (loss) from operations	9,875		6,185		(1,877		)	5,252
	Income (loss) before provision for income taxes	7,342		4,629		(3,446		)	4,800
	Net income (loss)	3,270		2,825		(2,271		)	2,759
	Earnings (loss) per share
	Basic	$	0.07	$	0.06	$	(0.05	)	$	0.06
	Diluted	$	0.07	$	0.06	$	(0.05	)	$	0.06

Restructuring_Tables

Restructuring (Tables)	12 Months Ended
	Dec. 31, 2013
Restructuring and Related Activities [Abstract]	'
Schedule of Restructuring Costs	'
	The following table summarizes our restructuring costs related to the reduction in workforce as of December 31, 2013:
		Total costs expected to be incurred		Costs incurred during the year ended		Cumulative costs incurred as of
	(in thousands)			December 31, 2013
	By component:
	Employee severance costs	$	3,187	$	3,187	$	3,187
	By reportable segment:
	ECBU	$	828	$	828	$	828
	GMBU	290		290		290
	Target Analytics	136		136		136
	Other	1,933		1,933		1,933
		$	3,187	$	3,187	$	3,187
	The following table summarizes our restructuring costs related to our San Diego office transition as of December 31, 2013:
		Total costs expected to be incurred		Costs incurred during the year ended		Cumulative costs incurred as of
	(in thousands)			December 31, 2013
	By component:
	Employee severance and retention costs	$	295	$	120	$	295
	Employee relocation costs	187		187		187
		482		307		482
	By reportable segment:
	Other	$	482	$	307	$	482
Schedule of Restructuring Reserve by Type of Cost	'
	The change in our liability related to the reduction in workforce during 2013, consisted of the following:
		Accrued at		Increases for incurred costs		Costs paid			Accrued at
	(in thousands)	December 31, 2012							December 31, 2013
	Employee severance costs	$	—	$	3,187	$	(3,187	)	$	—
	The change in our liability related to our San Diego office transition during the year ended December 31, 2013, consisted of the following:
		Accrued at		Increases for incurred costs		Costs paid			Accrued at
	(in thousands)	December 31, 2012							December 31, 2013
	Employee severance and retention costs	$	175	$	120	$	(295	)	$	—
	Employee relocation costs	—		187		(187		)	—
		$	175	$	307	$	(482	)	$	—

Organization_Details

Organization (Details)	Dec. 31, 2013
	Customers
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Number of active customers distributed across verticals	29,000

Significant_Accounting_Policie3

Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Significant Accounting Policies [Line Items]	'	'	'
Contract term (in years) of the maintenance services	'1 year	'	'
Cost-method Investments, Other than Temporary Impairment	$0	$200,000	$1,800,000
Foreign Currency Transaction Gain (Loss), before Tax	-400,000	-400,000	300,000
Capitalized Computer Software, Net	4,200,000	2,000,000	'
Capitalized Computer Software, Amortization	1,000,000	400,000	100,000
Advertising costs	1,100,000	1,200,000	1,100,000
Carrying Amount of Cost Method Investments	$0	$0	'
Minimum [Member]	'	'	'
Significant Accounting Policies [Line Items]	'	'	'
Recognition period (in years) of revenue from hosted services	'1 year	'	'
Recognition period (in years) of revenue from hosted applications	'1 year	'	'
Maximum [Member]	'	'	'
Significant Accounting Policies [Line Items]	'	'	'
Number of days to exceed for customary payment terms	'90 days	'	'
Recognition period (in years) of revenue from hosted services	'3 years	'	'
Recognition period (in years) of revenue from hosted applications	'3 years	'	'

Summary_Of_Significant_Account

Summary Of Significant Accounting Policies Significant Accounting Policies (Liabilities Measured at Fair Value on a Recurring Basis) (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'		'
Derivative instruments	$427	[1]	$1,296	[1]
Total financial liabilities	427		1,296
Fair Value, Inputs, Level 1 [Member]	'		'
Finite-Lived Intangible Assets [Line Items]	'		'
Derivative instruments	0	[1]	0	[1]
Total financial liabilities	0		0
Fair Value, Inputs, Level 2 [Member]	'		'
Finite-Lived Intangible Assets [Line Items]	'		'
Derivative instruments	427	[1]	1,296	[1]
Total financial liabilities	427		1,296
Fair Value, Inputs, Level 3 [Member]	'		'
Finite-Lived Intangible Assets [Line Items]	'		'
Derivative instruments	0	[1]	0	[1]
Total financial liabilities	$0		$0
[1]	The fair value of our interest rate swaps was based on model-driven valuations using LIBOR rates, which are observable at commonly quoted intervals. Accordingly, our interest rate swaps are classified within Level 2 of the fair value hierarchy.

Significant_Accounting_Policie4

Significant Accounting Policies (Finite-Lived Intangible Assets by Major Class) (Details)	12 Months Ended
	Dec. 31, 2013
Customer Relationships [Member] | Minimum [Member]	'
Significant Accounting Policies [Line Items]	'
Finite-Lived Intangible Assets, Amortization Method	'Straight-lineB andB accelerated
Finite-Lived Intangible Asset, Useful Life	'4 years
Customer Relationships [Member] | Maximum [Member]	'
Significant Accounting Policies [Line Items]	'
Finite-Lived Intangible Asset, Useful Life	'15 years
Marketing Assets [Member] | Minimum [Member]	'
Significant Accounting Policies [Line Items]	'
Finite-Lived Intangible Assets, Amortization Method	'Straight-line
Finite-Lived Intangible Asset, Useful Life	'1 year
Marketing Assets [Member] | Maximum [Member]	'
Significant Accounting Policies [Line Items]	'
Finite-Lived Intangible Asset, Useful Life	'8 years
Acquired Software and Technology [Member] | Minimum [Member]	'
Significant Accounting Policies [Line Items]	'
Finite-Lived Intangible Assets, Amortization Method	'Straight-line
Finite-Lived Intangible Asset, Useful Life	'1 year
Acquired Software and Technology [Member] | Maximum [Member]	'
Significant Accounting Policies [Line Items]	'
Finite-Lived Intangible Asset, Useful Life	'10 years
Non-compete Agreements [Member] | Minimum [Member]	'
Significant Accounting Policies [Line Items]	'
Finite-Lived Intangible Assets, Amortization Method	'Straight-line
Finite-Lived Intangible Asset, Useful Life	'1 year
Non-compete Agreements [Member] | Maximum [Member]	'
Significant Accounting Policies [Line Items]	'
Finite-Lived Intangible Asset, Useful Life	'5 years
Database [Member]	'
Significant Accounting Policies [Line Items]	'
Finite-Lived Intangible Assets, Amortization Method	'Straight-line
Finite-Lived Intangible Asset, Useful Life	'8 years

Significant_Accounting_Policie5

Significant Accounting Policies (Changes in Allowance for Sales Returns and Doubtful Accounts) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for Sales Returns [Member]	'	'	'
Allowance for Sales Returns and Doubtful Accounts [Roll Forward]	'	'	'
Balance at beginning of year	$7,730	$3,652	$2,263
Provision/adjustment	4,132	8,914	5,619
Write-off	-6,704	-4,836	-4,230
Balance at end of year	5,158	7,730	3,652
Allowance for Doubtful Accounts [Member]	'	'	'
Allowance for Sales Returns and Doubtful Accounts [Roll Forward]	'	'	'
Balance at beginning of year	816	261	424
Provision/adjustment	775	976	27
Write-off	-1,136	-421	-190
Balance at end of year	$455	$816	$261

Significant_Accounting_Policie6

Significant Accounting Policies (Changes in Deferred Sales Commision Costs) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deferred sales commissions [Roll Forward]	'	'	'
Balance at beginning of year	$18,142	$16,452	$11,548
Additions	20,487	19,693	18,415
Expense	-18,541	-18,003	-13,511
Balance at end of year	$20,088	$18,142	$16,452

Significant_Accounting_Policie7

Significant Accounting Policies (Computation Of Basic And Diluted Earning Per Share) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounting Policies [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Net income	$11,790	$9,393	$6,623	$2,666	$3,270	$2,825	($2,271)	$2,759	$30,472	$6,583	$33,220
Weighted average common shares	'	'	'	'	'	'	'	'	44,684,812	44,145,535	43,522,563
Employee stock-based compensation	'	'	'	'	'	'	'	'	736,328	546,310	626,491
Weighted average common shares assuming dilution	'	'	'	'	'	'	'	'	45,421,140	44,691,845	44,149,054
Earnings per share, Basic	$0.26	$0.21	$0.15	$0.06	$0.07	$0.06	($0.05)	$0.06	$0.68	$0.15	$0.76
Earnings per share, Diluted	$0.26	$0.21	$0.15	$0.06	$0.07	$0.06	($0.05)	$0.06	$0.67	$0.15	$0.75

Significant_Accounting_Policie8

Significant Accounting Policies (Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounting Policies [Abstract]	'	'	'
Shares excluded from calculations of diluted EPS	116,438	434,050	422,418

Business_Combinations_Details

Business Combinations (Details) (USD $)	12 Months Ended				0 Months Ended	12 Months Ended	0 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	4-May-12	Dec. 31, 2012	4-May-12	4-May-12	Dec. 31, 2011
		ECBU [Member]	GMBU [Member]	IBU [Member]	Convio, Inc [Member]	Convio, Inc [Member]	Convio, Inc [Member]	Convio, Inc [Member]	Two Thousand And Eleven Acquisitions [Member]
							ECBU [Member]	GMBU [Member]	entity
Business Acquisition [Line Items]	'	'	'	'	'	'	'	'	'
Total cash consideration paid for the acquisitions	'	'	'	'	$329,800,000	'	'	'	$24,200,000
Fair value of unvested equity awards assumed in acquisition	'	'	'	'	5,900,000	'	'	'	'
Total paid for the acquisitions	'	'	'	'	335,700,000	'	'	'	'
Acquisition-related costs	'	'	'	'	'	6,400,000	'	'	'
Outstanding borrowings under the credit facility	'	'	'	'	312,000,000	'	'	'	'
Estimated fair value of accounts receivable acquired	'	'	'	'	12,800,000	'	'	'	'
Additions related to business combinations	$344,000	$0	$0	$344,000	'	'	$124,800,000	$48,500,000	'
Number of Businesses Acquired	'	'	'	'	'	'	'	'	2

Business_Combinations_Purchase

Business Combinations (Purchase Price Allocation) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	4-May-12
In Thousands, unless otherwise specified			Convio, Inc [Member]
Business Acquisition [Line Items]	'	'	'
Net working capital, excluding deferred revenue	'	'	$57,062
Property and equipment	'	'	6,591
Other long term assets	'	'	75
Deferred revenue	'	'	-7,847
Deferred tax liability	'	'	-33,181
Intangible assets and liabilities	'	'	139,650
Goodwill	264,599	265,055	173,324
Total paid for acquisition	'	'	$335,674

Business_Combinations_Acquired

Business Combinations (Acquired Intangible Assets) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	4-May-12
Finite and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]	'	'
Goodwill, Acquired During Period	344	'
Convio, Inc [Member]	'	'
Finite and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]	'	'
Intangible assets and liabilities, Acquired During Period	'	139,650
Convio, Inc [Member] | Customer Relationships [Member]	'	'
Finite and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]	'	'
Intangible assets and liabilities, Acquired During Period	'	53,000
Weighted average amortization period	'15 years	'
Convio, Inc [Member] | Marketing Assets [Member]	'	'
Finite and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]	'	'
Intangible assets and liabilities, Acquired During Period	'	7,800
Weighted average amortization period	'7 years	'
Convio, Inc [Member] | Acquired Technology [Member]	'	'
Finite and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]	'	'
Intangible assets and liabilities, Acquired During Period	'	69,000
Weighted average amortization period	'8 years	'
Convio, Inc [Member] | In-process Research and Development [Member]	'	'
Finite and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]	'	'
Intangible assets and liabilities, Acquired During Period	'	9,100
Weighted average amortization period	'7 years	'
Convio, Inc [Member] | Non-compete Agreements [Member]	'	'
Finite and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]	'	'
Intangible assets and liabilities, Acquired During Period	'	1,440
Weighted average amortization period	'2 years	'
Convio, Inc [Member] | Unfavorable Leasehold Interests [Member]	'	'
Finite and Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Line Items]	'	'
Intangible assets and liabilities, Acquired During Period	'	($690)
Weighted average amortization period	'7 years	'

Business_Combinations_Pro_Form

Business Combinations (Pro Forma Financial Information) (Details) (Convio, Inc [Member], USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Convio, Inc [Member]	'	'
Business Acquisition [Line Items]	'	'
Revenue	$476,887	$451,221
Net income (loss)	$116	$27,697
Basic earnings (loss) per share	$0	$0.64
Diluted earnings (loss) per share	$0	$0.63

Property_And_Equipment_Details

Property And Equipment (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	$101,548,000	$89,383,000	'
Less: accumulated depreciation	-51,998,000	-40,320,000	'
Property, Plant and Equipment, Net	49,550,000	49,063,000	'
Depreciation	17,500,000	14,500,000	9,400,000
Equipment [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	3,710,000	2,430,000	'
Computer Hardware [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	59,394,000	56,969,000	'
Computer Software [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	19,989,000	17,540,000	'
Construction in Progress [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	93,000	1,854,000	'
Estimated useful life (years)	'-	'	'
Furniture and Fixtures [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	6,987,000	5,486,000	'
Leasehold Improvements [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	$11,375,000	$5,104,000	'
Estimated useful life (years)	'termB ofB lease	'	'
Minimum [Member] | Equipment [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Estimated useful life (years)	'3	'	'
Minimum [Member] | Computer Hardware [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Estimated useful life (years)	'3	'	'
Minimum [Member] | Computer Software [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Estimated useful life (years)	'3	'	'
Minimum [Member] | Furniture and Fixtures [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Estimated useful life (years)	'5	'	'
Maximum [Member] | Equipment [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Estimated useful life (years)	'5	'	'
Maximum [Member] | Computer Hardware [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Estimated useful life (years)	'5	'	'
Maximum [Member] | Computer Software [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Estimated useful life (years)	'5	'	'
Maximum [Member] | Furniture and Fixtures [Member]	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Estimated useful life (years)	'7	'	'

Goodwill_And_Other_Intangible_2

Goodwill And Other Intangible Assets (Change In Goodwill By Reportable Segment) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Goodwill [Line Items]	'
Balance at December 31, 2012	$265,055
Additions related to business combinations	344
Additions related to prior year business combinations	-687
Effect of foreign currency translation	-113
Balance at December 31, 2013	264,599
ECBU [Member]	'
Goodwill [Line Items]	'
Balance at December 31, 2012	148,322
Additions related to business combinations	0
Additions related to prior year business combinations	-494
Effect of foreign currency translation	0
Balance at December 31, 2013	147,828
GMBU [Member]	'
Goodwill [Line Items]	'
Balance at December 31, 2012	75,149
Additions related to business combinations	0
Additions related to prior year business combinations	-193
Effect of foreign currency translation	0
Balance at December 31, 2013	74,956
IBU [Member]	'
Goodwill [Line Items]	'
Balance at December 31, 2012	6,311
Additions related to business combinations	344
Additions related to prior year business combinations	0
Effect of foreign currency translation	-113
Balance at December 31, 2013	6,542
Target Analytics [Member]	'
Goodwill [Line Items]	'
Balance at December 31, 2012	33,177
Additions related to business combinations	0
Additions related to prior year business combinations	0
Effect of foreign currency translation	0
Balance at December 31, 2013	33,177
Other [Member]	'
Goodwill [Line Items]	'
Balance at December 31, 2012	2,096
Additions related to business combinations	0
Additions related to prior year business combinations	0
Effect of foreign currency translation	0
Balance at December 31, 2013	$2,096

Goodwill_And_Other_Intangible_3

Goodwill And Other Intangible Assets (Fair Values Of Intangible Assets Acquired In Various Business Combinations By Class) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Acquired Intangible Assets by Major Class [Line Items]	'	'
Intangible Assets, Net (Excluding Goodwill)	$143,441	$168,037
Finite-lived Gross Carrying Amount [Member]	'	'
Schedule of Acquired Intangible Assets by Major Class [Line Items]	'	'
Finite-Lived Intangible Assets, Gross	212,961	214,806
Finite-lived Gross Carrying Amount [Member] | Customer Relationships [Member]	'	'
Schedule of Acquired Intangible Assets by Major Class [Line Items]	'	'
Finite-Lived Intangible Assets, Gross	102,030	101,878
Finite-lived Gross Carrying Amount [Member] | Marketing Assets [Member]	'	'
Schedule of Acquired Intangible Assets by Major Class [Line Items]	'	'
Finite-Lived Intangible Assets, Gross	10,384	10,296
Finite-lived Gross Carrying Amount [Member] | Acquired software and technology [Member]	'	'
Schedule of Acquired Intangible Assets by Major Class [Line Items]	'	'
Finite-Lived Intangible Assets, Gross	94,144	94,378
Finite-lived Gross Carrying Amount [Member] | Non-compete Agreements [Member]	'	'
Schedule of Acquired Intangible Assets by Major Class [Line Items]	'	'
Finite-Lived Intangible Assets, Gross	2,128	3,979
Finite-lived Gross Carrying Amount [Member] | Database [Member]	'	'
Schedule of Acquired Intangible Assets by Major Class [Line Items]	'	'
Finite-Lived Intangible Assets, Gross	4,275	4,275
Accumulated Amortization [Member]	'	'
Schedule of Acquired Intangible Assets by Major Class [Line Items]	'	'
Finite-Lived Intangible Assets, Accumulated Amortization	70,713	48,158
Accumulated Amortization [Member] | Customer Relationships [Member]	'	'
Schedule of Acquired Intangible Assets by Major Class [Line Items]	'	'
Finite-Lived Intangible Assets, Accumulated Amortization	33,442	24,994
Accumulated Amortization [Member] | Marketing Assets [Member]	'	'
Schedule of Acquired Intangible Assets by Major Class [Line Items]	'	'
Finite-Lived Intangible Assets, Accumulated Amortization	4,529	2,852
Accumulated Amortization [Member] | Acquired software and technology [Member]	'	'
Schedule of Acquired Intangible Assets by Major Class [Line Items]	'	'
Finite-Lived Intangible Assets, Accumulated Amortization	27,671	14,787
Accumulated Amortization [Member] | Non-compete Agreements [Member]	'	'
Schedule of Acquired Intangible Assets by Major Class [Line Items]	'	'
Finite-Lived Intangible Assets, Accumulated Amortization	1,739	2,727
Accumulated Amortization [Member] | Database [Member]	'	'
Schedule of Acquired Intangible Assets by Major Class [Line Items]	'	'
Finite-Lived Intangible Assets, Accumulated Amortization	3,332	2,798
Indefinite-lived Gross Carrying Amount [Member] | Marketing Assets [Member]	'	'
Schedule of Acquired Intangible Assets by Major Class [Line Items]	'	'
Indefinite-Lived Intangible Assets (Excluding Goodwill)	$1,193	$1,389

Goodwill_And_Other_Intangible_4

Goodwill And Other Intangible Assets (Summary Of Amortization Expense) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Amortization Of Intangible Assets Acquired By Income Statement Location [Line Items]	'	'	'
Amortization expense	$24,598	$17,349	$7,578
Cost Of License Fees [Member]	'	'	'
Amortization Of Intangible Assets Acquired By Income Statement Location [Line Items]	'	'	'
Amortization expense	421	485	635
Cost Of Subscriptions [Member]	'	'	'
Amortization Of Intangible Assets Acquired By Income Statement Location [Line Items]	'	'	'
Amortization expense	18,578	11,969	3,341
Cost Of Services [Member]	'	'	'
Amortization Of Intangible Assets Acquired By Income Statement Location [Line Items]	'	'	'
Amortization expense	2,528	1,992	1,572
Cost Of Maintenance [Member]	'	'	'
Amortization Of Intangible Assets Acquired By Income Statement Location [Line Items]	'	'	'
Amortization expense	457	722	975
Cost Of Other Revenue [Member]	'	'	'
Amortization Of Intangible Assets Acquired By Income Statement Location [Line Items]	'	'	'
Amortization expense	75	75	75
Total Included In Cost Of Revenue [Member]	'	'	'
Amortization Of Intangible Assets Acquired By Income Statement Location [Line Items]	'	'	'
Amortization expense	22,059	15,243	6,598
Included In Operating Expenses [Member]	'	'	'
Amortization Of Intangible Assets Acquired By Income Statement Location [Line Items]	'	'	'
Amortization expense	$2,539	$2,106	$980

Goodwill_And_Other_Intangible_5

Goodwill And Other Intangible Assets (Estimated Future Amortization For Finite-Lived Intangible Assets) (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Goodwill and Intangible Assets Disclosure [Abstract]	'
2014	$22,573
2015	22,203
2016	21,799
2017	19,484
2018	18,123
Total	$104,182

Prepaid_Expenses_And_Other_Ass2

Prepaid Expenses And Other Assets (Components Of Prepaid Expenses And Other Assets) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]	'	'
Deferred sales commissions	$20,088	$18,142
Prepaid software maintenance	6,875	5,530
Taxes, prepaid and receivable	1,112	7,398
Deferred professional services costs	7,445	8,057
Software development costs	4,172	1,994
Other assets	9,674	9,312
Total prepaid expenses and other assets	49,366	50,433
Less: Long-term portion	19,251	9,844
Total prepaid expenses and other current assets	$30,115	$40,589

Accrued_Expenses_And_Other_Lia2

Accrued Expenses And Other Liabilities (Components Of Accrued Expenses And Other Liabilities) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accrued Expenses And Other Current Liabilities [Abstract]	'	'
Taxes payable	$5,430	$7,607
Accrued commissions and salaries	7,127	5,905
Accrued bonuses	9,258	11,966
Customer credit balances	3,281	4,577
Accrued software and maintenance	970	3,875
Unrecognized tax benefit	3,698	3,846
Other liabilities	17,334	13,501
Total accrued expenses and other liabilities	47,098	51,277
Less: Long-term portion	6,655	5,281
Total accrued expenses and other current liabilities	$40,443	$45,996

Deferred_Revenue_Details

Deferred Revenue (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Deferred Revenue Arrangement [Line Items]	'	'
Total deferred revenue	$190,574	$185,018
Less: Deferred revenue, net of current portion	9,099	11,119
Deferred revenue, current portion	181,475	173,899
Maintenance [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Total deferred revenue	85,219	81,741
Subscriptions [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Total deferred revenue	72,480	65,850
Services [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Total deferred revenue	32,153	36,904
License fees and other [Member]	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Total deferred revenue	$722	$523

Debt_Narrative_Details

Debt (Narrative) (Details) (USD $)	1 Months Ended	12 Months Ended
	Feb. 29, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Line of Credit Facility [Line Items]	'	'	'	'
Commitment fee on unused portion of revolving credit facility	'	0.25%	'	'
Payment of financing costs	$2,400,000	$0	$2,440,000	$767,000
Deferred financing costs, total	'	1,900,000	2,500,000	'
Minimum [Member]	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'
Commitment fee on unused portion of revolving credit facility	'	0.20%	'	'
Maximum [Member]	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'
Commitment fee on unused portion of revolving credit facility	'	0.35%	'	'
Credit Facility [Member]	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'
Credit facility, term	'	'5 years	'	'
Credit facility, maximum borrowing capacity	'	$325,000,000	'	'
Variable Rate Based On Federal Funds Rate Plus Margin [Member] | Maximum [Member]	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'
Line of credit facility variable interest rate	'	0.50%	'	'
Variable Rate One Month LIBOR Plus [Member]	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'
Line of credit facility variable interest rate	'	1.00%	'	'
Variable Rate Based On LIBOR [Member] | Minimum [Member]	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'
Line of credit facility variable interest rate	'	0.25%	'	'
Variable Rate Based On LIBOR [Member] | Maximum [Member]	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'
Line of credit facility variable interest rate	'	1.25%	'	'
Variable Rate Based On LIBOR Plus Margin [Member] | Minimum [Member]	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'
Line of credit facility variable interest rate	'	1.25%	'	'
Variable Rate Based On LIBOR Plus Margin [Member] | Maximum [Member]	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'
Line of credit facility variable interest rate	'	2.25%	'	'
Swingline Loans Bear Interest Rate [Member] | Minimum [Member]	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'
Line of credit facility variable interest rate	'	0.25%	'	'
Swingline Loans Bear Interest Rate [Member] | Maximum [Member]	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'
Line of credit facility variable interest rate	'	1.25%	'	'
Revolving Credit Loans Bear Interest Rate [Member] | Minimum [Member]	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'
Line of credit facility variable interest rate	'	1.25%	'	'
Revolving Credit Loans Bear Interest Rate [Member] | Maximum [Member]	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'
Line of credit facility variable interest rate	'	2.25%	'	'

Debt_Summary_of_Debt_Details

Debt (Summary of Debt) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Line of Credit Facility [Line Items]	'	'
Total debt	$152,908	$215,500
Less: Debt, current portion	17,158	10,000
Debt, net of current portion	135,750	205,500
Effective interest rate	2.14%	2.88%
Revolving Credit Loans [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Total debt	70,408	123,000
Effective interest rate	1.95%	2.68%
Term Loans [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Total debt	82,500	92,500
Effective interest rate	2.39%	3.14%
Short-term Debt [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Less: Debt, current portion	17,158	10,000
Effective interest rate	2.39%	3.14%
Long-term Debt [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Debt, net of current portion	$135,750	$205,500
Effective interest rate	2.11%	2.86%

Debt_Annual_Maturities_Related

Debt (Annual Maturities Related to Cedit Facility) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Debt Disclosure [Abstract]	'	'
2014	$17,158	'
2015	15,000	'
2016	15,000	'
2017	105,750	'
Total debt	$152,908	$215,500

Derivative_Instruments_Narrati

Derivative Instruments (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	31-May-12
			Interest Rate Swap [Member]
			Swap_Agreements
Derivative [Line Items]	'	'	'
Number of interest rate swap agreements	'	'	2
Notional value of the swap agreements	'	'	$150
Tax benefit recognized in accumulated other comprehensive loss	($0.30)	($0.50)	'

Derivative_Instruments_Fair_Va

Derivative Instruments (Fair Value of Derivative Instruments) (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Derivatives, Fair Value [Line Items]	'		'
Derivative Liability	$427	[1]	$1,296	[1]
Interest Rate Swap [Member] | Accrued expenses and other current liabilities [Member]	'		'
Derivatives, Fair Value [Line Items]	'		'
Derivative Liability, Current	46		0
Interest Rate Swap [Member] | Other Liabilities [Member]	'		'
Derivatives, Fair Value [Line Items]	'		'
Derivative Liability, Noncurrent	381		1,296
Fair Value, Inputs, Level 2 [Member]	'		'
Derivatives, Fair Value [Line Items]	'		'
Derivative Liability	$427	[1]	$1,296	[1]
[1]	The fair value of our interest rate swaps was based on model-driven valuations using LIBOR rates, which are observable at commonly quoted intervals. Accordingly, our interest rate swaps are classified within Level 2 of the fair value hierarchy.

Derivative_Instruments_Effects

Derivative Instruments (Effects of Derivative Instruments in Cash Flow Hedging Relationships) (Details) (Interest Rate Swap [Member], Cash Flow Hedging [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]	'	'
Loss recognized in accumulated other comprehensive loss	$427	$1,296
Interest Expense [Member]	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'
Loss reclassified from accumulated other comprehensive loss into income	$794	$466

Commitments_And_Contingencies_2

Commitments And Contingencies (Narrative) (Details) (USD $)

12 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Jul. 31, 2016

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

lease

Convio, Inc [Member]

Convio, Inc [Member]

Leasehold Improvements [Member]

Leasehold Improvements [Member]

Leasehold Improvements [Member]

Reduction In Rent Expense For Sublease Income [Member]

Reduction In Rent Expense For Sublease Income [Member]

Incentive Payments [Member]

Incentive Payments [Member]

Incentive Payments [Member]

Incurred Expense Under Contractual Arrangements [Member]

lease

sqft

Commitments and Contingencies [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Lease agreement term (in years)

'15 years

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Renewal Options, Leases

2

'

'

2

'

'

'

'

'

'

'

'

'

'

Term Of Lease Renewal Option

'5 years

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

Annual base rent of lease

$4

'

'

$2.20

'

'

'

'

'

'

'

'

'

'

Increase in square feet of leased space (square foot)

'

'

'

'

20,000

'

'

'

'

'

'

'

'

'

Percentage of minimum change In base rent

'

'

'

2.00%

'

'

'

'

'

'

'

'

'

'

Percentage of maximum change in base rent

5.50%

'

'

4.00%

'

'

'

'

'

'

'

'

'

'

Standby letter of credit for security deposit

'

'

'

2

'

'

'

'

'

'

'

'

'

'

Reimbursable leasehold improvements

9.5

'

'

'

'

'

'

'

'

'

'

'

'

'

Reduction in rent expense

'

'

'

'

'

0.6

0.3

0.3

0.3

0.4

2.4

2.2

2.3

'

Total rent expense

9

7.6

4.7

'

'

'

'

'

'

'

'

'

'

'

Contractual arrangements length, minimum (in years)

'1 year

'

'

'

'

'

'

'

'

'

'

'

'

'

Contractual arrangements length, maximum (in years)

'3 years

'

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate minimum purchase commitment for third-party relationships utilized with our products

11.8

'

'

'

'

'

'

'

'

'

'

'

'

'

Expense incurred related to purchase commitments with third-party service providers utilized with our products

'

'

'

'

'

'

'

'

'

'

'

'

'

$3.50

Commitments_And_Contingencies_3

Commitments And Contingencies (Future Minimum Lease Commitments Related To Lease Agreements, Net Of Related Sublease Commitments And Lease Incentives) (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]	'
2014	$10,027
2015	9,872
2016	9,570
2017	9,616
2018	9,819
Thereafter	41,466
Total minimum lease payments	$90,370

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Line Items]	'	'	'
Net excess tax benefits from equity-based compensation recorded in stockholder's equity	($25,000)	$81,000	$193,000
Unrecognizable income tax benefits from share-based compensation	3,800,000	600,000	'
Research and development tax credit	1,800,000	1,600,000	'
Unrecognized tax benefit that, if recognized, would favorably affect the effective tax rate	3,700,000	'	'
Total amount of accrued interest and penalties	600,000	700,000	'
Decreases in income tax penalties and interest accrued	'	300,000	'
Increases in income tax penalties and interest accrued	200,000	'	100,000
Decrease in unrecognized tax benefits is reasonably possible, amount of unrecorded decrease	1,300,000	'	'
Domestic Tax Authority [Member]	'	'	'
Income Taxes [Line Items]	'	'	'
Operating loss carryforwards	41,800,000	'	'
Tax credit carryforwards	6,300,000	'	'
Foreign Tax Authority [Member]	'	'	'
Income Taxes [Line Items]	'	'	'
Operating loss carryforwards	3,100,000	'	'
Tax credit carryforwards	500,000	'	'
State and Local Jurisdiction [Member]	'	'	'
Income Taxes [Line Items]	'	'	'
Operating loss carryforwards	52,600,000	'	'
Tax credit carryforwards	12,200,000	'	'
Tax credit carryforward, valuation allowance	$8,500,000	'	'

Income_Taxes_Components_Of_Inc

Income Taxes (Components Of Income Tax Expense) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
U.S. Federal	$78	($1,764)	$3,434
U.S. State and local	1,127	410	1,030
International	-221	511	40
Total current taxes	984	-843	4,504
U.S. Federal	14,394	8,943	11,943
U.S. State and local	-694	-796	1,536
International	173	-562	54
Total deferred taxes	13,873	7,585	13,533
Total income tax provision	$14,857	$6,742	$18,037

Recovered_Sheet1

Income Taxes (Components of Income Before Provision For Income Taxes) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'	'	'	'	'	'	'	'	'
U.S.	'	'	'	'	'	'	'	'	$48,137	$16,793	$50,946
International	'	'	'	'	'	'	'	'	-2,808	-3,468	311
Income before provision for income taxes	$13,287	$16,490	$12,532	$3,020	$7,342	$4,629	($3,446)	$4,800	$45,329	$13,325	$51,257

Income_Taxes_Reconciliation_Be

Income Taxes (Reconciliation Between Federal Statutory Rate And Effective Income Tax Rate Used To Calculate Income Tax Provision) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Loss Carryforwards [Line Items]	'	'	'
Federal statutory rate	35.00%	35.00%	35.00%
State income taxes, net of federal benefit	5.20%	8.30%	4.20%
Change in state income tax rate applied to deferred tax asset	-2.50%	-2.20%	0.60%
Fixed assets	-1.00%	-7.60%	0.00%
Unrecognized tax benefits	0.30%	2.90%	-0.30%
State credits, net of federal benefit	-2.90%	-1.70%	-2.20%
Change in valuation reserve	0.70%	4.10%	0.70%
Federal credits generated	-5.10%	0.00%	-2.70%
Foreign tax rate	0.60%	2.30%	0.00%
Aquisition costs	0.00%	10.80%	0.60%
Foreign tax credits	-0.50%	-3.00%	0.00%
Section 162(m) limitation	1.80%	0.10%	-0.40%
Other	1.20%	1.60%	-0.30%
Income tax provision effective rate	32.80%	50.60%	35.20%

Income_Taxes_Components_Of_Def

Income Taxes (Components Of Deferred Tax Assets And Liabilities) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified
Total deferred tax assets	$60,118	$87,802	'	'
Total deferred tax liabilities	-72,327	-85,843	'	'
Valuation allowance	-11,042	-10,651	-10,079	-9,614
Net deferred tax assets (liabilities)	-23,251	-8,692	'	'
Deferred Tax Assets [Member]	'	'	'	'
Federal, state and foreign net operating loss carryforwards	18,144	30,839	'	'
Federal, state and foreign tax credits	18,947	15,438	'	'
Intangible assets	5,849	13,706	'	'
Effect of expensing nonqualified stock options and restricted stock	3,818	7,634	'	'
Accrued bonuses	3,286	4,361	'	'
Deferred revenue	3,850	4,342	'	'
Allowance for doubtful accounts	1,938	3,161	'	'
Other	4,286	8,321	'	'
Deferred Tax Liabilities [Member]	'	'	'	'
Intangible assets	-55,018	-65,882	'	'
Fixed assets	-11,557	-12,643	'	'
Other	($5,752)	($7,318)	'	'

Income_Taxes_Changes_In_Deferr

Income Taxes (Changes In Deferred Tax Asset Valuation Allowance) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Change In Deferred Tax Asset Valuation Allowance	'	'	'
Balance at beginning of year	$10,651	$10,079	$9,614
Acquisition related change	635	286	0
Charges to expense	-244	286	465
Balance at end of year	$11,042	$10,651	$10,079

Income_Taxes_Changes_In_Unreco

Income Taxes (Changes In Unrecognized Tax Benefit) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Changes In Unrecognized Tax Benefits	'	'	'
Balance at beginning of year	$3,846	$1,777	$1,414
Increases from prior period positions	1,254	2,766	87
Decreases in prior year position	-813	-93	-9
Increases from current period positions	224	0	285
Lapse of statute of limitations	-813	-604	0
Balance at end of year	$3,698	$3,846	$1,777

StockBased_Compensation_Narrat

Stock-Based Compensation (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Total number authorized stock-based awards	5,723,093	'	'
Nonvested awards, compensation cost not yet recognized	$34,500,000	'	'
Period of recognition (in years) of compensation cost	'1 year 10 months 24 days	'	'
Total intrinsic value of options exercised	800,000	3,200,000	3,100,000
Expected to Vest, Number	388	'	'
Aggregate intrinsic value, unvested and expected to vest	8,000	'	'
Stock Options [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award Contractual Term	'10 years	'	'
Restricted Stock Awards [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award Contractual Term	'10 years	'	'
Total fair value of awards that vested	10,400,000	9,600,000	9,900,000
Expected to Vest, Number	965,270	'	'
Aggregate intrinsic value, unvested and expected to vest	36,300,000	'	'
Granted, Weighted Average Grant Date Fair Value	$35.31	$22.77	$27.98
Restricted Stock Units [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award Contractual Term	'10 years	'	'
Expected to Vest, Number	125,247	'	'
Aggregate intrinsic value, unvested and expected to vest	4,700,000	'	'
Granted, Weighted Average Grant Date Fair Value	$35.70	$21.41	$26.68
Stock Appreciation Rights (SARs) [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award Contractual Term	'7 years	'	'
Total intrinsic value of options exercised	12,900,000	2,400,000	2,200,000
Total fair value of awards that vested	3,400,000	3,900,000	3,600,000
Expected to Vest, Number	844,760	'	'
Aggregate intrinsic value, unvested and expected to vest	$11,350,000	'	'
Granted, Weighted Average Grant Date Fair Value	$6.59	$6.36	$8.10

StockBased_Compensation_Outsta

Stock-Based Compensation (Outstanding By Each Award Type) (Details)	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Outstanding, Number	24,158	60,775
Stock Options [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Outstanding, Number	24,158	60,775
Restricted Stock [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Outstanding, Number	1,015,934	1,202,121
Restricted Stock Units [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Outstanding, Number	130,512	389,913
Stock Appreciation Rights (SARs) [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Outstanding, Number	1,292,996	2,786,828

StockBased_Compensation_Summar

Stock-Based Compensation (Summary Of Stock-Based Compensation Expense) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Allocated share-based compensation expense	$16,910	$19,240	$14,884
Cost Of Subscriptions [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Allocated share-based compensation expense	1,032	860	571
Cost Of Services [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Allocated share-based compensation expense	2,464	2,786	1,966
Cost Of Maintenance [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Allocated share-based compensation expense	545	538	741
Total Included In Cost Of Revenue [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Allocated share-based compensation expense	4,041	4,184	3,278
Sales And Marketing [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Allocated share-based compensation expense	2,351	2,527	1,325
Research And Development [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Allocated share-based compensation expense	3,731	3,556	3,039
General And Administrative [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Allocated share-based compensation expense	6,787	8,973	7,242
Total Included In Operating Expenses [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Allocated share-based compensation expense	$12,869	$15,056	$11,606
Stock Options [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award Contractual Term	'10 years	'	'

StockBased_Compensation_Schedu

Stock-Based Compensation (Schedule of Options Outstanding) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Outstanding, Number	24,158	60,775
Weighted Average Exercise Price, Outstanding	11.49	11.09
2004 Stock Plan [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Date of Adoption	'MarchB 23,B 2004	'
Outstanding, Number	11,213	'
2004 Stock Plan [Member] | Minimum [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Weighted Average Exercise Price, Outstanding	8.6	'
2004 Stock Plan [Member] | Maximum [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Weighted Average Exercise Price, Outstanding	13.05	'
Kintera 2003 Plan [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Date of Adoption	'July 8, 2008	'
Outstanding, Number	3,977	'
Kintera 2003 Plan [Member] | Minimum [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Weighted Average Exercise Price, Outstanding	10.59	'
Kintera 2003 Plan [Member] | Maximum [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Weighted Average Exercise Price, Outstanding	19.26	'
Convio 1999 Plan [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Date of Adoption	'May 5, 2012	'
Outstanding, Number	6,538	'
Convio 1999 Plan [Member] | Minimum [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Weighted Average Exercise Price, Outstanding	9.1	'
Convio 1999 Plan [Member] | Maximum [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Weighted Average Exercise Price, Outstanding	15.54	'
Convio 2009 Plan [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Date of Adoption	'May 5, 2012	'
Outstanding, Number	2,430	'
Convio 2009 Plan [Member] | Minimum [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Weighted Average Exercise Price, Outstanding	15.62	'
Convio 2009 Plan [Member] | Maximum [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Weighted Average Exercise Price, Outstanding	18.2	'
Stock Options [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Share Based Compensation Arrangement By Share Based Payment Award Contractual Term	'10 years	'
Outstanding, Number	24,158	60,775

StockBased_Compensation_Schedu1

Stock-Based Compensation (Schedule Of Outstanding Options And Changes During The Year (Details) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Stock-Based Compensation [Abstract]	'	'
Outstanding, Number	24,158	60,775
Exercises in Period, Number	-35,831	'
Forfeitures in Period, Number	-513	'
Expirations in Period, Number	-273	'
Expected to Vest, Number	388	'
Options, Vested and Exercisable, Number	23,738	'
Weighted Average Exercise Price, Forfeitures in Period	$14.72	'
Weighted Average Exercise Price, Options Unvested and Expected to Vest	$17.75	'
Weighted Average Exercise Price, Expired	$13.25	'
Weighted Average Exercise Price, Outstanding	$11.49	$11.09
Weighted average pxercise price, awards exercised in period	$10.76	'
Weighted Average Exercise Price of Exercisable Options	$11.38	'
Aggregate Intrinsic Value, Options Outstanding	$631	'
Aggregate intrinsic value, unvested and expected to vest	8	'
Aggregate Intrinsic Value, Options Vested and Exercisable	$624	'
Weighted Average Remaining Contractual Term, Options, Vested and Exercisable	'3 years 1 month 6 days	'
Weighted Average Remaining Contractual Term, Unvested and Expected to Vest	'6 years 3 months 18 days	'
Weighted Average Remaining Contractual Term, Options Outstanding	'3 years 1 month 6 days	'

StockBased_Compensation_Summar1

Stock-Based Compensation (Summary of Unvested Restricted Stock Awards and Restricted Stock Units) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restricted Stock [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Unvested Awards, Number	1,015,934	1,202,121	'
Unvested, Weighted Average Grant Date Fair Value	$29.30	$24.58	'
Granted	458,462	'	'
Granted, Weighted Average Grant Date Fair Value	$35.31	$22.77	$27.98
Forfeited	-227,749	'	'
Forfeitures, Weighted Average Grant Date Fair Value	$24.55	'	'
Vested	-416,900	'	'
Vested, Weighted Average Grant Date Fair Value	$24.86	'	'
Restricted Stock Units [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Unvested Awards, Number	130,512	389,913	'
Unvested, Weighted Average Grant Date Fair Value	$28.84	$27.55	'
Granted	25,427	'	'
Granted, Weighted Average Grant Date Fair Value	$35.70	$21.41	$26.68
Forfeited	-64,863	'	'
Forfeitures, Weighted Average Grant Date Fair Value	$27.69	'	'
Expired	-30,049	'	'
Expired, Weighted Average Grant Date Fair Value	$24.70	'	'
Vested	-189,916	'	'
Vested, Weighted Average Grant Date Fair Value	$28.13	'	'

StockBased_Compensation_Summar2

Stock-Based Compensation (Summary of Stock Appreciation Rights Awards) (Details) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Outstanding, Number	24,158	60,775
Weighted Average Exercise Price, Outstanding	$11.49	$11.09
Exercises, Number	-35,831	'
Weighted average pxercise price, awards exercised in period	$10.76	'
Forfeitures, Number	-513	'
Weighted Average Exercise Price, Forfeitures in Period	$14.72	'
Expirations, Number	-273	'
Weighted Average Exercise Price, Expired	$13.25	'
Weighted Average Exercise Price, Exercisable	$11.38	'
Weighted Average Remaining Contractual Term, Vested and Exercisable Awards	'3 years 1 month 6 days	'
Weighted Average Remaining Contractual Term Of Share-Based Awards Outstanding	'3 years 1 month 6 days	'
Weighted Average Remaining Contractual Term, Unvested and Expected to Vest	'6 years 3 months 18 days	'
Aggregate Intrinsic Value, Outstanding	$631	'
Expected to Vest, Number	388	'
Weighted Average Exercise Price, Options Unvested and Expected to Vest	$17.75	'
Aggregate Intrinsic Value, Vested and Exercisable	624	'
Aggregate intrinsic value, unvested and expected to vest	8	'
Stock Appreciation Rights (SARs) [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Outstanding, Number	1,292,996	2,786,828
Weighted Average Exercise Price, Outstanding	$24.21	$23.87
Granted, Number	60,367	'
Exercises, Number	-1,270,064	'
Weighted average pxercise price, awards exercised in period	$23.53	'
Forfeitures, Number	-282,552	'
Weighted Average Exercise Price, Forfeitures in Period	$24.79	'
Expirations, Number	-1,583	'
Weighted Average Exercise Price, Expired	$26.17	'
Weighted Average Exercise Price, Exercisable	$24.15	'
Weighted Average Exercise Price, Granted	$28.47	'
Weighted Average Remaining Contractual Term, Vested and Exercisable Awards	'3 years 9 months 18 days	'
Weighted Average Remaining Contractual Term Of Share-Based Awards Outstanding	'5 years	'
Weighted Average Remaining Contractual Term, Unvested and Expected to Vest	'5 years 6 months	'
Aggregate Intrinsic Value, Outstanding	17,375	'
Expected to Vest, Number	844,760	'
Weighted Average Exercise Price, Options Unvested and Expected to Vest	$24.21	'
Aggregate Intrinsic Value, Vested and Exercisable	5,653	'
Aggregate intrinsic value, unvested and expected to vest	$11,350	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	418,809	'

StockBased_Compensation_Signif

Stock-Based Compensation (Significant Assumptions Used In Option Pricing Model) (Details) (Stock Appreciation Rights (SARs) [Member])	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Option Fair Value Assumptions, Expected Dividend Rate	1.70%	1.70%	'
Option Fair Value Assumptions, Expected Term	'4 years	'4 years	'4 years
Minimum [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Option Fair Value Assumptions, Expected Volatility Rate	32.00%	35.00%	41.00%
Option Fair Value Assumptions, Expected Dividend Rate	'	'	1.70%
Option Fair Value Assumptions, Risk Free Interest Rate	0.60%	0.50%	0.60%
Maximum [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Option Fair Value Assumptions, Expected Volatility Rate	35.00%	41.00%	42.00%
Option Fair Value Assumptions, Expected Dividend Rate	'	'	1.80%
Option Fair Value Assumptions, Risk Free Interest Rate	0.80%	0.60%	1.90%

Stockholders_Equity_Narrative_

Stockholders' Equity (Narrative) (Details) (USD $)	3 Months Ended				12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Feb. 28, 2013
								Dividend Declared [Member]
Equity [Abstract]	'	'	'	'	'	'	'	'
Dividend per Share	$0.12	$0.12	$0.12	$0.12	$0.48	$0.48	$0.48	'
Stock Repurchase Program, Authorized Amount	'	'	'	'	$50	'	'	'
Stock Repurchase Program, Remaining Authorized Repurchase Amount	'	'	'	'	$50	'	'	'
Dividends Payable [Line Items]	'	'	'	'	'	'	'	'
Dividends Payable, Amount Per Share	'	'	'	'	'	'	'	$0.12

Stockholders_Equity_Stockholde

Stockholders' Equity Stockholders' Equity (Changes in accumulated other comprehensive loss by component) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Income tax benefit included in reclassification from accumulated other comprehensive loss	$300,000		'	'
Accumulated Other Comprehensive Income [Roll Forward]	'		'	'
Balance at December 31, 2012	-1,973,000		'	'
Other comprehensive (loss) income before reclassifications	-206,000		'	'
Amounts reclassified from accumulated other comprehensive loss to interest expense	794,000	[1]	'	'
Net current-period other comprehensive income	588,000		-825,000	-336,000
Balance at December 31, 2013	-1,385,000		-1,973,000	'
Cash Flow Hedging [Member]	'		'	'
Accumulated Other Comprehensive Income [Roll Forward]	'		'	'
Balance at December 31, 2012	-791,000		'	'
Other comprehensive (loss) income before reclassifications	-259,000		'	'
Amounts reclassified from accumulated other comprehensive loss to interest expense	794,000	[1]	'	'
Net current-period other comprehensive income	535,000		'	'
Balance at December 31, 2013	-256,000		'	'
Accumulated Translation Adjustment [Member]	'		'	'
Accumulated Other Comprehensive Income [Roll Forward]	'		'	'
Balance at December 31, 2012	-1,182,000		'	'
Other comprehensive (loss) income before reclassifications	53,000		'	'
Amounts reclassified from accumulated other comprehensive loss to interest expense	0		'	'
Net current-period other comprehensive income	53,000		'	'
Balance at December 31, 2013	($1,129,000)		'	'
[1]	Included in the amount reclassified from accumulated other comprehensive loss during 2013 was an income tax benefit of $0.3 million.

Employee_ProfitSharing_Plan_Na

Employee Profit-Sharing Plan (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Employer matching percentage of qualified emlployees contribution	50.00%	'	'
Total matching contribution by the employer	$5.10	$4.60	$4
Minimum [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Salary contribution percentage by employees	1.00%	'	'
Maximum [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Salary contribution percentage by employees	30.00%	'	'
Qualified employees salary matching percentage	6.00%	'	'

Segment_Information_Reportable

Segment Information (Reportable Segment Financial Results) (Details) (USD $)

3 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total revenue

$134,872

$127,854

$125,468

$115,623

$120,051

$122,472

$110,190

$94,706

$503,817

$447,419

$370,868

Total segment operating income

'

'

'

'

'

'

'

'

261,156

220,773

179,720

Corporate unallocated costs

'

'

'

'

'

'

'

'

168,106

[1]

164,749

[1]

106,330

[1]

Stock based compensation costs

'

'

'

'

'

'

'

'

16,910

19,240

14,884

Amortization expense

'

'

'

'

'

'

'

'

24,598

17,349

7,578

Interest expense (income), net

'

'

'

'

'

'

'

'

5,751

5,718

17

Other expense (income), net

'

'

'

'

'

'

'

'

462

392

-346

Income before provision for income taxes

13,287

16,490

12,532

3,020

7,342

4,629

-3,446

4,800

45,329

13,325

51,257

ECBU [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total revenue

'

'

'

'

'

'

'

'

195,570

165,161

127,945

Total segment operating income

'

'

'

'

'

'

'

'

103,443

[2]

74,419

[2]

53,141

[2]

GMBU [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total revenue

'

'

'

'

'

'

'

'

225,352

203,178

171,999

Total segment operating income

'

'

'

'

'

'

'

'

131,707

[2]

121,985

[2]

101,572

[2]

IBU [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total revenue

'

'

'

'

'

'

'

'

41,488

40,068

33,841

Total segment operating income

'

'

'

'

'

'

'

'

8,082

[2]

5,265

[2]

6,922

[2]

Target Analytics [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total revenue

'

'

'

'

'

'

'

'

39,845

37,453

35,769

Total segment operating income

'

'

'

'

'

'

'

'

16,582

[2]

17,619

[2]

16,882

[2]

Other [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total revenue

'

'

'

'

'

'

'

'

1,562

[3]

1,559

[3]

1,314

[3]

Total segment operating income

'

'

'

'

'

'

'

'

$1,342

[2],[3]

$1,485

[2],[3]

$1,203

[2],[3]

[1]

Corporate unallocated costs include research and development, depreciation expense, and certain corporate sales, marketing, general and administrative expenses.

[2]

Segment operating income includes direct, controllable costs related to the sale of products and services by the reportable segment, except for IBU, which includes operating costs from our foreign locations such as sales, marketing, general, administrative, depreciation and facilities costs.

[3]

Other includes revenue and the related costs from the sale of products and services not directly attributable to an operating segment.

Segment_Information_Segment_In

Segment Information Segment Information (Revenue by Product and Service Group by Reportable Segment) (Details) (USD $)

3 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

License fees

'

'

'

'

'

'

'

'

$16,715

$20,551

$19,475

Subscriptions

'

'

'

'

'

'

'

'

212,656

162,102

103,544

Services

'

'

'

'

'

'

'

'

126,548

119,626

108,781

Maintenance

'

'

'

'

'

'

'

'

138,745

136,101

130,604

Other revenue

'

'

'

'

'

'

'

'

9,153

9,039

8,464

Total revenue

134,872

127,854

125,468

115,623

120,051

122,472

110,190

94,706

503,817

447,419

370,868

ECBU [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

License fees

'

'

'

'

'

'

'

'

7,374

7,888

6,741

Subscriptions

'

'

'

'

'

'

'

'

97,392

73,246

45,572

Services

'

'

'

'

'

'

'

'

48,471

44,882

39,662

Maintenance

'

'

'

'

'

'

'

'

39,503

35,905

32,759

Other revenue

'

'

'

'

'

'

'

'

2,830

3,240

3,211

Total revenue

'

'

'

'

'

'

'

'

195,570

165,161

127,945

GMBU [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

License fees

'

'

'

'

'

'

'

'

6,718

9,068

8,742

Subscriptions

'

'

'

'

'

'

'

'

88,766

65,482

41,017

Services

'

'

'

'

'

'

'

'

41,228

39,036

34,820

Maintenance

'

'

'

'

'

'

'

'

84,763

86,026

83,963

Other revenue

'

'

'

'

'

'

'

'

3,877

3,566

3,457

Total revenue

'

'

'

'

'

'

'

'

225,352

203,178

171,999

IBU [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

License fees

'

'

'

'

'

'

'

'

2,510

3,476

3,830

Subscriptions

'

'

'

'

'

'

'

'

12,743

10,038

4,575

Services

'

'

'

'

'

'

'

'

11,337

12,230

11,472

Maintenance

'

'

'

'

'

'

'

'

14,056

13,673

13,484

Other revenue

'

'

'

'

'

'

'

'

842

651

480

Total revenue

'

'

'

'

'

'

'

'

41,488

40,068

33,841

Target Analytics [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

License fees

'

'

'

'

'

'

'

'

113

119

162

Subscriptions

'

'

'

'

'

'

'

'

13,755

13,320

12,292

Services

'

'

'

'

'

'

'

'

25,495

23,452

22,810

Maintenance

'

'

'

'

'

'

'

'

423

497

396

Other revenue

'

'

'

'

'

'

'

'

59

65

109

Total revenue

'

'

'

'

'

'

'

'

39,845

37,453

35,769

Other [Member]

'

'

'

'

'

'

'

'

'

'

'

Revenue from External Customer [Line Items]

'

'

'

'

'

'

'

'

'

'

'

License fees

'

'

'

'

'

'

'

'

0

0

0

Subscriptions

'

'

'

'

'

'

'

'

0

16

88

Services

'

'

'

'

'

'

'

'

17

26

17

Maintenance

'

'

'

'

'

'

'

'

0

0

2

Other revenue

'

'

'

'

'

'

'

'

1,545

1,517

1,207

Total revenue

'

'

'

'

'

'

'

'

$1,562

[1]

$1,559

[1]

$1,314

[1]

[1]

Other includes revenue and the related costs from the sale of products and services not directly attributable to an operating segment.

Segment_Information_Revenue_An

Segment Information (Revenue And Long-Lived Assets By Geographic Region) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	$134,872	$127,854	$125,468	$115,623	$120,051	$122,472	$110,190	$94,706	$503,817	$447,419	$370,868
Property and equipment	49,550	'	'	'	49,063	'	'	'	49,550	49,063	'
United States [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	439,887	386,376	317,305
Property and equipment	47,367	'	'	'	47,826	'	'	'	47,367	47,826	'
Total Foreign [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	63,930	61,043	53,563
Property and equipment	2,183	'	'	'	1,237	'	'	'	2,183	1,237	'
Canada [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	23,344	22,770	21,725
Property and equipment	72	'	'	'	188	'	'	'	72	188	'
Europe [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	24,107	23,022	21,162
Property and equipment	1,694	'	'	'	810	'	'	'	1,694	810	'
Asia Pacific [Member]	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	16,479	15,251	10,676
Property and equipment	$417	'	'	'	$239	'	'	'	$417	$239	'

Quarterly_Results_Quarterly_Re1

Quarterly Results Quarterly Results (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Results [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Total revenue	$134,872,000	$127,854,000	$125,468,000	$115,623,000	$120,051,000	$122,472,000	$110,190,000	$94,706,000	$503,817,000	$447,419,000	$370,868,000
Gross profit	68,514,000	71,740,000	68,855,000	62,045,000	64,299,000	67,344,000	59,685,000	53,631,000	271,154,000	244,959,000	213,674,000
Income from operations	14,622,000	18,008,000	14,318,000	4,594,000	9,875,000	6,185,000	-1,877,000	5,252,000	51,542,000	19,435,000	50,928,000
Income before provision for income taxes	13,287,000	16,490,000	12,532,000	3,020,000	7,342,000	4,629,000	-3,446,000	4,800,000	45,329,000	13,325,000	51,257,000
Net income	11,790,000	9,393,000	6,623,000	2,666,000	3,270,000	2,825,000	-2,271,000	2,759,000	30,472,000	6,583,000	33,220,000
Earnings per share, Basic	$0.26	$0.21	$0.15	$0.06	$0.07	$0.06	($0.05)	$0.06	$0.68	$0.15	$0.76
Earnings per share, Diluted	$0.26	$0.21	$0.15	$0.06	$0.07	$0.06	($0.05)	$0.06	$0.67	$0.15	$0.75
Subscription revenue attributable to presentation change from net to gross	$8,500,000	'	'	'	'	'	'	'	'	'	'

Restructuring_Narrative_Detail

Restructuring (Narrative) (Details) (Plan to Realign Company's Workforce [Member])	1 Months Ended
	Jan. 31, 2013
	position
Plan to Realign Company's Workforce [Member]	'
Restructuring Cost and Reserve [Line Items]	'
Reduction in workforce, number of positions	135

Restructuring_Restructuring_Su

Restructuring Restructuring (Summary of Restructuring Costs for San Diego Plan) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]	'	'	'
Costs incurred during the period	$3,494	$175	$0
San Diego Office Transition Plan [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Total restructuring costs expected to be incurred	482	'	'
Costs incurred during the period	307	'	'
Cumulative costs incurred as of December 31, 2013	482	'	'
San Diego Office Transition Plan [Member] | Other [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Total restructuring costs expected to be incurred	482	'	'
Costs incurred during the period	307	'	'
Cumulative costs incurred as of December 31, 2013	482	'	'
San Diego Office Transition Plan [Member] | Employee Severance and Retention [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Total restructuring costs expected to be incurred	295	'	'
Costs incurred during the period	120	'	'
Cumulative costs incurred as of December 31, 2013	295	'	'
San Diego Office Transition Plan [Member] | Employee Relocation [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Total restructuring costs expected to be incurred	187	'	'
Costs incurred during the period	187	'	'
Cumulative costs incurred as of December 31, 2013	$187	'	'

Restructuring_Restructuring_Sc

Restructuring Restructuring (Schedule of Changes in Restructuring Liability for San Diego Plan) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]	'	'	'
Increases for incurred costs	$3,494	$175	$0
San Diego Office Transition Plan [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Accrued at December 31, 2012	175	'	'
Increases for incurred costs	307	'	'
Costs paid	-482	'	'
Accrued at December 31, 2013	0	'	'
San Diego Office Transition Plan [Member] | Employee Severance and Retention [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Accrued at December 31, 2012	175	'	'
Increases for incurred costs	120	'	'
Costs paid	-295	'	'
Accrued at December 31, 2013	0	'	'
San Diego Office Transition Plan [Member] | Employee Relocation [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Accrued at December 31, 2012	0	'	'
Increases for incurred costs	187	'	'
Costs paid	-187	'	'
Accrued at December 31, 2013	$0	'	'

Restructuring_Restructuring_Su1

Restructuring Restructuring (Summary of Restructuring Costs for Realignment of Workforce Plan) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]	'	'	'
Increases for incurred costs	$3,494	$175	$0
Plan to Realign Company's Workforce [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Total restructuring costs expected to be incurred	3,187	'	'
Increases for incurred costs	3,187	'	'
Cumulative costs incurred as of December 31, 2013	3,187	'	'
Plan to Realign Company's Workforce [Member] | ECBU [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Total restructuring costs expected to be incurred	828	'	'
Increases for incurred costs	828	'	'
Cumulative costs incurred as of December 31, 2013	828	'	'
Plan to Realign Company's Workforce [Member] | GMBU [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Total restructuring costs expected to be incurred	290	'	'
Increases for incurred costs	290	'	'
Cumulative costs incurred as of December 31, 2013	290	'	'
Plan to Realign Company's Workforce [Member] | Target Analytics [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Total restructuring costs expected to be incurred	136	'	'
Increases for incurred costs	136	'	'
Cumulative costs incurred as of December 31, 2013	136	'	'
Plan to Realign Company's Workforce [Member] | Other [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Total restructuring costs expected to be incurred	1,933	'	'
Increases for incurred costs	1,933	'	'
Cumulative costs incurred as of December 31, 2013	1,933	'	'
Plan to Realign Company's Workforce [Member] | Employee Severance [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Total restructuring costs expected to be incurred	3,187	'	'
Increases for incurred costs	3,187	'	'
Cumulative costs incurred as of December 31, 2013	$3,187	'	'

Restructuring_Restructuring_Sc1

Restructuring Restructuring (Schedule of Changes in Restructuring Liability for Realignment of Workforce Plan) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restructuring Reserve [Roll Forward]	'	'	'
Increases for incurred costs	$3,494	$175	$0
Plan to Realign Company's Workforce [Member]	'	'	'
Restructuring Reserve [Roll Forward]	'	'	'
Increases for incurred costs	3,187	'	'
Plan to Realign Company's Workforce [Member] | Employee Severance [Member]	'	'	'
Restructuring Reserve [Roll Forward]	'	'	'
Accrued at December 31, 2012	0	'	'
Increases for incurred costs	3,187	'	'
Costs paid	-3,187	'	'
Accrued at December 31, 2013	$0	'	'