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Selected Segment Financial Data, Revenues and Operating Income (Loss) (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Segment Reporting Information [Line Items] |  |
Revenues | $ 231,462 | $ 226,066
Depreciation and amortization expense | 25,638 | 26,512
Stock-based compensation expense | 6,297 | 9,711
Operating income (loss) | 3,623 | 136,712
Operating Segments [Member] | ACI On Premise [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | 131,908 | 112,040
Depreciation and amortization expense | 3,261 | 3,915
Stock-based compensation expense | 1,216 | 1,866
Operating income (loss) | 63,918 | 35,581
Operating Segments [Member] | ACI On Demand [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | 99,554 | 98,610
Depreciation and amortization expense | 8,388 | 7,422
Stock-based compensation expense | 1,214 | 1,861
Operating income (loss) | (16,609) | (8,822)
Corporate and Other [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | 0 | 15,416
Depreciation and amortization expense | 13,989 | 15,175
Stock-based compensation expense | 3,867 | 5,984
Operating income (loss) | $ (43,686) | $ 109,953

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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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