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Acquisitions - Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands | Jun. 30, 2017 | Dec. 31, 2016 | Jun. 30, 2016
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Funds held for clients | $ 148,704 | $ 213,457 |
Goodwill | 526,984 | $ 487,484 |
CMF Associates, LLC (“CMF”), Slaton Insurance (“Slaton”) and Pacific Coastal Pension and Insurance Services, Inc. (Pacific Coastal”) [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Cash | 843 |  |
Accounts receivable, net | 4,338 |  |
Property and equipment, net | 24 |  |
Other assets | 151 |  |
Identifiable intangible assets | 3,115 |  |
Current liabilities | (4,716) |  |
Total identifiable net assets | 3,755 |  |
Goodwill | 39,460 |  |
Aggregate purchase price | $ 43,215 |  |
Flex-Pay Business Services, Inc., (“Flex-Pay”), The Savitz Organization (“Savitz”) and Millimaki Eggert, L.L.P., (“Millimaki”) [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Cash |  |  | $ 6
Accounts receivable, net |  |  | 5,313
Funds held for clients |  |  | 37,230
Property and equipment, net |  |  | 383
Other assets |  |  | 172
Identifiable intangible assets |  |  | 17,755
Current liabilities |  |  | (378)
Client fund obligations |  |  | (37,230)
Total identifiable net assets |  |  | 23,251
Goodwill |  |  | 26,471
Aggregate purchase price |  |  | $ 49,722

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition The amount of financial liabilities assumed (as defined) which have been recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=84160947&loc=d3e2207-128464 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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