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Subsequent Events (Details) |  | 3 Months Ended |
--- | --- | --- | ---
Apr. 21, 2017 USD ($) | Mar. 31, 2017 USD ($) | Mar. 31, 2016 USD ($) | Nov. 15, 2016 USD ($)
Subsequent Event [Line Items] |  |  |  |
Payments to acquire business, net of cash acquired |  | $ 19,256,000 | $ 8,102,000 |
RightAnswers, Inc. [Member] | Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Payments to acquire business, net of cash acquired | $ 17,200,000 |  |  |
Cash holdback payable | $ 2,500,000 |  |  |
Cash holdback payable, payment period (in years) | 1 year |  |  |
Credit Agreement [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Maximum allowed business consideration payable |  | 75,000,000 |  |
Credit Agreement [Member] | Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Maximum allowed business consideration payable | $ 150,000,000 |  |  |
Credit Agreement [Member] | Term Loan [Member] | Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Debt Instrument, Face Amount | 15,000,000 |  |  |
Credit Agreement [Member] | Line of Credit [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Maximum borrowing capacity |  | 90,000,000 |  |
U.S. [Member] | Revolving Credit Facility [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Outstanding borrowings |  | 0 |  |
U.S. [Member] | Credit Agreement [Member] | Revolving Credit Facility [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Maximum borrowing capacity |  |  |  | $ 9,000,000.0
U.S. [Member] | Credit Agreement [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Maximum borrowing capacity | $ 10,000,000 |  |  |
Multiplier used to calculate borrowing capacity (as a percent) | 1.0875 |  |  |
U.S. [Member] | Credit Agreement [Member] | Line of Credit [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Maximum borrowing capacity |  | 500,000.0 |  |
Canadian [Member] | Revolving Credit Facility [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Outstanding borrowings |  | 0 |  |
Canadian [Member] | Credit Agreement [Member] | Revolving Credit Facility [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Maximum borrowing capacity |  |  |  | $ 1,000,000.0
Canadian [Member] | Credit Agreement [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Maximum borrowing capacity | $ 10,000,000 |  |  |
Multiplier used to calculate borrowing capacity (as a percent) | 1.0875 |  |  |
Canadian [Member] | Credit Agreement [Member] | Line of Credit [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Maximum borrowing capacity |  | $ 250,000.00 |  |

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- Definition Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
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