Business Combinations - Spend Radar (Schedule of Purchase Price Consideration) (Detail) (Spend Radar, USD $) In Thousands, unless otherwise specified	1 Months Ended
Oct. 31, 2012
Spend Radar
Business Acquisition [Line Items]
Cash	$ 8,000
Fair value of common stock	2,087
Total purchase consideration	10,087
Cash acquired	259
Net purchase consideration	$ 9,828

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

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-Publisher FASB

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-SubTopic 30

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-Paragraph 7

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

+ References

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- Definition

The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

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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

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