Purchase Consideration related to Acquisition (Detail) (KSCP, USD $) In Thousands, unless otherwise specified	1 Months Ended	6 Months Ended
Apr. 30, 2013	Jun. 30, 2013
KSCP
Schedule of Business Acquisitions, Purchase Price [Line Items]
Cash		$ 10,000
Present value of remaining purchase consideration		13,836
Previously held equity interest		15,949
Gain on remeasurement of previously held equity interest in KSCP		154
Total purchase consideration	$ 25,000	$ 39,939

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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.

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages.

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In a business combination achieved in stages, this element represents the amount of net gain (loss) recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

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

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-Glossary Investing Activities

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