Supplemental Cash Flow Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Cash Flow, Supplemental [Line Items]
Interest paid	$ 7,390us-gaap_InterestPaid	$ 7,422us-gaap_InterestPaid	$ 11,100us-gaap_InterestPaid
Income tax paid, net	7,843us-gaap_IncomeTaxesPaidNet	3,544us-gaap_IncomeTaxesPaidNet	16,654us-gaap_IncomeTaxesPaidNet
Non-cash investing and financing activities:
Net assets of entities contributed to Alma Career Oy	4,200us-gaap_TransferToInvestments
Excess income tax benefit from equity compensation plans	$ 199	$ 5,907

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- Definition

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

+ References

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- Definition

The amount of cash paid for interest during the period.

+ References

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-Publisher FASB

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- Definition

The aggregate cash inflow comprised of the amount received from (a) employees to acquire the entity's shares under incentive awards, including stock option exercises and restricted stock arrangements, and (b) the excess tax benefit arising from such transactions.

+ References

No definition available.

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- Definition

Value of investments transferred to the entity's investments in noncash transactions.

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