Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Assets:
Total assets	$ 59,379	$ 14,958
Liabilities:
Long-term debt	98,000	91,000
Total liabilities	103,063	91,974
Money Market Funds and Open-End Mutual Funds [Member]
Assets:
Money market funds and open-end mutual funds included in "Cash and cash equivalents"	50,627	7,598
Money market funds and open-end mutual funds in "Deferred charges and other assets"	11	11
Foreign Currency Forward and Option Contracts Included in Other Current Assets [Member]
Assets:
Foreign currency forward and option contracts	2,240	1,994
Foreign Currency Forward and Option Contracts Included in Deferred Charges and Other Assets [Member]
Assets:
Foreign currency forward and option contracts		14
Equity Investments Held in a Rabbi Trust for the Deferred Compensation Plan [Member]
Assets:
Debt investments held in a rabbi trust for the Deferred Compensation Plan	5,251	3,212
Debt Investments Held in a Rabbi Trust for the Deferred Compensation Plan [Member]
Assets:
Debt investments held in a rabbi trust for the Deferred Compensation Plan	1,170	2,049
Guaranteed Investment Certificates [Member]
Assets:
Debt investments held in a rabbi trust for the Deferred Compensation Plan	80	80
Foreign Currency Forward and Option Contracts Included in Other Accrued Expenses and Current Liabilities [Member]
Liabilities:
Foreign currency forward and option contracts	5,063	974
Fair Value, Inputs, Level 1[Member]
Assets:
Total assets	57,059	12,870
Fair Value, Inputs, Level 1[Member] | Money Market Funds and Open-End Mutual Funds [Member]
Assets:
Money market funds and open-end mutual funds included in "Cash and cash equivalents"	50,627	7,598
Money market funds and open-end mutual funds in "Deferred charges and other assets"	11	11
Fair Value, Inputs, Level 1[Member] | Equity Investments Held in a Rabbi Trust for the Deferred Compensation Plan [Member]
Assets:
Debt investments held in a rabbi trust for the Deferred Compensation Plan	5,251	3,212
Fair Value, Inputs, Level 1[Member] | Debt Investments Held in a Rabbi Trust for the Deferred Compensation Plan [Member]
Assets:
Debt investments held in a rabbi trust for the Deferred Compensation Plan	1,170	2,049
Fair Value, Inputs, Level 2 [Member]
Assets:
Total assets	2,320	2,088
Liabilities:
Long-term debt	98,000	91,000
Total liabilities	103,063	91,974
Fair Value, Inputs, Level 2 [Member] | Foreign Currency Forward and Option Contracts Included in Other Current Assets [Member]
Assets:
Foreign currency forward and option contracts	2,240	1,994
Fair Value, Inputs, Level 2 [Member] | Foreign Currency Forward and Option Contracts Included in Deferred Charges and Other Assets [Member]
Assets:
Foreign currency forward and option contracts		14
Fair Value, Inputs, Level 2 [Member] | Guaranteed Investment Certificates [Member]
Assets:
Debt investments held in a rabbi trust for the Deferred Compensation Plan	80	80
Fair Value, Inputs, Level 2 [Member] | Foreign Currency Forward and Option Contracts Included in Other Accrued Expenses and Current Liabilities [Member]
Liabilities:
Foreign currency forward and option contracts	5,063	974
Fair Value, Inputs, Level 3 [Member]
Assets:
Total assets
Liabilities:
Long-term debt
Total liabilities
Fair Value, Inputs, Level 3 [Member] | Money Market Funds and Open-End Mutual Funds [Member]
Assets:
Money market funds and open-end mutual funds included in "Cash and cash equivalents"
Money market funds and open-end mutual funds in "Deferred charges and other assets"
Fair Value, Inputs, Level 3 [Member] | Foreign Currency Forward and Option Contracts Included in Other Current Assets [Member]
Assets:
Foreign currency forward and option contracts
Fair Value, Inputs, Level 3 [Member] | Foreign Currency Forward and Option Contracts Included in Deferred Charges and Other Assets [Member]
Assets:
Foreign currency forward and option contracts
Fair Value, Inputs, Level 3 [Member] | Equity Investments Held in a Rabbi Trust for the Deferred Compensation Plan [Member]
Assets:
Debt investments held in a rabbi trust for the Deferred Compensation Plan
Fair Value, Inputs, Level 3 [Member] | Debt Investments Held in a Rabbi Trust for the Deferred Compensation Plan [Member]
Assets:
Debt investments held in a rabbi trust for the Deferred Compensation Plan
Fair Value, Inputs, Level 3 [Member] | Guaranteed Investment Certificates [Member]
Assets:
Debt investments held in a rabbi trust for the Deferred Compensation Plan
Fair Value, Inputs, Level 3 [Member] | Foreign Currency Forward and Option Contracts Included in Other Accrued Expenses and Current Liabilities [Member]
Liabilities:
Foreign currency forward and option contracts