Other Accrued Liabilities - Schedule of Other Accrued Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Other Liabilities Disclosure [Abstract]
Payroll taxes	$ 3,354us-gaap_AccruedPayrollTaxesCurrent	$ 3,559us-gaap_AccruedPayrollTaxesCurrent
Property, sales and other taxes	12,702	6,398
Commissions payable	3,917us-gaap_AccruedSalesCommissionCurrent	2,160us-gaap_AccruedSalesCommissionCurrent
Accrued vendor costs	10,162	7,384
Other	5,063us-gaap_OtherSundryLiabilitiesCurrent	4,279us-gaap_OtherSundryLiabilitiesCurrent
Total	$ 35,198us-gaap_OtherAccruedLiabilitiesCurrent	$ 23,780us-gaap_OtherAccruedLiabilitiesCurrent

Carrying value as of the balance sheet date of obligations incurred and payable for real and property taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred and payable for statutory payroll taxes incurred through that date and withheld from employees pertaining to services received from them, including entity's matching share of the employees FICA taxes and contributions to the state and federal unemployment insurance programs. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for sales commissions. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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