Accrued Expenses and Other Current Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accrued Expenses and Other Current Liabilities
Salaries and benefits	$ 15,910	$ 15,160
Interest	2,550us-gaap_InterestPayableCurrent	2,576us-gaap_InterestPayableCurrent
Other taxes	939	1,051
Accrued expenses	19,399us-gaap_AccruedLiabilitiesCurrent	18,787us-gaap_AccruedLiabilitiesCurrent
Other Liabilities Current
Other postretirement benefits, current	2,660	2,611
Installment financing contracts, current	2,787hwtl_ContractualObligationCurrent	1,508hwtl_ContractualObligationCurrent
Other	1,343us-gaap_OtherSundryLiabilitiesCurrent	2,293us-gaap_OtherSundryLiabilitiesCurrent
Other current liabilities	$ 6,790us-gaap_OtherLiabilitiesCurrent	$ 6,412us-gaap_OtherLiabilitiesCurrent

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Represents obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.

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No definition available.

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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, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. 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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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. 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

Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed.

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- Definition

Obligations not otherwise itemized or categorized in the footnotes to the financial statements that are due within one year or operating cycle, if longer, from the balance sheet date.

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For a classified balance sheet, the amount recognized in balance sheet as a current liability associated with an underfunded defined benefit plan.

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