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Supplemental Consolidated Balance Sheet Information (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Other current liabilities
Accrued self-insurance reserves	$ 1,422,000	$ 1,830,000
Income and franchise taxes payable	39,000	21,000
Other accrued expenses and current liabilities	1,522,000	2,753,000
Total other current liabilities	$ 2,983,000	$ 4,604,000

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Amount of liabilities incurred and payable to vendors for goods and services received classified as other, and expenses incurred but not yet paid, payable within one year or the operating cycle, if longer.

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Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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Carrying amount of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property that are expected to be paid within one year (or 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 income, sales, use, payroll, excise, real, property and other 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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