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Debt (Schedule of Debt) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Mar. 25, 2015
Debt Instrument [Line Items]
Revolving credit facility	$ 91,000	$ 96,000
Debt:
Total debt	1,859	2,516
Less: current portion	(1,013)	(1,533)
Total long-term debt, net	846	983
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility	$ 91,000	96,000
Debt:
Debt, maturity	September 2021
Maximum [Member] | Revolving Credit Facility [Member]
Debt:
Long-term debt, weighted average interest rate	3.55%
Minimum [Member] | Revolving Credit Facility [Member]
Debt:
Long-term debt, weighted average interest rate	3.54%
Senior Notes [Member]
Debt:
Debt interest rate			9.50%
PST Short-Term Obligations [Member]
Debt Instrument [Line Items]
Short-term debt	$ 474	989
Debt:
Debt, maturity	December 2019
Interest rate	6.00%
PST Long-Term Notes [Member]
Debt:
Long-term debt	$ 1,385	$ 1,527
Debt, maturity	November 2021
Interest rate	8.00%

X

- Definition

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities.

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Fair value of the amount outstanding under the credit facility.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Weighted average interest rate of long-term debt outstanding calculated at point in time.

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