Latest period the outstanding debt instruments are required to be repaid.

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- Definition

Earliest period the outstanding debt instruments are required to be repaid.

+ References

No definition available.

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- 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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- Definition

When presenting a range of interest rates, the highest effective rate for funds borrowed under the debt agreement as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

When presenting a range of interest rates, the lowest effective rate for funds borrowed under the debt agreement as of the balance sheet date.

+ References

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- Definition

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

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Fair value of the amount outstanding under the credit facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
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- References

No definition available.

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Paragraph 1
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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 13
-Subparagraph 2, 3
-Article 9

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Debt (Schedule of Debt) (Details) - USD ($) $ in Thousands	3 Months Ended
Debt (Schedule of Debt) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Oct. 04, 2010
Debt Instrument [Line Items]
Revolving credit facility	$ 100,000	$ 100,000
Debt:
Total debt	21,033	18,363
Less: current portion	(16,827)	(13,905)
Total long-term debt, net	4,206	4,458
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility	$ 100,000	100,000
Debt:
Debt interest rate	1.69%
Debt, maturity	September 2019
Senior Notes [Member]
Debt:
Debt interest rate			9.50%
PST Short-Term Notes [Member]
Debt Instrument [Line Items]
Short-term debt	$ 14,205	11,556
Debt:
Debt maturity period range start	2016
Debt maturity period range end	2017
PST Short-Term Notes [Member] \| Maximum [Member]
Debt:
Interest rate maximum	19.66%
PST Short-Term Notes [Member] \| Minimum [Member]
Debt:
Interest rate minimum	4.85%
PST Long-Term Notes [Member]
Debt:
Total long-term debt, net	$ 6,504	6,428
Debt maturity period range start	2017
Debt maturity period range end	2021
PST Long-Term Notes [Member] \| Maximum [Member]
Debt:
Interest rate maximum	8.00%
PST Long-Term Notes [Member] \| Minimum [Member]
Debt:
Interest rate minimum	6.20%
Other [Member]
Debt:
Total debt	$ 324	$ 379