v3.3.1.900

Fair Value Measurements and Disclosures (Details) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2015

Dec. 31, 2014

Dec. 31, 2013

Fair value adjustment of marketable securities and deferred compensation plan liability

Net gain on marketable securities

$ (269)

$ 397

$ 1,489

Fair Value (Level 1) [Member]

Assets and Liabilities Reported at Fair Value

Marketable securities

^[1],[2]

$ 12,882

$ 11,971

[1]	Fair value calculated using Level 1 inputs based on quoted prices in active markets for identical securities.
[2]	The marketable securities are held in a limited rabbi trust.

X

- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

No definition available.

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Balance Type:	debit
Period Type:	instant

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- References

No definition available.

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- References

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X

- Definition

This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 7
-Article 5

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- Details

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