Fair Value Disclosures (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Assets:
Available for sale securities	$ 7,220us-gaap_AvailableForSaleSecurities	$ 6,540us-gaap_AvailableForSaleSecurities
Interest rate swap agreements	181	937
Foreign currency exchange contracts	292	83
Assets:	7,693us-gaap_AssetsFairValueDisclosure	7,560us-gaap_AssetsFairValueDisclosure
Liabilities:
Interest rate swap agreements	412
Foreign currency exchange contracts		14
Contingent consideration		1,581us-gaap_GuaranteesFairValueDisclosure
Liabilities:	412us-gaap_LiabilitiesFairValueDisclosure	1,595us-gaap_LiabilitiesFairValueDisclosure
Quoted prices in active markets for identical assets (level 1)
Assets:
Available for sale securities	7,220	6,540
Interest rate swap agreements	0	0
Foreign currency exchange contracts	0	0
Assets:	7,220	6,540
Liabilities:
Interest rate swap agreements	0
Foreign currency exchange contracts		0
Contingent consideration		0
Liabilities:	0	0
Significant other observable inputs (level 2)
Assets:
Available for sale securities	0	0
Interest rate swap agreements	181	937
Foreign currency exchange contracts	292	83
Assets:	473	1,020
Liabilities:
Interest rate swap agreements	412
Foreign currency exchange contracts		14
Contingent consideration		0
Liabilities:	412	14
Significant unobservable inputs (level 3)
Assets:
Available for sale securities	0	0
Interest rate swap agreements	0	0
Foreign currency exchange contracts	0	0
Assets:	0	0
Liabilities:
Interest rate swap agreements	0
Foreign currency exchange contracts		0
Contingent consideration		1,581
Liabilities:	$ 0	$ 1,581

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

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-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps.

+ References

No definition available.

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Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into.

+ References

No definition available.

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- Definition

Fair value portion of guarantee, including, but not limited to, financial standby letter of credit, fair value guarantee, guarantee of collection of scheduled contractual cash flows from financial assets, and contracts that contingently require the guarantor to make payments or perform services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 5

-Subparagraph (a)

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- Definition

Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets.

+ 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)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611

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Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

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Fair value of financial and nonfinancial obligations.

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