Derivative Instruments, Hedging Activities and Fair Value (Details 4) - USD ($)	9 Months Ended
Sep. 30, 2017	Sep. 30, 2016
Derivatives Designated as Hedging Instruments
Proceeds from cross-currency interest rate swap termination	$ 0	$ 16,625,000
Designated as hedging instrument \| Maturing 2017
Derivatives Designated as Hedging Instruments
Contractual Amount	$ 700,000.0

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

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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.

+ Details

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- Definition

The cash inflow from a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 27
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3581-108585

+ Details

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- Details

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- Details

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