Income Tax (Reconciliation of unrecognized tax benefits) (Details) - USD ($)	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reconciliation Of Unrecognized Tax Benefits Excluding Amounts Pertaining To Examined Tax Returns Roll Forward
Balance at beginning of year	$ 2,560,000	$ 4,042,000	$ 5,452,000
Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions	175,000	187,000	287,000
Unrecognized Tax Benefits Increases Resulting From Acquisition	0	0	0
Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities	(560,000)	(1,388,000)	0
Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations	0	(281,000)	(1,697,000)
Balance at end of year	$ 2,175,000	$ 2,560,000	$ 4,042,000

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
-URI http://asc.fasb.org/extlink&oid=6527854

+ Details

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- Definition

Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

+ References

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- Definition

Amount of increase in unrecognized tax benefits resulting from acquisitions.

+ References

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- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

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- Definition

Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

+ References

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