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1. Significant Accounting Policies Earnings per share (Details) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]
Basic weighted average shares outstanding	28,876us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	28,586us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	28,290us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Effect of potentially dilutive stock options and restricted stock awards	257us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	320us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	352us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Diluted weighted average common shares	29,133us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	28,906us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	28,642us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Anti-dilutive shares excluded from the computation of diluted EPS	122us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	107us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	83us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257



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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Antidilution

-URI http://asc.fasb.org/extlink&oid=6505113



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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Diluted Earnings Per Share

-URI http://asc.fasb.org/extlink&oid=6510752



Reference 4: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

+ References

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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