Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Consolidated Statements of Comprehensive Income
Net income	$ 19,367	$ 14,800	$ 16,423
Other comprehensive income
Mark to market of interest rate hedges, net of tax expense of $317, $398 and $312 for 2014, 2013 and 2012, respectively	555	697	545
Minimum pension liability adjustments, net of tax (benefit) expense of $(46), $112 and $36, for 2014, 2013 and 2012, respectively	(81)	197	64
Total other comprehensive income	474	894	609
Comprehensive income	$ 19,841us-gaap_ComprehensiveIncomeNetOfTax	$ 15,694us-gaap_ComprehensiveIncomeNetOfTax	$ 17,032us-gaap_ComprehensiveIncomeNetOfTax

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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

-Publisher FASB

-Name Accounting Standards Codification

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

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

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans, attributable to parent entity.

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

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-Topic 810

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), attributable to parent entity.

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