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Consolidated Statements Of Comprehensive Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Revenues	$ 136,336us-gaap_Revenues	$ 120,079us-gaap_Revenues
Cost of services	113,632us-gaap_CostOfServices	101,963us-gaap_CostOfServices
Gross profit	22,704us-gaap_GrossProfit	18,116us-gaap_GrossProfit
Selling, general and administrative expenses	18,700us-gaap_SellingGeneralAndAdministrativeExpense	17,572us-gaap_SellingGeneralAndAdministrativeExpense
Gain (loss) on sale of assets	6us-gaap_GainLossOnDispositionOfAssets	(41)us-gaap_GainLossOnDispositionOfAssets
Income from operations	3,998us-gaap_OperatingIncomeLoss	585us-gaap_OperatingIncomeLoss
Interest and other (income) expense:
Interest expense	288us-gaap_InterestExpense	518us-gaap_InterestExpense
Other income, net	(28)us-gaap_OtherNonoperatingIncome	(197)us-gaap_OtherNonoperatingIncome
Income from operations before income taxes	3,738us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	264us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Provision (benefit) for income taxes	265us-gaap_IncomeTaxExpenseBenefit	(1)us-gaap_IncomeTaxExpenseBenefit
Net income from continuing operations	3,473us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	265us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
Net loss from discontinued operations	(181)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax	(141)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
Net income	3,292us-gaap_NetIncomeLoss	124us-gaap_NetIncomeLoss
Unrealized gain on interest hedge, net of tax	2us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	12us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
Comprehensive income	$ 3,294us-gaap_ComprehensiveIncomeNetOfTax	$ 136us-gaap_ComprehensiveIncomeNetOfTax
Basic earnings per share:
From continuing operations	$ 0.16us-gaap_IncomeLossFromContinuingOperationsPerBasicShare	$ 0.01us-gaap_IncomeLossFromContinuingOperationsPerBasicShare
From discontinued operations	$ (0.01)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	$ 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare
Basic earnings per share	$ 0.15us-gaap_EarningsPerShareBasic	$ 0.01us-gaap_EarningsPerShareBasic
Diluted earnings per share:
From continuing operations	$ 0.16us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare	$ 0.01us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare
From discontinued operations	$ (0.01)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	$ 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare
Diluted earnings per share	$ 0.15us-gaap_EarningsPerShareDiluted	$ 0.01us-gaap_EarningsPerShareDiluted
Shares used in the computation of earnings per share
Basic	21,734,591us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	18,423,397us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted	21,779,728us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	18,507,750us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding

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