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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Cash Flows from Operating Activities: |  |  |
Net income | $ 45,709 us-gaap_NetIncomeLoss | $ 43,397 us-gaap_NetIncomeLoss | $ 44,777 us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization | 81,125 us-gaap_DepreciationDepletionAndAmortization | 76,849 us-gaap_DepreciationDepletionAndAmortization | 72,476 us-gaap_DepreciationDepletionAndAmortization
Provision for doubtful accounts | 1,825 us-gaap_ProvisionForDoubtfulAccounts | 2,144 us-gaap_ProvisionForDoubtfulAccounts | 4,263 us-gaap_ProvisionForDoubtfulAccounts
Share-based compensation | 3,854 us-gaap_ShareBasedCompensation | 3,680 us-gaap_ShareBasedCompensation | 3,840 us-gaap_ShareBasedCompensation
Gain on sale of used rental equipment | (15,368)us-gaap_GainLossOnSaleOfProperties | (13,091)us-gaap_GainLossOnSaleOfProperties | (12,389)us-gaap_GainLossOnSaleOfProperties
Gain on sale of property, plant and equipment | (812)us-gaap_GainLossOnSaleOfPropertyPlantEquipment |  |
Foreign currency exchange (gain) loss | 331 us-gaap_ForeignCurrencyTransactionGainLossBeforeTax | 189 us-gaap_ForeignCurrencyTransactionGainLossBeforeTax | (35)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Change in: |  |  |
Accounts receivable | (15,469)us-gaap_IncreaseDecreaseInAccountsReceivable | 2,462 us-gaap_IncreaseDecreaseInAccountsReceivable | (3,848)us-gaap_IncreaseDecreaseInAccountsReceivable
Prepaid expenses and other assets | (13,652)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | 8,265 us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | (2,337)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Accounts payable and accrued liabilities | 10,662 us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities | 6,506 us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities | (3,421)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
Deferred income | 5,136 us-gaap_IncreaseDecreaseInDeferredRevenue | (2,921)us-gaap_IncreaseDecreaseInDeferredRevenue | 1,857 us-gaap_IncreaseDecreaseInDeferredRevenue
Deferred income taxes | 19,645 us-gaap_IncreaseDecreaseInDeferredIncomeTaxes | 22,693 us-gaap_IncreaseDecreaseInDeferredIncomeTaxes | 21,198 us-gaap_IncreaseDecreaseInDeferredIncomeTaxes
Net cash provided by operating activities | 122,986 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | 133,643 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | 126,381 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Cash Flows from Investing Activities: |  |  |
Purchases of rental equipment | (152,197)us-gaap_PaymentsToAcquireMachineryAndEquipment | (132,611)us-gaap_PaymentsToAcquireMachineryAndEquipment | (131,805)us-gaap_PaymentsToAcquireMachineryAndEquipment
Purchases of property, plant and equipment | (12,740)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (11,973)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (14,161)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Proceeds from sale of used rental equipment | 32,556 us-gaap_ProceedsFromSaleOfMachineryAndEquipment | 33,380 us-gaap_ProceedsFromSaleOfMachineryAndEquipment | 30,970 us-gaap_ProceedsFromSaleOfMachineryAndEquipment
Proceeds from sale of property, plant and equipment | 2,501 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment |  |
Net cash used in investing activities | (129,880)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (111,204)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (114,996)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Cash Flows from Financing Activities: |  |  |
Net borrowings (repayments) under bank lines of credit | 12,475 us-gaap_ProceedsFromRepaymentsOfLinesOfCredit | (11,997)us-gaap_ProceedsFromRepaymentsOfLinesOfCredit | 5,500 us-gaap_ProceedsFromRepaymentsOfLinesOfCredit
Borrowings under Series B senior notes | 40,000 us-gaap_ProceedsFromIssuanceOfLongTermDebt |  |
Principal payments on Series A senior notes | (20,000)us-gaap_RepaymentsOfSeniorDebt |  |
Proceeds from the exercise of stock options | 1,729 us-gaap_ProceedsFromStockOptionsExercised | 15,067 us-gaap_ProceedsFromStockOptionsExercised | 5,841 us-gaap_ProceedsFromStockOptionsExercised
Excess tax benefit from exercise and disqualifying disposition of stock options | 1,822 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities | 1,329 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities | 1,033 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
Taxes paid related to net share settlement of stock awards | (3,959)us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation | (2,395)us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation | (250)us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation
Payment of dividends | (25,551)us-gaap_PaymentsOfDividends | (24,423)us-gaap_PaymentsOfDividends | (23,126)us-gaap_PaymentsOfDividends
Net cash provided by (used in) financing activities | 6,516 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | (22,419)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | (11,002)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Effect of foreign currency exchange rate changes on cash | (85)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations | (2)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations |
Net increase (decrease) in cash | (463)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 18 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 383 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash balance, beginning of period | 1,630 us-gaap_CashAndCashEquivalentsAtCarryingValue | 1,612 us-gaap_CashAndCashEquivalentsAtCarryingValue | 1,229 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash balance, end of period | 1,167 us-gaap_CashAndCashEquivalentsAtCarryingValue | 1,630 us-gaap_CashAndCashEquivalentsAtCarryingValue | 1,612 us-gaap_CashAndCashEquivalentsAtCarryingValue
Interest paid, during the period | 9,074 us-gaap_InterestPaid | 8,813 us-gaap_InterestPaid | 9,107 us-gaap_InterestPaid
Net income taxes paid, during the period | 22,275 us-gaap_IncomeTaxesPaidNet | 11,074 us-gaap_IncomeTaxesPaidNet | 5,842 us-gaap_IncomeTaxesPaidNet
Dividends accrued during the period, not yet paid | 6,526 us-gaap_DividendsPayableCurrentAndNoncurrent | 6,373 us-gaap_DividendsPayableCurrentAndNoncurrent | 6,194 us-gaap_DividendsPayableCurrentAndNoncurrent
Rental equipment acquisitions, not yet paid | $ 4,942 us-gaap_CapitalExpendituresIncurredButNotYetPaid | $ 8,533 us-gaap_CapitalExpendituresIncurredButNotYetPaid | $ 4,491 us-gaap_CapitalExpendituresIncurredButNotYetPaid

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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=6519514 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=6518256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.19) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.18) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.22) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 + Details
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- Definition Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The cash outflow for acquisition of machinery and equipment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The net cash inflow or cash outflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity that is collateralized (backed by pledge, mortgage or other lien in the entity's assets). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -Subparagraph c -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3098-108585 + Details
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- Definition The cash inflow from sale of machinery and equipment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.5) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 5 -Article 5 + Details
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- Definition The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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