CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	$ 3,824	$ (831)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(6,482)	(9,464)
Internally developed software costs	(2,136)us-gaap_PaymentsToDevelopSoftware	(1,437)us-gaap_PaymentsToDevelopSoftware
Cash proceeds from sale of assets	1	4
Net cash used in investing activities	(8,617)	(10,897)
CASH FLOWS FROM FINANCING ACTIVITIES:
Debt issuance costs	(612)us-gaap_PaymentsOfDebtIssuanceCosts	(837)us-gaap_PaymentsOfDebtIssuanceCosts
Payments under long-term obligations	(2,496)	(2,133)
Payment of acquisition-related liabilities	(18)	(3,457)
Excess tax benefit related to share-based compensation	31	197
Common stock repurchases	(4,017)	(3,214)
Cash dividends paid	(3,340)us-gaap_PaymentsOfDividendsCommonStock	(3,152)us-gaap_PaymentsOfDividendsCommonStock
Proceeds from exercise of stock options	475	3,146
Net cash used in financing activities	(9,977)	(9,450)
Effect of exchange rate changes on cash	(1,148)	35
NET DECREASE IN CASH AND CASH EQUIVALENTS	(15,918)	(21,143)
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	54,226	40,336
CASH AND CASH EQUIVALENTS, END OF PERIOD	38,308	19,193
Supplemental disclosure of cash flow information:
Cash paid for interest	3,506us-gaap_InterestPaid	3,669us-gaap_InterestPaid
Cash (recovered) paid for income taxes, net	(2,324)us-gaap_IncomeTaxesPaidNet	3,322us-gaap_IncomeTaxesPaidNet
Non-cash investing and financing transactions:
Property, equipment, and leasehold improvements accrued in accounts payable	2,695	6,805
Dividends declared	3,351	3,214
Capital expenditures funded by capital lease borrowings		$ 413us-gaap_CapitalLeaseObligationsIncurred

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Represents the cash outflow associated with the payment of deferred acquisition consideration, classified as financing activities.

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Represents the amount of property, equipment, and leasehold improvements that is accrued in accounts payable and other long-term liabilities during the period.

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The increase during the period in capital lease obligations due to entering into new capital leases.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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The effect of exchange rate changes on cash balances in continuing operations held in foreign currencies.

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Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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The amount of cash paid for interest during the period.

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The increase (decrease) in cash associated with the entity's continuing operating, investing, and financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.

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Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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The cash outflow to reacquire common stock during the period.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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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.

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The cash outflow associated with the development or modification of software programs or applications for internal use (that is, not to be sold, leased or otherwise marketed to others) that qualify for capitalization.

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The total cash inflow associated with the amount received from holders to acquire the entity's shares under incentive and share awards, including stock option exercises. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.

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The cash outflow associated with security instruments that either represent a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer. Includes repayments of (a) debt, (b) capital lease obligations, (c) mandatory redeemable capital securities, and (d) any combination of (a), (b), or (c).

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