LONG-TERM DEBT AND FINANCING ARRANGEMENTS (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Long-term debt obligations
Long-term debt	$ 155,476	$ 127,730
Less current portion	22,639	25,256
Long-term debt, less current portion	132,837	102,474
Payments under long-term debt obligations
Due in one year or less	24,983
Due after one year through two years	21,426
Due after two years through three years	46,366
Due after three years through four years	2,463
Due after four years through five years	71,984
Total payments	167,222
Less amounts representing interest	11,746
Long-term debt	155,476	127,730
Credit Facility
Long-term debt obligations
Long-term debt	70,000
Interest rate (as a percent)	1.40%
Payments under long-term debt obligations
Due in one year or less	1,138
Due after one year through two years	1,603
Due after two years through three years	1,998
Due after three years through four years	2,235
Due after four years through five years	71,790
Total payments	78,764
Less amounts representing interest	8,764
Long-term debt	70,000
Term Loan
Long-term debt obligations
Long-term debt		70,000
Payments under long-term debt obligations
Long-term debt		70,000
Accounts receivable securitization program
Long-term debt obligations
Long-term debt	35,000
Interest rate (as a percent)	1.00%
Payments under long-term debt obligations
Due in one year or less	418
Due after one year through two years	650
Due after two years through three years	35,630
Total payments	36,698
Less amounts representing interest	1,698
Long-term debt	35,000
Notes payable
Long-term debt obligations
Long-term debt	49,547	56,759
Weighted-average interest rate (as a percent)	2.00%
Payments under long-term debt obligations
Due in one year or less	23,213
Due after one year through two years	18,959
Due after two years through three years	8,518
Total payments	50,690
Less amounts representing interest	1,143
Long-term debt	49,547	56,759
Capital lease obligations
Long-term debt obligations
Long-term debt	929	971
Weighted-average interest rate (as a percent)	5.80%
Payments under long-term debt obligations
Due in one year or less	214
Due after one year through two years	214
Due after two years through three years	220
Due after three years through four years	228
Due after four years through five years	194
Total payments	1,070
Less amounts representing interest	141
Long-term debt	$ 929	$ 971

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Represents aggregate future amounts due of contractually required rental payments on leases meeting the criteria for capitalization and maturities on long-term debt, including interest.

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Represents amount of contractually required rental payments on leases meeting the criteria for capitalization and maturities on long-term debt, including interest, due within one year of the latest balance sheet date presented.

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Represents amount of contractually required rental payments on leases meeting the criteria for capitalization and maturities on long-term debt, including interest, due after four and within five years of the latest balance sheet date presented.

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Represents amount of contractually required rental payments on leases meeting the criteria for capitalization and maturities on long-term debt, including interest, due after three and within four years of the latest balance sheet date presented.

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Represents amount of contractually required rental payments on leases meeting the criteria for capitalization and maturities on long-term debt, including interest, due after two and within three years of the latest balance sheet date presented.

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Represents amount of contractually required rental payments on leases meeting the criteria for capitalization and maturities on long-term debt, including interest, due after one and within two years of the latest balance sheet date presented.

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Represents the interest amount by which the contractually required payments on capital leases and long-term debt are reduced to calculate the present value of the long-term debt and capital lease obligations.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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

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-Name Accounting Standards Codification

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-SubTopic 30

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Weighted average interest rate of debt outstanding.

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Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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-Name Accounting Standards Codification

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-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section H

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Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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Amount of long-term debt and capital lease obligations including current maturities.

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