Supplemental Guarantor Information Consolidating Condensed Statement of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided (Used) by Operating Activities	$ (22,791)	$ (7,020)
Investing Activities
Purchases of property and equipment	(2,818)	(3,626)
Proceeds from sale of property and equipment	78	1
Other long-term assets	13,392	(197)
Other	(3)	(144)
Net Cash Provided (Used) by Investing Activities	10,649	(3,966)
Financing Activities
Proceeds from revolving lines of credit and long-term borrowings	71,064	62,525
Payments on revolving lines of credit and long-term borrowings	(73,633)	(60,195)
Proceeds from exercise of stock options	200	85
Payment of financing costs	(1,391)us-gaap_PaymentsOfFinancingCosts	0us-gaap_PaymentsOfFinancingCosts
Payment of dividends	(397)us-gaap_PaymentsOfDividendsCommonStock	(396)us-gaap_PaymentsOfDividendsCommonStock
Net Cash Provided (Used) by Financing Activities	(4,157)	2,019
Effect of exchange rate changes on cash	(2,014)	442
Decrease in cash and cash equivalents	(18,313)	(8,525)
Cash and cash equivalents at beginning of year	38,931	29,785
Cash and cash equivalents at end of period	20,618	21,260
The Company (Parent) [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided (Used) by Operating Activities	(19,001)	(1,033)
Investing Activities
Purchases of property and equipment	(30)	(649)
Proceeds from sale of property and equipment	30	0
Other long-term assets	12,826	(193)
Other	257	(144)
Net Cash Provided (Used) by Investing Activities	13,083	(986)
Financing Activities
Proceeds from revolving lines of credit and long-term borrowings	71,064	61,547
Payments on revolving lines of credit and long-term borrowings	(66,097)	(57,885)
Proceeds from exercise of stock options	200	85
Payment of financing costs	(1,391)
Payment of dividends	(397)	(396)
Net Cash Provided (Used) by Financing Activities	3,379	3,351
Effect of exchange rate changes on cash	0	0
Decrease in cash and cash equivalents	(2,539)	1,332
Cash and cash equivalents at beginning of year	7,340	1,401
Cash and cash equivalents at end of period	4,801	2,733
Combined Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided (Used) by Operating Activities	4,918	2,824
Investing Activities
Purchases of property and equipment	(200)	(615)
Proceeds from sale of property and equipment	47	0
Other long-term assets	0	0
Other	(260)	0
Net Cash Provided (Used) by Investing Activities	(413)	(615)
Financing Activities
Proceeds from revolving lines of credit and long-term borrowings	0	0
Payments on revolving lines of credit and long-term borrowings	(4,512)	(2,310)
Proceeds from exercise of stock options	0	0
Payment of financing costs	0
Payment of dividends	0	0
Net Cash Provided (Used) by Financing Activities	(4,512)	(2,310)
Effect of exchange rate changes on cash	0	0
Decrease in cash and cash equivalents	(7)	(101)
Cash and cash equivalents at beginning of year	355	313
Cash and cash equivalents at end of period	348	212
Combined Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided (Used) by Operating Activities	(8,708)	(8,811)
Investing Activities
Purchases of property and equipment	(2,588)	(2,362)
Proceeds from sale of property and equipment	1	1
Other long-term assets	566	(4)
Other	0	0
Net Cash Provided (Used) by Investing Activities	(2,021)	(2,365)
Financing Activities
Proceeds from revolving lines of credit and long-term borrowings	0	978
Payments on revolving lines of credit and long-term borrowings	(3,024)	0
Proceeds from exercise of stock options	0	0
Payment of financing costs	0
Payment of dividends	0	0
Net Cash Provided (Used) by Financing Activities	(3,024)	978
Effect of exchange rate changes on cash	(2,014)	442
Decrease in cash and cash equivalents	(15,767)	(9,756)
Cash and cash equivalents at beginning of year	31,236	28,071
Cash and cash equivalents at end of period	15,469	18,315
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided (Used) by Operating Activities	0	0
Investing Activities
Purchases of property and equipment	0	0
Proceeds from sale of property and equipment	0	0
Other long-term assets	0	0
Other	0	0
Net Cash Provided (Used) by Investing Activities	0	0
Financing Activities
Proceeds from revolving lines of credit and long-term borrowings	0	0
Payments on revolving lines of credit and long-term borrowings	0	0
Proceeds from exercise of stock options	0	0
Payment of financing costs	0
Payment of dividends	0	0
Net Cash Provided (Used) by Financing Activities	0	0
Effect of exchange rate changes on cash	0	0
Decrease in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of year	0	0
Cash and cash equivalents at end of period	$ 0	$ 0

Payments for or proceeds from long-term assets related to pensions, life insurance, deferred debt financing fees, etc.

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Payments on revolving lines of credit and long-term debt and capital lease obligations.

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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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Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the 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. Includes effect from exchange rate changes.

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Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) from investing activities, including 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 net cash outflow or inflow from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

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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 for loan and debt issuance costs.

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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 inflow 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 maturities due beyond one year or the operating cycle, if longer.

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The cash inflow from sale of other property, plant and equipment, used to produce goods or deliver services, and not otherwise defined in the taxonomy.

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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.

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