Fair Value of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financial instruments
Restricted cash	$ 4,124	$ 2,634
Foreign currency forward contracts, net	(587)	(205)
Transfer of asset from level 1 to level 2	0	0
Transfer of asset from level 2 to level 1	0	0
Transfer of liabilities from level 1 to level 2	0	0
Transfer of liabilities from level 2 to level 1	0	0
Recurring \| Total
Financial instruments
Cash and cash equivalents	34,722	26,855
Restricted cash	4,124	2,634
Notes payable to bank		(11,500)
Variable interest rate debt	(26,635)	(8,489)
Contingent purchase price payment	(7,500)	(7,280)
Foreign currency forward contracts, net	(587)	(205)
Recurring \| Level 1
Financial instruments
Cash and cash equivalents	34,722	26,855
Restricted cash	4,124	2,634
Recurring \| Level 2
Financial instruments
Notes payable to bank		(11,500)
Variable interest rate debt	(26,635)	(8,489)
Foreign currency forward contracts, net	(587)	(205)
Recurring \| Level 3
Financial instruments
Contingent purchase price payment	$ (7,500)	$ (7,280)

Amount of liability recognized arising from contingent consideration in a business combination.

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Fair value portion 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.

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Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

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Amount of transfers of liabilities measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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Amount of transfers of liabilities measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

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Fair value as of the balance sheet date of foreign currency derivative assets, net of foreign currency derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet.

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Fair value portion of notes payable.

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-Name Regulation S-X (SX)

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The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. For a classified balance sheet represents the current portion only (the noncurrent portion has a separate concept); there is a separate and distinct element for unclassified presentations.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.

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