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Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Estimated future minimum rental payments under operating leases with non-cancelable lease term
2013	$ 6,730
2014	5,312
2015	3,124
2016	1,279
2017 and thereafter	7,337
Total	$ 23,782

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Operating leases future minimum payments due in five years and thereafter.

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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