Commitments and Contingencies (Operating Lease) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Approximate minimum annual rentals under operating lease obligations and sublease receivables
Operating Lease Obligations, 2013	$ 3,756
Operating Lease Obligations, 2014	3,100
Operating Lease Obligations, 2015	2,554
Operating Lease Obligations, 2016	2,391
Operating Lease Obligations, 2017	1,479
Operating Lease Obligations, Thereafter	32
Operating Lease Obligations, Total	$ 13,312

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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Amount of required minimum rental payments maturing in the fifth 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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Amount of required minimum rental payments maturing in the forth 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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Amount of required minimum rental payments maturing in the third 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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Amount of required minimum rental payments maturing in the second 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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Amount of required minimum rental payments maturing after the fifth 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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