Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Capital Leases
Capital Leases, 2012	$ 412
Capital Leases, 2013	349
Capital Leases, 2014	36
Capital Leases, 2015	0
Capital Leases, 2016	0
Capital Leases, Thereafter	0
Capital Leases, Total minimum lease payments	797
Capital Leases, Less amounts representing interest	48
Capital Leases, Present value of minimum lease payments included in long-term debt	749
Operating Leases
Operating Leases, 2012	5,635
Operating Leases, 2013	4,585
Operating Leases, 2014	3,453
Operating Leases, 2015	1,554
Operating Leases, 2016	1,127
Operating Leases, Thereafter	3,913
Operating Leases, Total minimum lease payments	20,267
Total Capital and Operating Leases, 2012	6,047
Total Capital and Operating Leases, 2013	4,934
Total Capital and Operating Leases, 2014	3,489
Total Capital and Operating Leases, 2015	1,554
Total Capital and Operating Leases, 2016	1,127
Total Capital and Operating Leases, Thereafter	3,913
Total Capital and Operating Leases, minimum lease payments	$ 21,064

Capital and operating leases future minimum payments due.

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Capital and operating leases future minimum payments due in five years.

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Capital and operating leases future minimum payments due in four years.

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Capital and operating leases future minimum payments due in three years.

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Capital and operating leases future minimum payments due in two years.

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Capital and operating leases future minimum payments due thereafter.

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The total of contractually required rental payments on leases meeting the criteria for capitalization.

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Contractually required rental payments on leases meeting the criteria for capitalization, due within one year of the balance sheet date.

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Contractually required rental payments on leases meeting the criteria for capitalization, due within the fifth year from the balance sheet date.

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Contractually required rental payments on leases meeting the criteria for capitalization, due within the third year from the balance sheet date.

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Contractually required rental payments on leases meeting the criteria for capitalization, due within the second year from the balance sheet date.

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Amount necessary to reduce net minimum lease payments to present value calculated at the lesser of the interest rate implicit in the lease (if known) or the entity's incremental borrowing rate (as defined) at inception of the lease.

+ References

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The discounted value of future cash flows under leases meeting the criteria for capitalization.

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The total of future contractually required payments on leases defined as operating.

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For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within the second year of the balance sheet date relating to leases defined as operating.

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