Note 6. Credit Facilities and Capital Leases (Detail) - Annual Maturities of Capital Lease Commitments, Including Interest (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
2012	$ 4,190
2013	2,734
2014	2,506
2015	1,303
2016	21
Total	10,754
Less: imputed interest	(692)
Net capital lease obligation	$ 10,062	$ 6,300

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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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 fourth 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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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.

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