Net Investment in Sales-type Leases (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
2013	$ 5,857
2014	4,047
2015	2,443
2016	1,375
2017	440
Thereafter	7
Capital Leases Future Minimum Payments Receivable	$ 14,169

Amount of minimum lease payments to be received by the lessor for capital leases.

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Amount of minimum lease payments to be received by the lessor in the next fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments to be received by the lessor after the fifth fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments to be received by the lessor in the fourth fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments to be received by the lessor in the third fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments to be received by the lessor in the second fiscal year following the latest fiscal year for capital leases.

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