Other Assets Other Assets (Details 3) $ in Thousands	Dec. 31, 2017 USD ($)
Other Assets [Abstract]
Capital Leases, Future Minimum Payments Receivable, Next Twelve Months	$ 12,833
Capital Leases, Future Minimum Payments, Receivable in Two Years	12,837
Capital Leases, Future Minimum Payments, Receivable in Three Years	12,841
Capital Leases, Future Minimum Payments, Receivable in Four Years	12,845
Capital Leases, Future Minimum Payments, Receivable in Five Years	12,849
Capital Leases, Future Minimum Payments, Receivable Thereafter	31,068
Capital Leases, Future Minimum Payments Receivable	$ 95,273