Lessor Leases Investment in Sale-Type Leases (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Dec. 31, 2018
Capital Leased Assets [Line Items]
Present value adjustment	$ (2,348)	$ (2,477)
Sales-type, Lease Receivable	28,458	25,818
Net Investment in Lease, Current	(8,989)	(8,736)
Net Investment in Lease, Noncurrent	19,469	17,082
Collective allowance for credit losses		200
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received	$ 30,806	$ 28,295
Minimum
Capital Leased Assets [Line Items]
Terms of sales-type leases (in years)	1 year
Maximum
Capital Leased Assets [Line Items]
Terms of sales-type leases (in years)	5 years
Sales Type Lease
Capital Leased Assets [Line Items]
Collective allowance for credit losses	$ 200

Lessor Leasing Arrangements, Capital Leases, Term of Contract

No definition available.

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- Definition

A valuation allowance for receivables due to an Entity for more than one year from the balance sheet date that are expected to be uncollectible.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(4))
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-Section S99
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount of net investment in sales-type and direct financing lease, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77888421&loc=SL77919306-209978

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-Publisher FASB
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- Definition

Amount of net investment in sales-type and direct financing lease, classified as noncurrent.

+ References

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- Definition

Present value of lease payments not yet received by lessor and amount expected to be derived from underlying asset, following end of lease term guaranteed by lessee or other third party unrelated to lessor, from sales-type and direct financing leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=77888428&loc=SL77919391-209981

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-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=77888428&loc=SL77919379-209981

+ Details

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- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases.

+ References

+ Details

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- Definition

Amount of undiscounted lease receivable in excess of discounted receivable for sales-type and direct financing leases.

+ References

+ Details

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