Commitments and Contingencies Future minimum lease payments (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Operating leases:
2017	$ 1,896
2018	1,884
2019	1,852
2020	1,909
2021	1,967
Thereafter	3,248
Liability	12,756
Financing lease:
2017	1,255
2018	1,348
2019	1,395
2020	1,443
2021	1,493
Thereafter	542
Total	7,476
Capital leases:
2017	124
2018	96
2019	39
2020	0
2021	0
Thereafter	0
Total	$ 259

Amount of minimum lease payments for capital leases.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

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Amount of minimum lease payments for sale-leaseback transactions accounted for using the deposit method or as a financing.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 40
-Section 50
-Paragraph 2
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 20
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-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717

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-URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697

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