Commitments and Contingencies (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Capital Leases
2019	$ 73
2020	78
2021	63
2022	33
2023	3
Total minimum lease payments	250
Operating Lease
2019	203
2020	45
2021
2022
2023
Total minimum lease payments	248
Less: amounts representing interest (6.39%, ranging from 10.48% to 11.56%)	37
Present value of minimum lease payments	213
Less: current installments under capital lease obligations	77
Total long-term portion	$ 212	$ 232

Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84164758&loc=d3e45023-112735

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737

Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682