Note 10 - Leases - Payments Under Non-cancelable Operating Leases and Capital Leases (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Capital leases, 2019	$ 258
Operating leases, 2019	882
Capital leases, 2020	241
Operating leases, 2020	672
Capital leases, 2021	214
Operating leases, 2021	564
Capital leases, 2022	168
Operating leases, 2022	273
Capital leases, 2023	85
Operating leases, 2023	262
Capital leases, Total minimum lease payments	966
Less: Amount representing interest	(86)
Present value of minimum lease payments	880
Less: Current maturities	(204)
Capital lease obligations, net of current portion	$ 676

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