Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Revenue Disclosures - Revenue Related to Performance Obligations (Details)

v3.8.0.1
Note 2 - Revenue Disclosures - Revenue Related to Performance Obligations (Details)
$ in Thousands
Mar. 31, 2018
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-04-01  
Revenue expected to be recognized $ 1,497
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01  
Revenue expected to be recognized 1,987
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01  
Revenue expected to be recognized 1,988
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01  
Revenue expected to be recognized 1,863
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01  
Revenue expected to be recognized 1,432
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01  
Revenue expected to be recognized 2,822
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil)  
Revenue expected to be recognized $ 11,589