Annual report pursuant to Section 13 and 15(d)

Note 10 - Fair Value Measurements (Details Textual)

v3.19.1
Note 10 - Fair Value Measurements (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Derivative, Gain (Loss) on Derivative, Net, Total $ 1,600    
Impairment of Long-Lived Assets Held-for-use $ 14,600 $ 27,500 $ 119,700