Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

v3.7.0.1
Basis of Presentation (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Noncontrolling Interest [Line Items]          
Net income (loss) $ (420) $ 2,366 $ 1,443 $ 4,155  
Total shareholders’ equity $ 133,684   $ 133,684   $ 132,398
Noncurrent deferred tax assets         21,600
Accounting Standards Update 2015-07          
Noncontrolling Interest [Line Items]          
Current deferred tax assets         (5,600)
Previously Reported          
Noncontrolling Interest [Line Items]          
Noncurrent deferred tax assets         16,000
Ukraine          
Noncontrolling Interest [Line Items]          
Net sales as a percentage of revenue (as a percentage) 210.00% 200.00% 240.00% 210.00%  
Noncontrolling Interest          
Noncontrolling Interest [Line Items]          
Net income (loss)     $ (530) $ (500)  
Total shareholders’ equity $ 756   $ 756   $ 1,286