Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Details)

v3.6.0.2
Income Taxes - Additional Information (Details) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Contingency [Line Items]      
Valuation allowance $ 7,344,000 $ 7,122,000  
Interest rate swaps 859,000 1,121,000  
Net operating losses 8,044,000 8,220,000  
Unrecognized tax benefits 600,000 2,200,000 $ 3,700,000
Unrecognized tax benefits that would impact effective tax rate 20,000 800,000  
Operating loss carryforward 14,449,000 18,110,000  
Earnings with no repatriation tax 0    
Amount of interest and penalties related to uncertain tax positions (20,000) (200,000) $ (200,000)
State      
Income Tax Contingency [Line Items]      
Net operating losses 216,000 223,000  
Operating loss carryforward 10,700,000    
Federal      
Income Tax Contingency [Line Items]      
Operating loss carryforward 9,800,000    
Federal tax credit relating to excess stock options 12,000    
Net operating loss, related to excess stock options 4,000,000    
Foreign Tax Authority      
Income Tax Contingency [Line Items]      
Deferred tax assets, foreign 6,269,000 $ 5,778,000  
Operating loss carryforward $ 24,100,000