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Debt (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2020
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Dec. 31, 2017
Debt Instrument [Line Items]          
Loans Payable $ 37,125,000     $ 38,250,000  
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums (739,000)     (807,000)  
Debt, Current, Net (44,162,000)     49,451,000  
Revolving Line of Credit 7,776,000     12,008,000  
Purchase Price Funded with Debt 49,500,000        
Less current portion (44,901,000)     (50,258,000)  
Working Capital 13,350,000        
Long-term Debt, Gross $ 0     $ 0  
Derivative, Fixed Interest Rate 2.49%        
Percent of subsidiary stock not security for financing 65.00%        
Letter of Credit, Maximum $ 250,000        
Letters of Credit Outstanding, Amount 160,000        
Term Loan Domestic [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount 32,000,000        
Domestic Line of Credit [Member]          
Debt Instrument [Line Items]          
Revolving Line of Credit 2,000,000        
Maximum borrowing capacity 40,000,000        
Term Loan Foreign [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount $ 13,000,000        
Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Interest Rate, Stated Percentage 6.62%     6.04%  
Debt Instrument, Basis Spread on Variable Rate 2.00%        
Foreign Line of Credit [Member]          
Debt Instrument [Line Items]          
Revolving Line of Credit $ 2,500,000        
Existing Term Loan [Member]          
Debt Instrument [Line Items]          
Loans Payable         $ 6,750,000
Line of Credit [Member] | Foreign Line of Credit [Member]          
Debt Instrument [Line Items]          
Maximum borrowing capacity 10,000,000        
First Amendment [Member] | Domestic Line of Credit [Member]          
Debt Instrument [Line Items]          
Maximum borrowing capacity 32,500,000        
Forbearance Agreement [Member] | Domestic Line of Credit [Member]          
Debt Instrument [Line Items]          
Maximum borrowing capacity 28,000,000        
Amended Forbearance Agreement [Member] | Unblocked Domestic Line of Credit [Member]          
Debt Instrument [Line Items]          
Maximum borrowing capacity 20,000,000        
Amended Forbearance Agreement [Member] | Domestic Line of Credit [Member]          
Debt Instrument [Line Items]          
Maximum borrowing capacity 25,000,000        
Amended Forbearance Agreement [Member] | Domestic Line of Credit Additional Amount [Member]          
Debt Instrument [Line Items]          
Maximum borrowing capacity $ 5,000,000        
Derivative, Basis Spread on Variable Rate 6.50%        
Interest Rate Swap Domestic [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount $ 25,000,000        
Interest Rate Swap Foreign [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount 10,000,000        
Interest Rate Swap [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount $ 35,000,000        
Term Loan [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Interest Rate, Stated Percentage 7.50%     6.30%  
Maximum [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Restrictive Covenants     7500000 12500000  
Liability [Member] | Interest Rate Swap [Member]          
Debt Instrument [Line Items]          
Foreign Currency Contracts, Liability, Fair Value Disclosure $ 1,489,000     $ 706,000  
Forecast [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Restrictive Covenants   3500000