Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt- Senior Secured Credit Facility - Revolver and Term Loan (Details)

v3.7.0.1
Long-Term Debt- Senior Secured Credit Facility - Revolver and Term Loan (Details)
 3 Months Ended
Mar. 31, 2017
USD ($)
Rate
Dec. 31, 2016
USD ($)
Nov. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
bank
Line of Credit Facility [Line Items]        
Number of banks | bank       2
Maximum percentage of investment allowed in non-core subsidiaries 49.00%      
Minimum debt service coverage ratio 1.5      
As of the end of each fiscal quarter ending on or before June 30, 2016        
Line of Credit Facility [Line Items]        
Covenant leverage ratio (not to exceed) 2.00      
As of the end of each fiscal quarter ending September 30, 2016, December 31, 2016, March 31, 2017 and June 30, 2017        
Line of Credit Facility [Line Items]        
Covenant leverage ratio (not to exceed) 2.75      
As of the end of each fiscal quarter ending September 30, 2017 and thereafter        
Line of Credit Facility [Line Items]        
Covenant leverage ratio (not to exceed) 2.00      
Term Loan        
Line of Credit Facility [Line Items]        
Additional borrowing capacity     $ 20,000,000  
Current borrowing capacity     $ 30,000,000 $ 30,000,000
Amount outstanding $ 27,000,000 $ 28,500,000    
Weighted average interest rate 3.08%      
Principal payments due in quarterly installments $ 1,500,000      
Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Additional borrowing capacity       25,000,000
Current borrowing capacity       60,000,000
Capacity available in Canadian Dollars, Euros, and Pounds Sterling (up to)       $ 20,000,000
Amount outstanding $ 33,033,000 $ 15,033,000    
Commitment fee | Rate 0.375%      
Interest rate at period end 4.50%      
Revolving Credit Facility | Adjusted Base Rate Applicable Margin Rate | Maximum        
Line of Credit Facility [Line Items]        
Basis spread on variable rate 0.50%      
Revolving Credit Facility | Adjusted Base Rate Applicable Margin Rate | Minimum        
Line of Credit Facility [Line Items]        
Basis spread on variable rate 0.25%      
Revolving Credit Facility | Federal Funds Rate        
Line of Credit Facility [Line Items]        
Basis spread on variable rate 0.50%      
Revolving Credit Facility | LIBOR        
Line of Credit Facility [Line Items]        
Basis spread on variable rate 1.50%      
Revolving Credit Facility | LIBOR | Maximum        
Line of Credit Facility [Line Items]        
Basis spread on variable rate 2.00%      
Revolving Credit Facility | LIBOR | Minimum        
Line of Credit Facility [Line Items]        
Basis spread on variable rate 1.75%