Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Summary of Long-term Debt (Details)

v3.8.0.1
Long-Term Debt - Summary of Long-term Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Debt Instrument [Line Items]    
Long-term debt $ 251,366 $ 202,168
Less - current maturities 26,253 22,375
Less - deferred financing fees 6,715 6,556
Long-term debt $ 218,398 173,237
Term Loan | Variable rate term loan payable in semi-annual installments through February 2021    
Debt Instrument [Line Items]    
Weighted average interest rate 4.55%  
Long-term debt $ 1,220 1,220
Term Loan | Variable rate term loan payable in semi-annual installments through June 2024    
Debt Instrument [Line Items]    
Weighted average interest rate 4.05%  
Long-term debt $ 8,295 8,295
Term Loan | Variable rate term loan payable in quarterly installments through December 2024    
Debt Instrument [Line Items]    
Weighted average interest rate 4.95%  
Long-term debt $ 8,757 8,757
Term Loan | Term loan payable in quarterly installments through March 2021    
Debt Instrument [Line Items]    
Fixed interest rate 7.25%  
Long-term debt $ 1,917 2,218
Term Loan | Variable rate term loan payable in quarterly installments through June 2020    
Debt Instrument [Line Items]    
Fixed interest rate 6.11%  
Long-term debt $ 4,393 4,551
Term Loan | Variable rate term loan payable in quarterly installments through June 2020    
Debt Instrument [Line Items]    
Weighted average interest rate 5.31%  
Long-term debt $ 32,322 32,711
Term Loan | Variable rate term loan payable in quarterly installments through October 2023    
Debt Instrument [Line Items]    
Weighted average interest rate 4.80%  
Long-term debt $ 18,367 18,346
Term Loan | Term loan payable in quarterly installments through June 2031    
Debt Instrument [Line Items]    
Fixed interest rate 4.95%  
Long-term debt $ 4,411 4,605
Term Loan | Term loan payable in quarterly installments through February 2034    
Debt Instrument [Line Items]    
Fixed interest rate 5.61%  
Long-term debt $ 3,044 3,128
Term Loan | Variable rate construction loan payable, due June 2018    
Debt Instrument [Line Items]    
Weighted average interest rate 7.00%  
Long-term debt $ 1,696 1,721
Term Loan | Term loan payable in quarterly installments through April 2027    
Debt Instrument [Line Items]    
Fixed interest rate 4.50%  
Long-term debt $ 18,327 13,325
Term Loan | Term loan payable in quarterly installments through March 2028    
Debt Instrument [Line Items]    
Fixed interest rate 5.00%  
Long-term debt $ 4,262 4,258
Term Loan | Variable rate term loan payable in quarterly installments through December 2027    
Debt Instrument [Line Items]    
Weighted average interest rate 4.58%  
Long-term debt $ 14,038 14,034
Term Loan | Variable rate term loan payable in quarterly installments through August 2022    
Debt Instrument [Line Items]    
Weighted average interest rate 9.27%  
Long-term debt $ 28,500 0
Capital Lease Obligations    
Debt Instrument [Line Items]    
Long-term debt $ 35,867 35,013
Revolving Senior Secured Credit Facility    
Debt Instrument [Line Items]    
Weighted average interest rate 4.31%  
Long-term debt $ 65,950 $ 49,986