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Revolving Credit Facility and Long-Term Debt (Tables)
 3 Months Ended
Mar. 31, 2018
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments
Principal balances outstanding under our long-term debt obligations as of March 31, 2018 and December 31, 2017, consisted of the following (in thousands):
 
March 31, 2018
 
December 31, 2017
2016 Term loan
$
82,500

 
$
85,000

2016 Revolving credit loans
297,500

 
187,000

Collateralized debt facility
6,983

 
6,959

Less unamortized debt issuance costs
(453
)
 
(487
)
Total long-term debt
386,530

 
278,472

Less current portion
20,733

 
19,459

Long-term portion
$
365,797

 
$
259,013
Schedule of Long-term Debt Covenants
The Second Amended Credit Agreement requires that we maintain certain financial covenants, as follows:
 
 
 
Covenant Requirement
Consolidated Total Leverage Ratio (1)
 
 
 
January 1, 2018 and thereafter
 
3.5 to 1.0
Consolidated EBITDA (2)
 
1.25 to 1.0
Consolidated Net Income (3)
 
$—
Facility Capital Expenditures (4)
 
$30 million
 
 
 
 
(1) 
Maximum Consolidated Total Leverage Ratio (as defined in the Second Amended Credit Agreement) as of any fiscal quarter end.
(2) 
Minimum ratio of Consolidated EBITDA (as defined in the Second Amended Credit Agreement and adjusted for certain expenditures) to Consolidated Fixed Charges (as defined in the Second Amended Credit Agreement) for any period of four consecutive fiscal quarters.
(3) 
Minimum level of Consolidated Net Income (as defined in the Second Amended Credit Agreement) for certain periods, and subject to certain adjustments.
(4) 
Maximum level of the aggregate amount of all Facility Capital Expenditures (as defined in the Second Amended Credit Agreement) in any fiscal year.
Schedule of Maturities of Long-term Debt
Future minimum principal payments on our long-term debt as of March 31, 2018, are as follows (in thousands):
Years Ending 
 
Future Minimum
December 31
 
Principal Payments
Remaining 2018
 
$
16,983

2019
 
15,000

2020
 
17,500

2021
 
337,500

Total future minimum principal payments
 
$
386,983