Debt and Capital Lease Obligations - Schedule of Long-term Debt and Capital Lease Obligations (Details) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Revolving credit facility and term loan gross	[1]	$ 207,322	$ 212,750
Less unamortized debt issuance costs		(984)	(1,464)
Total debt		206,338	247,742
Capital lease obligations, 3.8% weighted-average interest rate at December 31, 2017 and 4.9% at December 31, 2016, due through 2021		2,854	1,469
Total debt and capital lease obligations		209,192	249,211
Current portion	[2]	(152,599)	(174,968)
Long-term debt and capital lease obligations		$ 56,593	74,243
Brewster Inc. Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility and term loan gross	[1]		$ 36,456

[1] Represents the weighted-average interest rate in effect at the respective periods for the revolving credit facilities and term loan borrowings, including any applicable margin. The interest rates do not include amortization of debt issuance costs or commitment fees.

[2] Borrowings under the revolving credit facilities are classified as current because all borrowed amounts are due within one year.