Debt and Capital Lease Obligations - Schedule of Long-term Debt and Capital Lease Obligations (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Revolving credit facility and term loan gross	[1]	$ 212,831	$ 207,322
Less unamortized debt issuance costs		(850)	(984)
Total debt		227,479	206,338
Capital lease obligations 4.1% weighted-average interest rate at March 31, 2018 and 3.8% at December 31, 2017, due through 2021		3,839	2,854
Total debt and capital lease obligations		231,318	209,192
Current portion	[2]	(178,252)	(152,599)
Long-term debt and capital lease obligations		53,066	$ 56,593
Brewster Inc. Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility and term loan gross	[1]	$ 15,498

[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.