Debt and Financing Arrangements (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Summary of Reconciliation of Debt

At December 31, debt consisted of the following (in thousands):

	December 31, 2017		December 31, 2016
Credit Agreement with Banks, described below	$	43,000	$	—
Senior Notes under a Master Shelf Agreement, described below		—		7,143
Capital Leases, described below		89,916		66,661
Total debt		132,916		73,804
Less: current portion of long-term debt		14,083		16,762
Long-term debt, less current portion	$	118,833	$	57,042

Schedule of Principal Maturities of Long-Term Debt Including Interest On Capital Leases

The principal maturities of long-term debt, including interest on capital leases, for the next five years (in thousands) are as follows:

	Amount
2018	$	16,652
2019		16,652
2020		59,652
2021		17,230
2022		15,794
Thereafter		15,667
Total		141,647
Less: Amounts Representing Interest on Capital Leases		8,731
Total	$	132,916