Debt and Financing Arrangements (Tables)

6 Months Ended

Jun. 30, 2017

Debt Disclosure [Abstract]

Summary of Reconciliation of Debt

At June 30, 2017 and December 31, 2016, debt consisted of the following (in thousands):

	June 30, 2017		December 31, 2016
Credit Agreement with Banks, described below	$	55,014	$	—
Senior Notes under a Master Shelf Agreement, described      below		3,571		7,143
Capital Leases, described below		89,783		66,661
Total debt		148,368		73,804
Less: current portion of long-term debt		16,669		16,762
Long-term debt, less current portion	$	131,699	$	57,042

Schedule of Principal Maturities of Long-Term Debt

The principal maturities of long-term debt instruments are as follows (in thousands):

	Amount
2017	$	11,391
2018		15,640
2019		15,640
2020		70,654
2021		16,217
Thereafter		27,949
Total		157,491
Less: Amounts Representing Interest on Capital Leases		9,123
Total	$	148,368