Accrued Expenses and Other Current Liabilities

12 Months Ended

Dec. 31, 2019

Payables and Accruals [Abstract]

Accrued Expenses and Other Current Liabilities

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following: 

	December 31,
	2019		2018
Operating lease liabilities	$	1,813	$	—
Wages and benefits	45,577		51,026
Workers’ compensation	15,695		16,676
Black lung	7,472		8,133
Taxes other than income taxes	24,946		24,140
Current portion of asset retirement obligations	40,574		24,754
Freight accrual	5,851		10,785
Other	12,354		13,185
Total accrued expenses and other current liabilities	$	154,282	$	148,699