Accrued Expenses And Other Current Liabilities (Tables)

3 Months Ended

Mar. 31, 2013

Accrued Expenses And Other Current Liabilities [Abstract]

Schedule Of Accrued Expenses And Other Current Liabilities

	March 31,	December 31,
	2013	2012
	(in thousands)
Payroll, bonus and vacation expense	$                3,074	$                4,086
Non income taxes	3,223	3,318
Royalty expenses	1,668	2,536
Accrued interest	691	671
Health claims	1,506	1,479
Workers’ compensation & pneumoconiosis	1,784	1,784
Deferred revenues	3,159	2,788
Accrued insured litigation claims	710	2,783
Other	1,874	2,733
Total	$              17,689	$              22,178