The following table summarizes the aggregate workers’ compensation reserve activity (in thousands):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2014		2013		2014		2013
Beginning balance
Workers’ compensation claims liabilities	$	122,506	$	84,543	$	112,444	$	70,564
Add: claims expense accrual:
Current period		39,876		17,396		73,775		44,825
Prior periods		61,283		5,002		66,387		12,688

Total expense accrual		101,159		22,398		140,162		57,513

Less: claim payments related to:
Current period		3,995		3,124		7,133		5,998
Prior periods		11,327		7,837		37,130		26,099

Total paid		15,322		10,961		44,263		32,097

Ending balance
Workers’ compensation claims liabilities	$	208,343	$	95,980	$	208,343	$	95,980

Incurred but not reported (IBNR)	$	117,688	$	59,412	$	117,688	$	59,412