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Workers' Compensation Claims (Tables)
 3 Months Ended
Mar. 31, 2017
Text Block [Abstract]  
Summarizes Aggregate Workers' Compensation Reserve Activity

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

 

 

 

Three Months Ended

 

 

 

March 31,

 

 

 

2017

 

 

2016

 

Beginning balance

 

 

 

 

 

 

 

 

Workers' compensation claims liabilities

 

$

312,537

 

 

$

255,675

 

Add: claims expense accrual

 

 

 

 

 

 

 

 

Current period

 

 

35,275

 

 

 

31,155

 

Prior periods

 

 

2,914

 

 

 

848

 

 

 

 

38,189

 

 

 

32,003

 

Less: claim payments related to

 

 

 

 

 

 

 

 

Current period

 

 

1,132

 

 

 

1,271

 

Prior periods

 

 

23,464

 

 

 

21,264

 

 

 

 

24,596

 

 

 

22,535

 

 

 

 

 

 

 

 

 

 

Add: Change in claims incurred in excess of retention limits

 

 

103

 

 

 

—

 

 

 

 

 

 

 

 

 

 

Ending balance

 

 

 

 

 

 

 

 

Workers' compensation claims liabilities

 

$

326,233

 

 

$

265,143

 

Incurred but not reported (IBNR)

 

$

162,760

 

 

$

132,879