Other Current Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2011

Other Current Accrued Liabilities [Abstract]

Summary of other current accrued liabilities

The following is a summary of the Company's other current accrued liabilities balances at December 31:

(Thousands of dollars)	2011		2010
Customer prepayments	$	10,659	$	11,999
Litigation reserves		2,743		6,493
Deferred compensation & benefit plans		6,884		6,548
Acquisition hold back & royalty consideration		2,219		2,132
Other accrued liabilities		3,689		3,376
Total other current accrued liabilities	$	26,194	$	30,548