Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2014

Accrued Liabilities [Abstract]

Components of accrued liabilities

The components of accrued liabilities are summarized below (in thousands):

	March 31,		December 31,
	2014		2013
Accrued product warranty	$	1,227	$	1,048
Accrued compensation and related charges		1,210		1,762
Current portion of royalty payments		800		800
Dividends payable by consolidated joint ventures		729		649
Accrued professional services		279		543
Accrued income taxes		100		125
Other accrued liabilities		2,301		2,359
	$	6,646	$	7,286