CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) [Abstract]
Net earnings	$ 19,197	$ 8,603	$ 15,908
Other comprehensive (loss) income:
Currency translation adjustment, net of taxes of ($194), ($219) and $77	(9,954)	(11,255)	977
Reclassification adjustment for gain (loss) on sale of marketable securities included in net earnings, net of tax of $-, $- and ($37)	0	0	(61)
Unrealized holding (losses) gains on marketable securities arising during the period, net of taxes of $5, $90 and $45	5	147	87
Change in unfunded SERP liability, net of taxes of $2, ($631) and $457, respectively	21	(1,485)	1,069
Other comprehensive (loss) income	(9,928)	(12,593)	2,072
Comprehensive income (loss)	$ 9,269	$ (3,990)	$ 17,980