CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Loss) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Loss) (Unaudited) [Abstract]
Net earnings (loss)	$ 2,503	$ (558)
Other comprehensive income:
Currency translation adjustment, net of taxes of $34, ($221), respectively	169	(1,413)
Unrealized holding gains on marketable securities arising during the period, net of taxes of $17 and $52, respectively	28	85
Change in unfunded SERP liability, net of taxes of $14 and ($27), respectively	32	(61)
Other comprehensive income (loss)	229	(1,389)
Comprehensive income (loss)	$ 2,732	$ (1,947)