CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net earnings	$ 2,402	$ 3,764	$ 13,649
Other comprehensive income (loss):
Currency translation adjustment	281	(236)	(907)
Reclassification adjustment for write-down/loss on sale of marketable securities included in net earnings, net of tax of $348	569	0	0
Reclassification adjustment for gain on sale of marketable securities included in net earnings, net of tax	0	(74)	0
Unrealized holding (losses) gains on marketable securities arising during the period, net of taxes	(251)	(507)	457
Change in unfunded SERP liability, net of taxes	(476)	(694)	(681)
Other comprehensive income (loss)	123	(1,511)	(1,131)
Comprehensive income	$ 2,525	$ 2,253	$ 12,518