CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net earnings	$ 15,908	[1]	$ 2,373	[1]	$ 3,764
Other comprehensive income (loss):
Currency translation adjustment, net of taxes of $77, $0 and $0	977		281		(236)
Reclassification adjustment for write-down/loss on sale of marketable securities included in net earnings, net of tax of $348	0		569		0
Reclassification adjustment for gain on sale of marketable securities included in net earnings, net of tax of ($37), $0 and ($45)	(61)		0		(74)
Unrealized holding gains (losses) on marketable securities arising during the period, net of taxes of $45, ($154) and ($310), respectively	87		(251)		(507)
Change in unfunded SERP liability, net of taxes of $457, ($210) and ($306), respectively	1,069		(476)		(694)
Other comprehensive income (loss)	2,072		123		(1,511)
Comprehensive income	$ 17,980		$ 2,496		$ 2,253

[1] Quarterly amounts of earnings per share may not agree to the total for the year due to rounding.