CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Unaudited) [Abstract]
Net earnings	$ 2,427	$ 1,441	$ 1,884	$ 2,313
Other comprehensive income (loss):
Currency translation adjustment, net of taxes of $5, $0, ($216) and $0, respectively	231	(749)	(1,182)	(334)
Reclassification adjustment for write-down of marketable securities included in net earnings, net of tax of $181	0	296	0	296
Unrealized holding losses on marketable securities arising during the period, net of taxes of ($63), ($72), ($11) and ($59), respectively	(103)	(117)	(18)	(91)
Change in unfunded SERP liability, net of taxes of $24, $18, ($4) and $35, respectively	53	40	(8)	80
Other comprehensive income (loss)	181	(530)	(1,208)	(49)
Comprehensive income	$ 2,608	$ 911	$ 676	$ 2,264