CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) [Abstract]
Net earnings	$ 3,065	$ 1,689	$ 5,568	$ 1,131
Other comprehensive income:
Currency translation adjustment, net of taxes of $89, $5, $123 and ($216), respectively	368	231	537	(1,182)
Unrealized holding losses on marketable securities arising during the period, net of taxes of $48, ($63), $65 and ($11), respectively	78	(103)	106	(18)
Change in unfunded SERP liability, net of taxes of $14, $24, $28 and ($4), respectively	32	53	63	(8)
Other comprehensive income (loss)	478	181	706	(1,208)
Comprehensive income (loss)	$ 3,543	$ 1,870	$ 6,274	$ (77)