CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	[1]	Sep. 30, 2015	Sep. 30, 2014	[1]
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) [Abstract]
Net earnings available to common stockholders	$ 4,920	$ 1,261		$ 16,302	$ 6,829
Other comprehensive income (loss):
Currency translation adjustment, net of taxes of $- in the three months ended September 30, 2015, ($180) in the three months ended September 30, 2014, ($194) in the nine months ended September 30, 2015 and ($57) in the nine months ended September 30, 2014	(1,439)	(6,785)		(8,240)	(6,248)
Unrealized holding gains on marketable securities arising during the period, net of taxes of ($54) in the three months ended September 30, 2015, ($7) in the three months ended September 30, 2014, ($39) in the nine months ended September 30, 2015 and $58 in the nine months ended September 30, 2014	(89)	(12)		(64)	95
Change in unfunded SERP liability, net of taxes of $28 in the three months ended September 30, 2015, $14 in the three months ended September 30, 2014, $84 in the nine months ended September 30, 2015 and $42 in the nine months ended September 30, 2014	63	32		191	95
Other comprehensive loss	(1,465)	(6,765)		(8,113)	(6,058)
Comprehensive income (loss)	$ 3,455	$ (5,504)		$ 8,189	$ 771

[1] (Revised)