CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS [Abstract]
Net (loss) earnings available to common stockholders	$ (100,696)	$ 5,320
Other comprehensive income (loss):
Currency translation adjustment, net of taxes of $0 in 2016 and ($160) in 2015	1,029	(10,335)
Unrealized holding gains on marketable securities arising during the period, net of taxes of $27 in 2016 and $33 and 2015	43	54
Change in unfunded SERP liability, net of taxes of $72 in 2016 and $28 in 2015	434	64
Other comprehensive income (loss)	1,506	(10,217)
Comprehensive loss	$ (99,190)	$ (4,897)