CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS EQUITY (Unaudited) - 3 months ended Mar. 31, 2016 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock Shares [Member]	Non-Redeemable Preferred Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Treasury Stock-Common [Member]
Balance at Dec. 31, 2015	$ 421,580	$ 2,713	$ 3,000	$ 192,249	$ 248,150	$ (24,532)
Balance shares at Dec. 31, 2015		27,132
Net loss	(14,941)				(14,941)
Dividend accrued on redeemable preferred stock	(7,350)				(7,350)
Accretion of redeemable preferred stock	(2,243)				(2,243)
Stock-based compensation	1,103			1,103
Exercise of stock options	49	$ 1		48
Exercise of stock options, shares		6
Restricted stock granted from treasury stock				(2,971)		2,971
Excess income tax detriment associated with stock-based compensation	(51)			(51)
Balance at Mar. 31, 2016	$ 398,147	$ 2,714	$ 3,000	$ 190,378	$ 223,616	$ (21,561)
Balance shares at Mar. 31, 2016		27,138