Consolidated Statements Of Stockholders' Equity - Jun. 30, 2015 - USD ($)	Total		Common Stock	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
BALANCE (in shares) at Dec. 31, 2014	18,926,242		18,926,242
BALANCE at Dec. 31, 2014	$ 97,378,000		$ 473,592,000	$ (996,293,000)	$ 620,389,000	$ (310,000)
Proceeds from exercise of stock options, net (in shares)	48,000		48,042
Proceeds from exercise of stock options, net	$ 2,498,000		$ 2,498,000
Adjustments related to tax withholding for share-based compensation (in shares)			(55,225)
Adjustments related to tax withholding for share-based compensation	(3,699,000)		$ (3,699,000)
Share-based payments expense (in shares)			152,657
Share-based payments expense	8,287,000		$ 4,710,000	3,577,000
Excess tax benefit on share-based compensation expense	$ 158,000		$ 158,000
Repurchases of common stock (in shares)	(901,732)
Repurchases of common stock	$ (62,731,000)			(62,731,000)
Net income (loss)	(10,017,000)				(10,017,000)
Dividends	(11,040,000)				(11,040,000)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	$ 3,327,000	[1],[2]				3,327,000	[3]
BALANCE (in shares) at Jun. 30, 2015	18,169,984		18,169,984
BALANCE at Jun. 30, 2015	$ 24,161,000		$ 477,259,000	(1,055,447,000)	599,332,000	3,017,000
Statement of Stockholders' Equity (Footnote) [Abstract]
Foreign currency translation adjustment, tax effect	0
BALANCE (in shares) at Mar. 31, 2015			18,498,978
BALANCE at Mar. 31, 2015	92,731,000		$ 473,225,000	(1,033,424,000)	650,386,000	2,544,000
Proceeds from exercise of stock options, net (in shares)			41,217
Proceeds from exercise of stock options, net	2,159,000		$ 2,159,000
Adjustments related to tax withholding for share-based compensation (in shares)			(2,425)
Adjustments related to tax withholding for share-based compensation	(173,000)		$ (173,000)
Share-based payments expense (in shares)			(83,249)
Share-based payments expense	$ 2,048,000		$ 2,048,000	0
Repurchases of common stock (in shares)	(284,537)
Repurchases of common stock	$ (22,023,000)			(22,023,000)
Net income (loss)	(45,616,000)				(45,616,000)
Dividends	(5,438,000)				(5,438,000)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	$ 473,000	[1],[2]				473,000	[3]
BALANCE (in shares) at Jun. 30, 2015	18,169,984		18,169,984
BALANCE at Jun. 30, 2015	$ 24,161,000		$ 477,259,000	$ (1,055,447,000)	$ 599,332,000	$ 3,017,000
Statement of Stockholders' Equity (Footnote) [Abstract]
Foreign currency translation adjustment, tax effect	$ 0

[1] Foreign currency translation adjustment had no tax effect for the six months ended June 30, 2015.

[2] Foreign currency translation adjustment had no tax effect for the three and six months ended June 30, 2015 and 2014, respectively.

[3] Foreign currency translation adjustment has no tax effect for the six months ended June 30, 2015.