Consolidated Statement of Changes in Equity (Unaudited) (USD $) In Thousands		Total	Common stock	Additional paid-in capital	Treasury stock	Accumulated deficit	Total Delta stockholders' equity	Non- controlling interest
Balance at Dec. 31, 2010		$ 511,595	$ 285	$ 1,635,783	$ (279)	$ (1,121,342)	$ 514,447	$ (2,852)
Balance, shares at Dec. 31, 2010	[1]		28,514		3
Net loss		(29,730)				(28,803)	(28,803)	(927)
Employee vesting of treasury stock held by subsidiary		85		(135)	279		144	(59)
Employee vesting of treasury stock held by subsidiary, shares	[1]				(3)
Issuance of vested stock			6	(6)
Issuance of vested stock, shares	[1]		591
Shares repurchased for withholding taxes		(7)		(7)			(7)
Shares repurchased for withholding taxes, shares	[1]		(1)
Forfeitures, shares	[1]		(9)
Stock based compensation		4,756		4,660			4,660	96
Balance at Jun. 30, 2011		$ 486,699	$ 291	$ 1,640,295	$ 0	$ (1,150,145)	$ 490,441	$ (3,742)
Balance, shares at Jun. 30, 2011	[1]		29,095		0

[1] All common share amounts (except par value and par value per share amounts) have been retroactively restated as of June 30, 2011 to reflect the Company's one-for-ten reverse common stock split effective July 13, 2011, as described in Note 10 -- Stockholders' Equity to these consolidated financial statements.