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		(458,461)				(458,236)	(458,236)	(225)
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]		598
Shares repurchased for withholding taxes		(1,018)	(2)	(1,016)			(1,018)
Shares repurchased for withholding taxes, shares	[1]		(216)
Forfeitures, shares	[1]		(26)
Stock based compensation		6,061		5,965			5,965	96
Balance at Sep. 30, 2011		$ 58,262	$ 289	$ 1,640,591	$ 0	$ (1,579,578)	$ 61,302	$ (3,040)
Balance, shares at Sep. 30, 2011	[1]		28,870		0

[1] All common share amounts (except par value and par value per share amounts) have been retroactively restated 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.