CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Thousands, except Share data	Potentially Redeemable Equity [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Total
Balance at Aug. 04, 2004	$ 0	$ 17	$ 146,125	$ (27,762)	$ 0	$ 118,380
Balance (in shares) at Aug. 04, 2004		34,550
Acquisition of CBI, August 5, 2004	0	2	23,451	0	0	23,453
Acquisition of CBI, August 5, 2004 (in shares)		3,248
Acquisition of AzERx, February 27, 2006	0	1	7,763	0	0	7,764
Acquisition of AzERx, February 27, 2006 (in shares)		1,355
Exercise of common stock options	0	0	4,579	0	0	4,579
Exercise of common stock options (in shares)		997
Stock-based compensation cost	0	0	3,346	0	0	3,346
Compensation earned on stock awards	0	0	1,200	0	0	1,200
Compensation earned on stock awards (in shares)		494
Sale of common stock	0	1	3,375	0	0	3,376
Sale of common stock (in shares)		1,263
Common stock purchased and retired	0	(1)	(1,040)	0	0	(1,041)
Common stock purchased and retired (in shares)		(1,132)
Recognized uncertain tax position	0	0	0	(363)	0	(363)
Reclassification of share-based awards liability	0	0	(541)	0	0	(541)
Recognition of potentially redeemable equity, net of amortization	15,556	0	0	(15,556)	0	(15,556)
Net loss	0	0	0	(136,681)	0	(136,681)
Balance at Dec. 31, 2010	15,556	20	188,258	(180,362)	0	7,916
Balance (in shares) at Dec. 31, 2010		40,775
Exercise of common stock options (in shares)						0
De-recognition of potentially redeemable equity, net of amortization	(15,556)	0	0	15,556	0	15,556
Stock-based compensation cost	0	0	159	0	0	159
Reclassification of share-based awards liability	0	0	657	0	0	657
Net loss	0	0	0	(9,711)	0	(9,711)
Balance at Dec. 31, 2011	0	20	189,074	(174,517)	0	14,577
Balance (in shares) at Dec. 31, 2011		40,775
Exercise of common stock options (in shares)						0
Stock-based compensation cost	0	0	107	0	0	107
Stock-based compensation cost (in shares)		110
Formation of Joint Venture	0	0	0	0	666	666
Net loss	0	0	0	(3,580)	(473)	(4,053)
Balance at Dec. 31, 2012	$ 0	$ 20	$ 189,181	$ (178,097)	$ 193	$ 11,297
Balance (in shares) at Dec. 31, 2012		40,885