CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) (USD $) In Thousands, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Common Stock Warrants [Member]	Accumulated Other Comprehensive Income [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2010	$ 113,437	$ 19	$ 220,125	$ 6,966	$ 50	$ (113,723)
Balance (in shares) at Dec. 31, 2010		19,021
Increase (Decrease) in Partners' Capital [Roll Forward]
Employee stock compensation plans, net	1,376	0	1,376	0	0	0
Employee stock compensation plans, net (in shares)		78
Issuance of common stock, net of issuance costs	39,444	4	39,440	0	0	0
Issuance of common stock, net of issuance costs (in shares)		3,751
Issuance of common stock in connection with the Omnifrio and Canada Exchange acquisitions	10,280	1	10,279	0	0	0
Issuance of common stock in connection with the Omnifrio and Canada Exchange acquisitions (in shares)		808
Issuance of warrant	41	0	0	41	0	0
Comprehensive income (loss)
Net loss	(14,379)	0	0	0	0	(14,379)
Other comprehensive income (loss)	(570)	0	0	0	(570)	0
Balance at Dec. 31, 2011	149,629	24	271,220	7,007	(520)	(128,102)
Balance (in shares) at Dec. 31, 2011		23,658
Increase (Decrease) in Partners' Capital [Roll Forward]
Employee stock compensation plans, net	1,290	0	1,290	0	0	0
Employee stock compensation plans, net (in shares)		114
Issuance of common stock, net of issuance costs	(174)	0	(174)	0	0	0
Issuance of common stock, net of issuance costs (in shares)		0
Warrant modification charges	1,413	0	0	1,413	0	0
Comprehensive income (loss)
Net loss	(111,029)	0	0	0	0	(111,029)
Other comprehensive income (loss)	484	0	0	0	484	0
Balance at Dec. 31, 2012	$ 41,613	$ 24	$ 272,336	$ 8,420	$ (36)	$ (239,131)
Balance (in shares) at Dec. 31, 2012		23,772