CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2010	$ 6	$ 259	$ 275,641	$ (266,458)	$ 9,448
Balance (in shares) at Dec. 31, 2010	592	25,960,080
Issuance of common stock	0	12	1,995	0	2,007
Issuance of common stock (in shares)	0	1,122,950
Exercise of options	0	0	16	0	16
Exercise of options (in shares)	0	34,420
Issuance of options	0	0	460	0	460
Compensation cost related to stock options	0	0	296	0	296
Net income (loss)	0	0	0	30,713	30,713
Balance at Dec. 31, 2011	6	271	278,408	(235,745)	42,940
Balance (in shares) at Dec. 31, 2011	592	27,117,450
Issuance of common stock	0	19	3,135	0	3,154
Issuance of common stock (in shares)	0	1,800,000
Exercise of options	0	0	14	0	14
Exercise of options (in shares)	0	27,778
Issuance of options	0	0	1,131	0	1,131
Compensation cost related to stock options	0	0	436	0	436
Net income (loss)	0	0	0	(1,031)	(1,031)
Balance at Sep. 30, 2012	$ 6	$ 290	$ 283,124	$ (236,176)	$ 46,644
Balance (in shares) at Sep. 30, 2012	592	28,945,228