Consolidated Statement of Stockholders' Equity (audited) (USD $)	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings
Stockholders' Equity Balance Beginning of Year at Dec. 31, 2008	$ 21,850,000	$ 0	$ 423,000	$ 30,439,000	$ (9,012,000)
Preferred Stock Balance Beginning of Year at Dec. 31, 2008		0
Common Stock Balance Beginning of Year at Dec. 31, 2008			8,451,000
Net Income	6,759,000				6,759,000
Issuance of common stock from stock incentive plans, shares			181,000
Issuance of common stock from stock incentive plans, value	283,000		9,000	274,000
Issuance of common stock in public offering, shares			1,725,000
Issuance of common stock in public offering, value	26,507,000		86,000	26,421,000
Issuance of common stock from purchase of MDSI, shares			120,000
Issuance of common stock from purchase MDSI, values	1,907,000		6,000	1,901,000
Share based compensation expense	604,000			604,000
Tax benefit for share based payments	1,447,000			1,447,000
Stockholders' Equity Balance End of Year at Dec. 31, 2009	59,357,000	0	524,000	61,086,000	(2,253,000)
Preferred Stock Balance End of Year at Dec. 31, 2009		0
Common Stock Balance End of Year at Dec. 31, 2009			10,477,000
Net Income	8,520,000				8,520,000
Issuance of common stock from stock incentive plans, shares			99,000
Issuance of common stock from stock incentive plans, value	675,000		4,000	671,000
Issuance of common stock from purchase MDSI, values	0
Reduction of capitalizable expenses for public offering	56,000			56,000
Cancellation of restricted shares, shares			(10,000)
Cancellation of restricted shares, value	1,000			1,000
Share based compensation expense	1,394,000			1,394,000
Tax benefit for share based payments	160,000			160,000
Stockholders' Equity Balance End of Year at Dec. 31, 2010	70,163,000	0	528,000	63,368,000	6,267,000
Preferred Stock Balance End of Year at Dec. 31, 2010	0	0
Common Stock Balance End of Year at Dec. 31, 2010	10,566,000		10,566,000
Net Income	19,038,000				19,038,000
Issuance of common stock from stock incentive plans, shares			124,000
Issuance of common stock from stock incentive plans, value	827,000		6,000	821,000
Issuance of common stock from purchase MDSI, values	0
Share based compensation expense	1,262,000			1,262,000
Tax benefit for share based payments	152,000			152,000
Stockholders' Equity Balance End of Year at Dec. 31, 2011	$ 91,442,000	$ 0	$ 534,000	$ 65,603,000	$ 25,305,000
Preferred Stock Balance End of Year at Dec. 31, 2011	0	0
Common Stock Balance End of Year at Dec. 31, 2011	10,690,000		10,690,000