10. Share-Based Employee Compensation (Details 1) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Notes to Financial Statements
Outstanding Stock Options	680,912
Vested Stock Options	609,244
Nonvested Stock Options	71,668
Issued Stock Options	25,000
Exercised Stock Options	26,159
Forfeited Stock Options
Expired Stock Options	218,809
Outstanding Stock Options	460,944
Vested Stock Options	435,944
Nonvested Stock Options	25,000
Outstanding Wgt. Avg. Exercise Price	$ 3.56
Vested Wgt. Avg. Exercise Price	$ 3.60
Nonvested Wgt. Avg. Exercise Price	$ 2.03	$ 3.20
Issued Wgt. Avg. Exercise Price	$ 2.03
Exercised Wgt. Avg. Exercise Price	$ 1.12
Forfeited Wgt. Avg. Exercise Price
Expired Wgt. Avg. Exercise Price	$ 3.85
Outstanding Wgt. Avg. Exercise Price	$ 3.47
Vested Wgt. Avg. Exercise Price	$ 3.55
Outstanding Contractual Life	4 years 1 month 2 days
Vested Contractual Life	4 years 1 month
Nonvested Contractual Life	4 years 4 months 21 days
Outstanding Grant Date Fair Value	$ 2.29	$ 2.31
Vested Grant Date Fair Value	$ 2.38	$ 2.33
Nonvested Grant Date Fair Value		$ 2.14
Issued Grant Date Fair Value	$ 0.68
Exercised Grant Date Fair Value	$ 0.79
Forfeited Grant Date Fair Value	$ 0
Expired Grant Date Fair Value	$ 2.28
Nonvested Grant Date Fair Value	$ 0.68
Outstanding Aggregate Intrinsic Value	$ 4,500
Vested Aggregate Intrinsic Value	$ 4,500
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