8. Non-Cash Share-Based Employee Compensation (Details) (USD $)	6 Months Ended
	Jun. 30, 2013
Notes to Financial Statements
Outstanding Stock Options, beginning	460,944
Vested Stock Options, beginning	435,944
Nonvested Stock Options, beginning	25,000
Issued Stock Options	80,000
Exercised Stock Options	55,000
Forfeited Stock Options
Expired Stock Options	5,000
Outstanding Stock Options, ending	480,944
Vested Stock Options, ending	419,275
Nonvested Stock Options, ending	61,669
Outstanding Wgt. Avg. Exercise Price, beginning	$ 3.47
Vested Wgt. Avg. Exercise Price, beginning	$ 3.55
Nonvested Wgt. Avg. Exercise Price, beginning	$ 2.03
Issued Wgt. Avg. Exercise Price	$ 2.61
Exercised Wgt. Avg. Exercise Price	$ 1.90
Forfeited Wgt. Avg. Exercise Price
Expired Wgt. Avg. Exercise Price	$ 4.50
Outstanding Wgt. Avg. Exercise Price, ending	$ 3.50
Vested Wgt. Avg. Exercise Price, ending	$ 3.61
Nonvested Wgt. Avg. Exercise Price, ending	$ 2.72
Outstanding Contractual Life	4 years 8 months 16 days
Vested Contractual Life	4 years 3 months 4 days
Nonvested Contractual Life	7 years 9 months
Outstanding Grant Date Fair Value, beginning	$ 2.29
Vested Grant Date Fair Value, beginning	$ 2.38
Nonvested Grant Date Fair Value, beginning	$ 0.68
Issued Grant Date Fair Value	$ 0.98
Exercised Grant Date Fair Value	$ 1.15
Forfeited Grant Date Fair Value
Expired Grant Date Fair Value	$ 2.68
Outstanding Grant Date Fair Value	$ 2.20
Vested Grant Date Fair Value	$ 2.39
Nonvested Grant Date Fair Value	$ 0.85
Outstanding Aggregate Intrinsic Value	$ 248,310
Vested Aggregate Intrinsic Value	$ 220,075
Nonvested Aggregate Intrinsic Value	$ 28,235