8. Non-Cash Share-Based Employee Compensation (Details) - 6 months ended Jun. 30, 2015 - USD ($) $ / shares in Units, $ in Thousands	Total
Notes to Financial Statements
Outstanding Stock Options, beginning	414,778
Vested Stock Options, beginning	361,443
Nonvested Stock Options, beginning	53,335
Issued Stock Options	25,000
Exercised Stock Options	87,002
Forfeited Stock Options	0
Expired Stock Options	0
Outstanding Stock Options, ending	352,776
Vested Stock Options, ending	327,776
Nonvested Stock Options, ending	25,000
Outstanding Wgt. Avg. Exercise Price, beginning	$ 3.79
Vested Wgt. Avg. Exercise Price, beginning	3.91
Nonvested Wgt. Avg. Exercise Price, beginning	3.00
Issued Wgt. Avg. Exercise Price	5.70
Exercised Wgt. Avg. Exercise Price	3.16
Forfeited Wgt. Avg. Exercise Price	0
Expired Wgt. Avg. Exercise Price	0
Outstanding Wgt. Avg. Exercise Price, ending	4.08
Vested Wgt. Avg. Exercise Price, ending	3.96
Nonvested Wgt. Avg. Exercise Price, ending	$ 5.70
Outstanding Contractual Life	3 years 7 months 6 days
Vested Contractual Life	3 years 6 months
Nonvested Contractual Life	4 years 10 months 20 days
Outstanding Grant Date Fair Value, beginning	$ 2.29
Vested Grant Date Fair Value, beginning	2.55
Nonvested Grant Date Fair Value, beginning	0.54
Issued Grant Date Fair Value	2.05
Exercised Grant Date Fair Value	1.31
Forfeited Grant Date Fair Value	0
Expired Grant Date Fair Value	0
Outstanding Grant Date Fair Value	2.51
Vested Grant Date Fair Value	2.55
Nonvested Grant Date Fair Value	$ 2.05
Outstanding Aggregate Intrinsic Value	$ 0
Vested Aggregate Intrinsic Value	$ 0
Nonvested Aggregate Intrinsic Value	$ 0
Issued Aggregate Intrinsic Value	$ 0
Exercised Aggregate Intrinsic Value	$ 0
Forfeited Aggregate Intrinsic Value	$ 0
Expired Aggregate Intrinsic Value	$ 0
Outstanding Aggregate Intrinsic Value	$ 530,461
Vested Aggregate Intrinsic Value	$ 530,461
Nonvested Aggregate Intrinsic Value	$ 0