11. Share-Based Employee Compensation (Details 1) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) $ / shares shares
Notes to Financial Statements
Outstanding Stock Options | shares	291,936
Vested Stock Options | shares	276,936
Nonvested Stock Options | shares	15,000
Issued Stock Options | shares	80,000
Exercised Stock Options | shares	28,000
Forfeited Stock Options | shares	0
Expired Stock Options | shares	32,936
Outstanding Stock Options | shares	311,000
Vested Stock Options | shares	231,000
Nonvested Stock Options | shares	80,000
Outstanding Wgt. Avg. Exercise Price	$ 4.07
Vested Wgt. Avg. Exercise Price	4
Nonvested Wgt. Avg. Exercise Price	5.35
Issued Wgt. Avg. Exercise Price	4.01
Exercised Wgt. Avg. Exercise Price	1.81
Forfeited Wgt. Avg. Exercise Price	0
Expired Wgt. Avg. Exercise Price	11.4
Outstanding Wgt. Avg. Exercise Price	3.48
Vested Wgt. Avg. Exercise Price	3.30
Nonvested Wgt. Avg. Exercise Price	$ 4.01
Outstanding Contractual Life	4 years 2 months 12 days
Vested Contractual Life	2 years 10 months 20 days
Nonvested Contractual Life	7 years 11 months 16 days
Outstanding Grant Date Fair Value	$ 2.68
Vested Grant Date Fair Value	2.72
Nonvested Grant Date Fair Value	1.93
Issued Grant Date Fair Value	1.93
Exercised Grant Date Fair Value	0.99
Forfeited Grant Date Fair Value	0
Expired Grant Date Fair Value	9.16
Outstanding Grant Date Fair Value	1.96
Vested Grant Date Fair Value	1.97
Nonvested Grant Date Fair Value	$ 1.93
Outstanding Aggregate Intrinsic Value | $	$ 0
Vested 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 | $	$ 403,610
Vested Aggregate Intrinsic Value | $	344,410
Nonvested aggregate intrinsic value | $	$ 59,200