10. Non-Cash Share-Based Employee Compensation (Details) $ / shares in Units, $ in Thousands	6 Months Ended
Jun. 30, 2016 USD ($) $ / shares shares
Notes to Financial Statements
Outstanding Stock Options, beginning \| shares	291,936
Vested Stock Options, beginning \| shares	276,936
Nonvested Stock Options, beginning \| shares	15,000
Issued Stock Options \| shares	80,000
Exercised Stock Options \| shares	15,000
Forfeited Stock Options \| shares	0
Expired Stock Options \| shares	32,936
Outstanding Stock Options, ending \| shares	324,000
Vested Stock Options, ending \| shares	244,000
Nonvested Stock Options, ending \| shares	80,000
Outstanding Wgt. Avg. Exercise Price, beginning	$ 4.07
Vested Wgt. Avg. Exercise Price, beginning	4.00
Nonvested Wgt. Avg. Exercise Price, beginning	5.35
Issued Wgt. Avg. Exercise Price	4.01
Exercised Wgt. Avg. Exercise Price	2.08
Forfeited Wgt. Avg. Exercise Price	0
Expired Wgt. Avg. Exercise Price	11.40
Outstanding Wgt. Avg. Exercise Price, ending	3.40
Vested Wgt. Avg. Exercise Price, ending	3.20
Nonvested Wgt. Avg. Exercise Price, ending	$ 4.01
Outstanding Contractual Life	4 years 7 months 2 days
Vested Contractual Life	3 years 3 months 25 days
Nonvested Contractual Life	8 years 5 months 19 days
Outstanding Grant Date Fair Value, beginning	$ 2.68
Vested Grant Date Fair Value, beginning	2.72
Nonvested Grant Date Fair Value, beginning	1.93
Issued Grant Date Fair Value	2.08
Exercised Grant Date Fair Value	.87
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	1.92
Nonvested Grant Date Fair Value	$ 2.08
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 \| $	$ 552,620
Vested Aggregate Intrinsic Value \| $	$ 466,220
Nonvested Aggregate Intrinsic Value	$ 86,400

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Per share weighted average intrinsic value of equity-based compensation awards not vested. Excludes stock and unit options.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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The combined weighted average of the accumulated differences between the fair values on underlying shares and exercises prices to acquire such shares as of the grant date on options that were either forfeited or lapsed.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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Number of share instruments newly issued under a share-based compensation plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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