8. Non-Cash Share-Based Employee Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015
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	0
Exercised Stock Options	35,000
Forfeited Stock Options	0
Expired Stock Options	0
Outstanding Stock Options, ending	379,778
Vested Stock Options, ending	349,778
Nonvested Stock Options, ending	30,000
Outstanding Wgt. Avg. Exercise Price, beginning	$ 3.79
Vested Wgt. Avg. Exercise Price, beginning	$ 3.91
Nonvested Wgt. Avg. Exercise Price, beginning	$ 3RWC_Nonvested
Issued Wgt. Avg. Exercise Price
Exercised Wgt. Avg. Exercise Price	$ 2.73
Forfeited Wgt. Avg. Exercise Price
Expired Wgt. Avg. Exercise Price
Outstanding Wgt. Avg. Exercise Price, ending	$ 3.89
Vested Wgt. Avg. Exercise Price, ending	$ 3.93
Nonvested Wgt. Avg. Exercise Price, ending	$ 3.44RWC_Nonvested
Outstanding Contractual Life	3 years 7 months 6 days
Vested Contractual Life	3 years 6 months 18 days
Nonvested Contractual Life	4 years 1 month 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
Exercised Grant Date Fair Value	$ 1.06RWC_Exercised1
Forfeited Grant Date Fair Value
Expired Grant Date Fair Value
Outstanding Grant Date Fair Value	$ 2.4
Vested Grant Date Fair Value	$ 2.6
Nonvested Grant Date Fair Value	$ 0.08
Outstanding Aggregate Intrinsic Value	$ 1,012,895
Vested Aggregate Intrinsic Value	$ 933,095RWC_Vested1
Nonvested Aggregate Intrinsic Value	$ 79,800

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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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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 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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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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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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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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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 price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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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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Number of share options (or share units) exercised during the current period.

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