|
Stock-Based Compensation (Narrative) (Details) (USD $)
|
3 Months Ended | 12 Months Ended | 3 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|---|
|
Mar. 31, 2013
|
Mar. 31, 2012
|
Mar. 31, 2013
Employee Stock Purchase Plan [Member]
|
Mar. 31, 2013
2011 Executive Incentive Compensation Plan [Member]
|
Mar. 31, 2013
Stock Option Plan For Directors [Member]
|
Dec. 31, 2012
Stock Option Plan For Directors [Member]
|
Mar. 31, 2013
1992 Stock Plan [Member]
|
Mar. 31, 2013
Key Employees [Member]
2011 Executive Incentive Compensation Plan [Member]
|
Mar. 31, 2013
Key Executive Employees [Member]
2011 Executive Incentive Compensation Plan [Member]
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||||
| Percentage of price of common stock at which employees are able to acquire | 90.00% | ||||||||
| Shares available | 48,339 | 425,879 | 154,430 | ||||||
| Number of awards authorized | 1,000,000 | ||||||||
| Number of options granted | 0 | 0 | 0 | 160,302 | |||||
| Award expiration period | 10 years | 7 years | |||||||
| Award vesting percentage | 25.00% | ||||||||
| Awards granted | 190,108 | ||||||||
| Deferred stock awards granted | 11,576 | 0 | 177,532 | ||||||
| Minimum percentage of revenue growth required to earn deferred stock | 150.00% | ||||||||
| Aggregate intrinsic value of options outstanding | $ 65,000 | ||||||||
| Intrinsic value of all options exercised | 0 | ||||||||
| Net cash proceeds from exercise of stock options | 0 | 0 | |||||||
| Share based compensation expense before income taxes | 177,000 | 111,000 | |||||||
| Share based compensation expense after income taxes | 115,000 | 72,000 | |||||||
| Unrecognized compensation expense related to deferred stock shares | 1,396,000 | ||||||||
| Excess tax benefits from exercise of stock options | $ 0 | $ 0 | |||||||
| X | ||||||||||
|
- Definition
Percentage of vesting of share-based compensation awards. No definition available.
|
| X | ||||||||||
|
- Definition
Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
|
| X | ||||||||||
|
- Definition
Share based compensation arrangement by share based payment minimum percentage of revenue growth required to earn deferred stock . No definition available.
|
| X | ||||||||||
|
- Definition
Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. No definition available.
|
| X | ||||||||||
|
- Definition
Aggregate number of common shares reserved for future issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of shares issued pursuant to the terms of the deferred compensation plan as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate unrecognized cost of share-based awards, other than options, made to employees under an equity-based compensation plan, that have yet to vest. No definition available.
|
| X | ||||||||||
|
- Definition
Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The discount rate from market value on offering date that participants pay for shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of grants made 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). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Net number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|