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Stockholders' Equity (Narrative) (Details) - USD ($) |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
May 17, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Payments of Ordinary Dividends, Common Stock |  |  |  |  | $ 831,000 | $ 925,000
Unrecognized share based compensation, expected term (in Duration) |  |  |  |  | 1 year 9 months 18 days |
Directors compensation expense |  | $ 82,000 |  | $ 314,000 | $ 212,000 | $ 406,000
Common Stock, Dividends, Per Share, Declared |  | $ 0.025 |  | $ 0.025 | $ 0.050 | $ 0.050
Dividends, Common Stock, Cash |  | $ 400,000 |  |  |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased |  |  | 25,000,000 |  |  |
ESPP |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Shares purchased through Employee Stock Purchase Plan (in Shares) |  | 11,510 |  |  |  |
Weighted average purchase price of ESPP shares purchased during the period (in Dollars per share) |  | $ 19.92 |  |  |  |
Share-based compensation expense |  | $ 67,000 |  | $ 55,000 | $ 144,000 | $ 129,000
Restricted Stock |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based compensation expense |  | 300,000 |  | $ 400,000 | 600,000 | 800,000
Stock Granted, Value, Share-based Compensation, Net of Forfeitures |  |  | $ 300,000 |  |  |
Unrecognized share based compensation |  | $ 2,500,000 |  |  | $ 2,500,000 |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  | 16,900 |  |  |
Restricted Stock | Maximum [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  | 3 years |  |  |
Stock Options |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  |  |  |  | 20000.00% |
Share based compensation awards, options outstanding at period end (in Shares) |  | 1,864,754 |  |  | 1,864,754 |
Share based compensation awards, options outstanding and unvested at period end (in Shares) |  | 694,899 |  |  | 694,899 |
Share-based compensation expense |  | $ 600,000 |  |  | $ 1,100,000 | $ 1,200,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  | 5 years |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period |  |  | 10 years |  |  |
Stock Granted, Value, Share-based Compensation, Net of Forfeitures |  |  | $ 1,300,000 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  | 0 | 235,500 |  |  |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price |  |  | $ 20.06 |  |  |
Performance Shares [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  | 73,700 |  |  |
Share-Based Compensation Arrangement, By Share-Based Payment Award, Equity Instrument Other Than Options, Percent Represented By EBITDA |  |  | 25.00% |  |  |
Share-Based Compensation Aggrangement, By Share-Based Payment Award, Equity Instrument Other Than Options, Percent Represented By Relative Shareholder Return Performance |  |  | 75.00% |  |  |
Officers And Key Employees [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Directors compensation expense |  | $ 81,000 |  |  | $ 108,000 |
Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Granted In Period, Fair Value |  |  | $ 1,605,186 |  |  |
Audit Committee Chairman [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Director Compensation, Annual Cash Retainer | $ 10,000 |  |  |  |  |
Director Compensation, Quarterly Installment Of Annual Cash Retainer | 2,500 |  |  |  |  |
Corporate Governance Committee Chairman [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Director Compensation, Annual Cash Retainer | 5,000 |  |  |  |  |
Director Compensation, Quarterly Installment Of Annual Cash Retainer | 1,250 |  |  |  |  |
Compensation Committee Chairman [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Director Compensation, Annual Cash Retainer | 5,000 |  |  |  |  |
Director Compensation, Quarterly Installment Of Annual Cash Retainer | 1,250 |  |  |  |  |
Director [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Director Compensation, Annual Cash Retainer | 75,000 |  |  |  |  |
Director Compensation, Quarterly Installment Of Annual Cash Retainer | 18,750 |  |  |  |  |
New Director [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Director Compensation, Annual Cash Retainer | $ 25,000 |  |  |  |  |
Share-based Compensation Award, Tranche One [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  |  |  |  | 50.00% |
Share-based Compensation Award, Tranche Two [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  |  |  |  | 25.00% |

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