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Stock-Based Compensation (Narrative) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Options granted | 0 |  | 0 |  | 1,365,000 |  |
Options outstanding | 1,314,435 |  | 1,391,636 |  | 1,429,842 |  | 70,638
Total fair value of shares vested | $ 1,100,000 |  | $ 900,000 |  |  |  |
Closing stock price per share | $ 8.23 |  |  |  |  |  |
Options exercised | 64,701 | [1] | 38,206 | [2] | 3,296 | [3] |
Cash consideration from exercise of stock options | $ 97,000 |  | $ 89,000 |  | $ 3,000 |  |
Stock-based compensation expense | 800,000 |  | $ 1,600,000 |  | 1,000,000 |  |
Unrecognized compensation expense related to unvested stock options | $ 300,000 |  |  |  |  |  |
Expected period of recognition for unrecognized compensation cost | 1 year |  |  |  |  |  |
2005 Plan [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares authorized | 2,000,000 |  |  |  |  |  |
2005 Plan [Member] | One-Year [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period | 1 year |  |  |  |  |  |
2005 Plan [Member] | Three-Year [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period | 3 years |  |  |  |  |  |
2016 Plan [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares authorized | 3,500,000 |  |  |  |  |  |
Options granted | 0 |  |  |  |  |  |
Percentage of legal entity controlled by optionee | 100.00% |  |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Total fair value of shares vested |  |  |  |  | $ 100,000 |  |
Maximum [Member] | 2005 Plan [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Exercise period of options | 10 years |  |  |  |  |  |
Vesting period | 4 years |  |  |  |  |  |
Maximum [Member] | 2016 Plan [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Exercise period of options | 10 years |  |  |  |  |  |
Minimum [Member] | 2005 Plan [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period | 6 months |  |  |  |  |  |
Stock Compensation Plan [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Options exercised | 13,451 |  | 6,956 |  |  |  |
Cash consideration from exercise of stock options | $ 53,709 |  | $ 6,390 |  |  |  |
Intrinsic value of options exercised | $ 28,337 |  | $ 35,747 |  |  |  |
Net Share Settlement [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Options exercised | 51,250 |  | 31,250 |  | 3,296 |  |
Cash consideration from exercise of stock options | $ 0 |  | $ 0 |  | $ 3,000 |  |
Intrinsic value of options exercised | $ 0 |  | $ 0 |  | $ 19,000 |  |
Shares issued | 14,498 |  | 9,820 |  |  |  |
Director [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Options outstanding | 104,200 |  |  |  |  |  |
Weighted average exercise price per share of options outstanding | $ 6.03 |  |  |  |  |  |
Options exercised | 9,550 |  | 16,250 |  | 0 |  |
Cash consideration from exercise of stock options | $ 48,228 |  | $ 83,563 |  |  |  |
Intrinsic value of options exercised | $ 8,763 |  | $ 17,925 |  |  |  |
[1] | 13,451 options were exercised for cash considerations of $53,709 in 2016. The intrinsic value of the options exercised was $28,337. In addition, 51,250 options were exercised and 14,498 shares were issued through net share settlements in 2016. As a result, there was no cash consideration or intrinsic value for these options.
[2] | 6,956 options were exercised for cash considerations of $6,390 in 2015. The intrinsic value of the options exercised was $35,747. In addition, 31,250 options were exercised and 9,820 shares were issued through net share settlement in 2015, as a result there was no cash consideration or intrinsic value for the options.
[3] | 3,296 options were exercised for cash consideration of $3,000 in 2014. The intrinsic value of the options exercised was $19,000

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