Independent Directors' Stock Option
 6 Months Ended
Jun. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
INDEPENDENT DIRECTORS' STOCK OPTION PLAN
INDEPENDENT DIRECTORS’ STOCK OPTION PLAN
The Company has a stock option plan, the Independent Director’s Stock Option Plan (the “IDSOP”), which authorizes the grant of non-qualified stock options to the Company’s independent directors, subject to the discretion of the board of directors and the applicable limitations of the IDSOP. The term of the IDSOP is ten years, at which time any outstanding options will be forfeited. The exercise price for the options granted under the IDSOP was $9.15 per share for 2005 and 2006, and $9.10 per share for 2007, 2008 and 2009. The Company does not intend to continue to grant options under the IDSOP; however, the exercise price for any future options granted under the IDSOP will be at least 100% of the fair market value of the Company’s common stock as of the date the option is granted. As of June 30, 2013, the Company had granted options to purchase 50,000 shares under the IDSOP and options to purchase 45,000 shares at a weighted average exercise price of $9.12 per share remained outstanding with a weighted average contractual remaining life of four years. No shares were granted or exercised pursuant to the IDSOP for the three and six months ended June 30, 2013 and 2012. A total of 1,000,000 shares have been authorized and reserved for issuance under the IDSOP.
During the three and six months ended June 30, 2013 and 2012, the Company did not record any stock-based compensation charges, as all stock-based compensation charges related to unvested stock-based compensation awards granted under the IDSOP had previously been recognized. Stock-based compensation expense is based on awards ultimately expected to vest and reduced for estimated forfeitures. Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. The Company’s calculations assume no forfeitures.