Employee Benefit Plans	12 Months Ended
Dec. 31, 2012
Employee Benefit Plans [Abstract]
EMPLOYEE BENEFIT PLANS	(8) EMPLOYEE BENEFIT PLANS We maintain a defined contribution retirement plan in accordance with Section 401(k) of the Internal Revenue Code, which allows eligible participating employees to defer receipt of up to 50% of their annual compensation and contribute such amount to one or more investment funds. We match employee contributions in a discretionary amount to be determined by management and approved by the Board of Directors each plan year up to the lesser of 6% of an employee’s annual compensation or $3,000 per participant. We also may make additional discretionary contributions to the Plan as determined by management and approved by the Board of Directors each plan year. Company matching funds and discretionary contributions vest 100% after three years of service for participants who either had attained three or more years of service or were hired on or after January 1, 2012. For all other participants, company matching funds and discretionary contributions vest at the rate of 20% after two years of service and 100% after three years of service. We contributed approximately $1.1 million in 2012 and $1.0 million in 2010 to the Plan. We did not make a contribution in 2011 to the Plan.

Employee Benefit Plans

12 Months Ended

Dec. 31, 2012

(8) EMPLOYEE BENEFIT PLANS

We maintain a defined contribution retirement plan in accordance with Section 401(k) of the Internal Revenue Code, which allows eligible participating employees to defer receipt of up to 50% of their annual compensation and contribute such amount to one or more investment funds. We match employee contributions in a discretionary amount to be determined by management and approved by the Board of Directors each plan year up to the lesser of 6% of an employee’s annual compensation or $3,000 per participant. We also may make additional discretionary contributions to the Plan as determined by management and approved by the Board of Directors each plan year. Company matching funds and discretionary contributions vest 100% after three years of service for participants who either had attained three or more years of service or were hired on or after January 1, 2012. For all other participants, company matching funds and discretionary contributions vest at the rate of 20% after two years of service and 100% after three years of service. We contributed approximately $1.1 million in 2012 and $1.0 million in 2010 to the Plan. We did not make a contribution in 2011 to the Plan.