Employee Benefit Plans	12 Months Ended
Dec. 31, 2013
Employee Benefit Plans [Abstract]
Employee Benefit Plans	(12) Employee Benefit Plans The Company has a defined contribution retirement plan whereby eligible employees may contribute up to 60% of their gross pay subject to the IRS maximum ($17,500 for 2013). Employees age 50 or older may make additional contributions up to the IRS maximum ($23,000 for 2013). Under the plan, the Company’s current discretionary match is equal to 70% of eligible contributions made by each participant during the year, up to the first 8% of the participant’s current gross eligible earnings. In addition, upon acquiring Omniflight, the Company acquired a defined contribution retirement plan, which allowed employees to contribute up to 50% of their gross pay, subject to the same IRS maximums, and provided for discretionary matching Company benefits. The discretionary match in effect for Omniflight as of the acquisition date and continued by the Company through December 31, 2011, was 25% of eligible contributions up to 2% of the participant’s gross pay. Effective January 1, 2012, Omniflight employees became eligible to participate in the Company’s defined contribution retirement plan. Company contributions to all plans totaled approximately $10,793,000, $9,372,000, and $7,033,000, for the years ended December 31, 2013, 2012, and 2011, respectively.

The Company has a defined contribution retirement plan whereby eligible employees may contribute up to 60% of their gross pay subject to the IRS maximum ($17,500 for 2013). Employees age 50 or older may make additional contributions up to the IRS maximum ($23,000 for 2013). Under the plan, the Company’s current discretionary match is equal to 70% of eligible contributions made by each participant during the year, up to the first 8% of the participant’s current gross eligible earnings. In addition, upon acquiring Omniflight, the Company acquired a defined contribution retirement plan, which allowed employees to contribute up to 50% of their gross pay, subject to the same IRS maximums, and provided for discretionary matching Company benefits. The discretionary match in effect for Omniflight as of the acquisition date and continued by the Company through December 31, 2011, was 25% of eligible contributions up to 2% of the participant’s gross pay. Effective January 1, 2012, Omniflight employees became eligible to participate in the Company’s defined contribution retirement plan. Company contributions to all plans totaled approximately $10,793,000, $9,372,000, and $7,033,000, for the years ended December 31, 2013, 2012, and 2011, respectively.